About Antonio Pinheiro

Antonio Pinheiro received the B.E. degree in electrical engineering from the I.S.T. University of Lisbon, Portugal, in 1988, and the Ph.D. degree in Electronic Systems Engineering from University of Essex in 2002. Since 1988 he is a lecture at University da Beira Interior (UBI), Portugal. His current research interests are on image processing and computer vision domains, including Multimedia Quality, Multimedia Privacy, and also on Image Classification and Medical Image Analysis. He is the Communication chair and a Portuguese committee member of ISO/IEC JTC 1/SC 29/WG 1 (JPEG). He has been Portuguese representative of the European COST Actions 292 and IC1003 -€“ Qualinet, and currently he is Portuguese representative of IC1206, DE-ID - De-identification for privacy protection in multimedia content and BM1304, MYO-MRI - Applications of MR imaging and spectroscopy techniques in neuromuscular disease.

JPEG Column: 85th JPEG Meeting in San Jose, California, U.S.A.

The 85th JPEG meeting was held in San Jose, CA, USA.

The meeting was distinguished by the Prime Time Engineering Emmy Award from the Academy of Television Arts & Sciences (ATAS) for the longevity of the first JPEG standard. Furthermore, a very successful workshop on JPEG emerging technologies was held at Microsoft premises in Silicon Valley with a broad participation from several companies working in imaging technologies. This workshop ended with the celebration of two JPEG committee experts, Thomas Richter and Ogawa Shigetaka, recognized by ISO outstanding contribution awards for the key roles they played in the development of JPEG XT standard.

The 85th JPEG meeting continued laying the groundwork for the continuous development of JPEG standards and exploration studies. In particular, the developments on new image coding standard JPEG XL,  the low latency and complexity standard JPEG XS, and the release of the JPEG Systems interoperable 360 image standard, together with the exploration studies on image compression using machine learning and on the use of blockchain and distributed ledger technologies for media applications.

The 85th JPEG meeting had the following highlights:

  • Prime Time Engineering Emmy award,
  • JPEG Emerging Technologies Workshop,
  • JPEG XL progresses towards a final specification,
  • JPEG AI evaluates machine learning based coding solutions,
  • JPEG exploration on Media Blockchain,
  • JPEG Systems interoperable 360 image standards released,
  • JPEG XS announces significant improvements of Bayer image sensor data compression.
JPEG Emerging Technologies Workshop.

Prime Time Engineering Emmy

The JPEG committee is honored to be the recipient of a prestigious Prime Time Engineering Award in 2019 by the US Academy of Television Arts & Sciences at the 71st Engineering Emmy Awards ceremony on the 23rd of October 2019 in Los Angeles, CA, USA. The first JPEG standard is known as a popular format in digital photography, used by hundreds of millions of users everywhere, in a wide range of applications including the world wide web, social media, photographic apparatus and smart cameras. The first part of the standard was published in 1992 and has grown to seven parts, with the latest, defining the reference software, published in 2019. This is a unique example of longevity in the fast moving information technologies and the Emmy award acknowledges this longevity and continuing influence over nearly three decades.

This is a well-deserved recognition not only for the Joint Photographic Experts Group committee members who started this standard under the auspices of ITU, ISO, IEC but also to all experts in the JPEG committee who continued to extend and maintain it, hence guaranteeing such a longevity.

JPEG convenor Touradj Ebrahimi during the Emmy acceptance speech.

According to Prof. Touradj Ebrahimi, Convenor of JPEG standardization committee, the longevity of JPEG is based on three very important factors: “The credibility by being developed under the auspices of three important standardization bodies, namely ITU, ISO and IEC, development by explicitly taking into account end users, and the choice of being royalty free”. Furthermore,  “JPEG defined not only a great technology but also it was a committee that first defined how standardization should take place in order to become successful”.

JPEG Emerging Technologies Workshop

At the 85th JPEG meeting in San Jose, CA, USA, JPEG organized the “JPEG Emerging Technologies Workshop” on the 5th of November 2019 to inform industry and academia active in the wider field of multimedia and in particular in imaging, about current JPEG Committee standardization activities and exploration studies. Leading JPEG experts shared highlights about some of the emerging JPEG technologies that could shape the future of imaging and multimedia, with the following program:

  • Welcome and Introduction (Touradj Ebrahimi);
  • JPEG XS – Lightweight compression; Transparent quality. (Antonin Descampe);
  • JPEG Pleno (Peter Schelkens);
  • JPEG XL – Next-generation Image Compression (Jan Wassenberg and Jon Sneyers);
  • High-Throughput JPEG 2000 – Big improvement to JPEG 2000 (Pierre-Anthony Lemieux);
  • JPEG Systems – The framework for future and legacy standards (Andy Kuzma);
  • JPEG Privacy and Security and Exploration on Media Blockchain Standardization Needs (Frederik Temmermans);
  • JPEG AI: Learning to Compress (João Ascenso)

This very successful workshop ended with a panel moderated by Fernando Pereira where different relevant media technology issues were discussed with a vibrant participation of the attendees.

Proceedings of the JPEG Emerging Technologies Workshop are available for download via the following link: https://jpeg.org/items/20191108_jpeg_emerging_technologies_workshop_proceedings.html

JPEG XL

The JPEG XL Image Coding System (ISO/IEC 18181) continues its progression towards a final specification. The Committee Draft of JPEG XL is being refined based on feedback received from experts from ISO/IEC national bodies. Experiments indicate the main two JPEG XL modes compare favorably with specialized responsive and lossless modes, enabling a simpler specification.

The JPEG committee has approved open-sourcing the JPEG XL software. JPEG XL will advance to the Draft International Standard stage in 2020-01.

JPEG AI

JPEG AI carried out rigorous subjective and objective evaluations of a number of promising learning-based image coding solutions from state of the art, which show the potential of these codecs for different rate-quality tradeoffs, in comparison to widely used anchors. Moreover, a wide set of objective metrics were evaluated for several types of image coding solutions.

JPEG exploration on Media Blockchain

Fake news, copyright violations, media forensics, privacy and security are emerging challenges in digital media. JPEG has determined that blockchain and distributed ledger technologies (DLT) have great potential as a technology component to address these challenges in transparent and trustable media transactions. However, blockchain and DLT need to be integrated closely with a widely adopted standard to ensure broad interoperability of protected images. Therefore, the JPEG committee has organized several workshops to engage with the industry and help to identify use cases and requirements that will drive the standardization process. During the San Jose meeting, the committee drafted a first version of the use cases and requirements document. On the 21st of January 2020, during its 86th JPEG Meeting to be held in Sydney, Australia, JPEG plans to organize an interactive discussion session with stakeholders. Practical and registration information is available on the JPEG website. To keep informed and to get involved in this activity, interested parties are invited to register to the ad hoc group’s mailing list. (http://jpeg-blockchain-list.jpeg.org).

JPEG Systems interoperable 360 image standards released.

The ISO/IEC 19566-5 JUMBF and ISO/IEC 19566-6 JPEG 360 were published in July 2019.  These two standards work together to define basics for interoperability and lay the groundwork for future capabilities for richer interactions with still images as we add functionality to JUMBF (Part 5), Privacy & Security (Part 4), JPEG 360 (Part 6), and JLINK (Part 7). 

JPEG XS announces significant improvements of Bayer image sensor data compression.

JPEG XS aims at standardization of a visually lossless low-latency and lightweight compression that can be used as a mezzanine codec in various markets. Work has been done in the last meeting to enable JPEG XS for use in Bayer image sensor compression. Among the targeted use cases for Bayer image sensor compression, one can cite video transport over professional video links, real-time video storage in and outside of cameras, and data compression onboard of autonomous cars. The JPEG Committee also announces the final publication of JPEG XS Part-3 “Transport and Container Formats” as International Standard. This part enables storage of JPEG XS images in various formats. In addition, an effort is currently on its final way to specify RTP payload for JPEG XS, which will enable transport of JPEG XS in the SMPTE ST2110 framework.

“The 2019 Prime Time Engineering Award by the Academy is a well-deserved recognition for the Joint Photographic Experts Group members who initiated standardization of the first JPEG standard and to all experts of the JPEG committee who since then have extended and maintained it, guaranteeing its longevity. JPEG defined not only a great technology but also it was the first committee that defined how standardization should take place in order to become successful” said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JPEG, JPEG 2000, JPEG XR, JPSearch, JPEG XT and more recently, the JPEG XS, JPEG Systems, JPEG Pleno and JPEG XL families of imaging standards.

The JPEG Committee nominally meets four times a year, in different world locations. The 84th JPEG Meeting was held on 13-19 July 2019, in Brussels, Belgium. The next 86th JPEG Meeting will be held on 18-24 January 2020, in Sydney, Australia.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans (pr@jpeg.org) of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on http://jpeg-news-list.jpeg.org.  

Future JPEG meetings are planned as follows:

  • No 86, Sydney, Australia, January 18 to 24, 2020
  • No 87, Erlangen, Germany, April 25 to 30, 2020

JPEG Column: 84th JPEG Meeting in Brussels, Belgium

The 84th JPEG meeting was held in Brussels, Belgium.

This meeting was characterised by significant progress in most of JPEG projects and also exploratory studies. JPEG XL, the new image coding system, has issued the Committee Draft, giving shape to this new effective solution for the future of image coding. JPEG Pleno, the standard for new imaging technologies, Part 1 (Framework) and Part 2 (Light field coding) have also reached Draft International Standard status.

Moreover, exploration studies are ongoing in the domain of media blockchain and on the application of learning solutions for image coding (JPEG AI). Both have triggered a number of activities providing new knowledge and opening new possibilities on the future use of these technologies in future JPEG standards.

The 84th JPEG meeting had the following highlights: 84th meetingTE-66694113_10156591758739370_4025463063158194176_n

  • JPEG XL issues the Committee Draft
  • JPEG Pleno Part 1 and 2 reaches Draft International Standard status
  • JPEG AI defines Common Test Conditions
  • JPEG exploration studies on Media Blockchain
  • JPEG Systems –JLINK working draft
  • JPEG XS

In the following, a short description of the most significant activities is presented.

 

JPEG XL

The JPEG XL Image Coding System (ISO/IEC 18181) has completed the Committee Draft of the standard. The new coding technique allows storage of high-quality images at one-third the size of the legacy JPEG format. Moreover, JPEG XL can losslessly transcode existing JPEG images to about 80% of their original size simplifying interoperability and accelerating wider deployment.

The JPEG XL reference software, ready for mobile and desktop deployments, will be available in Q4 2019. The current contributors have committed to releasing it publicly under a royalty-free and open source license.

 

JPEG Pleno

A significant milestone has been reached during this meeting: the Draft International Standard (DIS) for both JPEG Pleno Part 1 (Framework) and Part 2 (Light field coding) have been completed. A draft architecture of the Reference Software (Part 4) and developments plans have been also discussed and defined.

In addition, JPEG has completed an in-depth analysis of existing point cloud coding solutions and a new version of the use-cases and requirements document has been released reflecting the future role of JPEG Pleno in point cloud compression. A new set of Common Test Conditions has been released as a guideline for the testing and evaluation of point cloud coding solutions with both a best practice subjective testing protocol and a set of objective metrics.

JPEG Pleno holography activities had significant advances on the definition of use cases and requirements, and description of Common Test Conditions. New quality assessment methodologies for holographic data defined in the framework of a collaboration between JPEG and Qualinet were established. Moreover, JPEG Pleno continues collecting microscopic and tomographic holographic data.

 

JPEG AI

The JPEG Committee continues to carry out exploration studies with deep learning-based image compression solutions, typically with an auto-encoder architecture. The promise that these types of codecs hold, especially in terms of coding efficiency, will be evaluated with several studies. In this meeting, a Common Test Conditions was produced, which includes a plan for subjective and objective quality assessment experiments as well as coding pipelines for anchor and learning-based codecs. Moreover, a JPEG AI dataset was proposed and discussed, and a double stimulus impairment scale experiment (side-by-side) was performed with a mix of experts and non-experts in a controlled environment.

 

JPEG exploration on Media Blockchain

Fake news, copyright violation, media forensics, privacy and security are emerging challenges in digital media. JPEG has determined that blockchain and distributed ledger technologies (DLT) have great potential as a technology component to address these challenges in transparent and trustable media transactions. However, blockchain and DLT need to be integrated closely with a widely adopted standard to ensure broad interoperability of protected images. JPEG calls for industry participation to help define use cases and requirements that will drive the standardization process. In order to clearly identify the impact of blockchain and distributed ledger technologies on JPEG standards, the committee has organised several workshops to interact with stakeholders in the domain.

The 4th public workshop on media blockchain was organized in Brussels on Tuesday the 16th of July 2019 during the 84th ISO/IEC JTC 1/SC 29/WG1 (JPEG) Meeting. The presentations and program of the workshop are available on jpeg.org.

The JPEG Committee has issued an updated version of the white paper entitled “Towards a Standardized Framework for Media Blockchain” that elaborates on the initiative, exploring relevant standardization activities, industrial needs and use cases.

To keep informed and to get involved in this activity, interested parties are invited to register to the ad hoc group’s mailing list.

 

JPEG Systems – JLINK

At the 84th meeting, IS text reviews for ISO/IEC 19566-5 JUMBF and ISO/IEC 19566-6 JPEG 360 were completed; IS publication will be forthcoming.  Work began on adding functionality to JUMBF, Privacy & Security, and JPEG 360; and initial planning towards developing software implementation of these parts of JPEG Systems specification.  Work also began on the new ISO/IEC 19566-7 Linked media images (JLINK) with development of a working draft.

 

JPEG XS

The JPEG Committee is pleased to announce new Core Experiments and Exploration Studies on compression of raw image sensor data. The JPEG XS project aims at the standardization of a visually lossless low-latency and lightweight compression scheme that can be used as a mezzanine codec in various markets. Video transport over professional video links (SDI, IP, Ethernet), real-time video storage in and outside of cameras, memory buffers, machine vision systems, and data compression onboard of autonomous vehicles are among the targeted use cases for raw image sensor compression. This new work on raw sensor data will pave the way towards highly efficient close-to-sensor image compression workflows with JPEG XS.

 

Final Quote

“Completion of the Committee Draft of JPEG XL, the new standard for image coding is an important milestone. It is hoped that JPEG XL can become an excellent replacement of the widely used JPEG format which has been in service for more than 25 years.” said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JPEG, JPEG 2000, JPEG XR, JPSearch, JPEG XT and more recently, the JPEG XS, JPEG Systems, JPEG Pleno and JPEG XL families of imaging standards.

More information about JPEG and its work is available at www.jpeg.org.

Future JPEG meetings are planned as follows:

  • No 85, San Jose, California, U.S.A., November 2 to 8, 2019
  • No 86, Sydney, Australia, January 18 to 24, 2020

JPEG Column: 83rd JPEG Meeting in Geneva, Switzerland

The 83rd JPEG meeting was held in Geneva, Switzerland.

The meeting was very dense due to the multiple activities taking place. Beyond the multiple standardization activities, like the new JPEG XL, JPEG Pleno, JPEG XS, HTJ2K or JPEG Systems, the 83rd JPEG meeting had the report and discussion of a new exploration study on the use of learning based methods applied to image coding, and two successful workshops, namely on digital holography applications and systems and the 3rd on media blockchain technology.

The new exploration study on the use of learning based methods applied to image coding was initiated at the previous 82nd JPEG meeting in Lisbon, Portugal. The initial approach provided very promising results and might establish a new alternative for future image representations.

The workshop on digital holography applications and systems, revealed the state of the art on industry applications and current technical solutions. It covered applications such as holographic microscopy, tomography, printing and display. Moreover, insights were provided on state-of-the-art holographic coding technologies and quality assessment procedures. The workshop allowed a very fruitful exchange of ideas between the different invited parties and JPEG experts.

The 3rd workshop of a series organized around media blockchain technology, had several talks were academia and industry shared their views on this emerging solution. The workshop ended with a panel where multiple questions were further elaborated by different panelists, providing the ground to a better understanding of the possible role of blockchain in media technology for the near future.

Two new logos for JPEG Pleno and JPEG XL, were approved and released during the Geneva meeting.

jpegpleno-logo  jpegxl-logo

The two new logos, for JPEG Pleno and JPEG XL

The 83rd JPEG meeting had the following highlights: 55540677_10156332786204370_7011318091044880384_n_h

  • New explorations studies of JPEG AI
  • The new Image Coding System JPEG XL
  • JPEG Pleno
  • JPEG XS
  • HTJ2K
  • JPEG Media Blockchain Technology
  • JPEG Systems – Privacy, Security & IPR, JPSearch and JPEG in HEIF

In the following a short summary of the most relevant achievements of the 83rd meeting in Geneva, Switzerland, are presented.

 

JPEG AI

The JPEG Committee is pleased to announce that it has started exploration studies on the use of learning-based solutions for its standards.

In the last few years, several efficient learning-based image coding solutions have been proposed, mainly with improved neural network models. These advances exploit the availability of large image datasets and special hardware, such as the highly parallelizable graphic processing units (GPUs). Recognizing that this area has received many contributions recently and it is considered critical for the future of a rich multimedia ecosystem, JPEG has created the JPEG AI AhG group to study promising learning-based image codecs with a precise and well-defined quality evaluation methodology.

In this meeting, a taxonomy was proposed and available solutions from the literature were organized into different dimensions. Besides, a list of promising learning-based image compression implementations and potential datasets to be used in the future were gathered.

JPEG XL

The JPEG Committee continues to develop the JPEG XL Image Coding System, a standard for image coding that offers substantially better compression efficiency than relevant alternative image formats, along with features desirable for web distribution and efficient compression of high quality images.

Software for the JPEG XL verification model has been implemented. A series of experiments showed promising results for lossy, lossless and progressive coding. In particular, photos can be stored with significant savings in size compared to equivalent-quality JPEG files. Additionally, existing JPEG files can also be considerably reduced in size (for faster download) while retaining the ability to later reproduce the exact JPEG file. Moreover, lossless storage of images is possible with major savings in size compared to PNG. Further refinements to the software and experiments (including enhancement of existing JPEG files, and animations) will follow.

JPEG Pleno

The JPEG Committee has three activities in JPEG Pleno: Light Field, Point Cloud, and Holographic image coding. A generic box-based syntax has been defined that allows for signaling of these modalities, independently or composing a plenoptic scene represented by different modalities. The JPEG Pleno system also includes a reference grid system that supports the positioning of the respective modalities. The generic file format and reference grid system are defined in Part 1 of the standard, which is currently under development. Part 2 of the standard covers light field coding and supports two encoding mechanisms. The launch of specifications for point cloud and holographic content is under study by the JPEG committee.

JPEG XS

The JPEG committee is pleased to announce the creation of an Amendment to JPEG XS Core Coding System defining the use of the codec for raw image sensor data. The JPEG XS project aims at the standardization of a visually lossless low-latency and lightweight compression scheme that can be used as a mezzanine codec in various markets. Among the targeted use cases for raw image sensor compression, one can cite video transport over professional video links (SDI, IP, Ethernet), real-time video storage in and outside of cameras, memory buffers, machine vision systems, and data compression onboard of autonomous cars. One of the most important benefit of the JPEG XS codec is an end-to-end latency ranging from less than one line to a few lines of the image.

HTJ2K

The JPEG committee is pleased to announce a significant milestone, with ISO/IEC 15444-15 High-Throughput JPEG 2000 (HTJ2K) submitted to ISO for immediate publication as International Standard. HTJ2K opens the door to higher encoding and decoding throughput for applications where JPEG 2000 is used today.

The HTJ2K algorithm has demonstrated an average tenfold increase in encoding and decoding throughput compared to the algorithm currently defined by JPEG 2000 Part 1. This increase in throughput results in an average coding efficiency loss of 10% or less in comparison to the most efficient modes of the block coding algorithm in JPEG 2000 Part 1 and enables mathematically lossless transcoding to and from JPEG 2000 Part 1 codestreams.

JPEG Media Blockchain Technology

In order to clearly identify the impact of blockchain and distributed ledger technologies on JPEG standards, the committee has organized several workshops to interact with stakeholders in the domain. The programs and proceedings of these workshop are accessible on the JPEG website:

  1. 1st JPEG Workshop on Media Blockchain Proceedings, ISO/IEC JTC1/SC29/WG1, Vancouver, Canada, October 16th, 2018
  2. 2nd JPEG Workshop on Media Blockchain Proceedings, ISO/IEC JTC1/SC29/WG1, Lisbon, Portugal, January 22nd, 2019
  3. 3rd JPEG Workshop on Media Blockchain Proceedings, ISO/IEC JTC1/SC29/WG1, Geneva, Switzerland, March 20th, 2019

A 4th workshop is planned during the 84th JPEG meeting to be held in Brussels, Belgium on July 16th, 2019. The JPEG Committee invites experts to participate to this upcoming workshop.

JPEG Systems – Privacy, Security & IPR, JPSearch, and JPEG-in-HEIF.

At the 83rd meeting, JPEG Systems realized significant progress towards improving users’ privacy with the DIS text completion of ISO/IEC 19566-4 “Privacy, Security, and IPR Features” which will be released for ballot. JPEG Systems continued to progress on image search and retrieval with the FDIS text release of JPSearch ISO/IEC 24800 Part 2- 2nd edition. Finally, support for JPEG 2000, JPEG XR, and JPEG XS images encapsulated in ISO/IEC 15444-12 are progressing towards IS stage; this enables these JPEG images to be encapsulated in ISO base media file formats, such as ISO/IEC 23008-12 High efficiency file format (HEIF).

Final Quote

“Intelligent codecs might redesign the future of media compression. JPEG can accelerate this trend by producing the first AI based image coding standard.” said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JPEG, JPEG 2000, JPEG XR, JPSearch, JPEG XT and more recently, the JPEG XS, JPEG Systems, JPEG Pleno and JPEG XL families of imaging standards.

The JPEG Committee nominally meets four times a year, in different world locations. The 82nd JPEG Meeting was held on 19-25 January 2018, in Lisbon, Portugal. The next 84th JPEG Meeting will be held on 13-19 July 2019, in Brussels, Belgium.

More information about JPEG and its work is available at jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list.

Future JPEG meetings are planned as follows:

  • No 84, Brussels, Belgium, July 13 to 19, 2019
  • No 85, San Jose, California, U.S.A., November 2 to 8, 2019
  • No 86, Sydney, Australia, January 18 to 24, 2020

JPEG Column: 82nd JPEG Meeting in Lisbon, Portugal

The 82nd JPEG meeting was held in Lisbon, Portugal. Highlights of the meeting are progress on JPEG XL, JPEG XS, HTJ2K, JPEG Pleno, JPEG Systems and JPEG reference software.

JPEG has been the most common representation format of digital images for more than 25 years. Other image representation formats have been standardised by JPEG committee like JPEG 2000 or more recently JPEG XS. Furthermore, JPEG has been extended with new functionalities like HDR or alpha plane coding with the JPEG XT standard, and more recently with a reference software. Another solutions have been also proposed by different players with limited success. The JPEG committee decided it is the time to create a new working item, named JPEG XL, that aims to develop an image coding standard with increased quality and flexibility combined with a better compression efficiency. The evaluation of the call for proposals responses had already confirmed the industry interest, and development of core experiments has now begun. Several functionalities will be considered, like support for lossless transcoding of images represented with JPEG standard.

A 2nd workshop on media blockchain technologies was held in Lisbon, collocated with the JPEG meeting. Touradj Ebrahimi and Frederik Temmermans opened the workshop with presentations on relevant JPEG activities such as JPEG Privacy and Security. Thereafter, Zekeriya Erkin made a presentation on blockchain, distributed trust and privacy, and Carlos Serrão presented an overview of the ISO/TC 307 standardization work on blockchain and distributed ledger technologies. The workshop concluded with a panel discussion chaired by Fernando Pereira where the interoperability of blockchain and media technologies was discussed. A 3rd workshop is planned during the 83rd meeting to be held in Geneva, Switzerland on March 20th, 2019.

The 82nd JPEG meeting had the following highlights: jpeg82ndpicS

  • The new working item JPEG XL
  • JPEG Pleno
  • JPEG XS
  • HTJ2K
  • JPEG Systems – JUMBF & JPEG 360
  • JPEG reference software

 

The following summarizes various highlights during JPEG’s Lisbon meeting. As always, JPEG welcomes participation from industry and academia in all its standards activities.

JPEG XL

The JPEG Committee launched JPEG XL with the aim of developing a standard for image coding that offers substantially better compression efficiency when compared to existing image formats, along with features desirable for web distribution and efficient compression of high quality images. Subjective tests conducted by two independent research laboratories were presented at the 82nd meeting in Lisbon and indicate promising results that compare favorably with state of the art codecs.

A development software for the JPEG XL verification model is currently being implemented. A series of experiments have been also defined for improving the above model; these experiments address new functionalities such as lossless coding and progressive decoding.

JPEG Pleno

The JPEG Committee has three activities in JPEG Pleno: Light Field, Point Cloud, and Holographic image coding.

At the Lisbon meeting, Part 2 of JPEG Pleno Light Field was refined and a Committee Draft (CD) text was prepared. A new round of core experiments targets improved subaperture image prediction quality and scalability functionality.

JPEG Pleno Holography will be hosting a workshop on March 19th, 2019 during the 83rd JPEG meeting in Geneva. The purpose of this workshop is to provide insights in the status of holographic applications such as holographic microscopy and tomography, displays and printing, and to assess their impact on the planned standardization specification. This workshop invites participation from both industry and academia experts. Information on the workshop can be find at https://jpeg.org/items/20190228_pleno_holography_workshop_geneva_announcement.html

JPEG XS

The JPEG Committee is pleased to announce a new milestone of the JPEG XS project, with the Profiles and Buffer Models (JPEG XS ISO/IEC 21122 Part 2) submitted to ISO for immediate publication as International Standard.

This project aims at standardization of a visually lossless low-latency and lightweight compression scheme that can be used as a mezzanine codec within any AV market. Among the targeted use cases are video transport over professional video links (SDI, IP, Ethernet), real-time video storage, memory buffers, omnidirectional video capture and rendering, and sensor compression (for example in cameras and in the automotive industry). The Core Coding System allows for visually lossless quality at moderate compression rates, scalable end-to-end latency ranging from less than a line to a few lines of the image, and low complexity real time implementations in ASIC, FPGA, CPU and GPU. The new part “Profiles and Buffer Models” defines different coding tools subsets addressing specific application fields and use cases. For more information, interested parties are invited to read the JPEG White paper on JPEG XS that has been recently published on the JPEG website (https://jpeg.org).

 HTJ2K

The JPEG Committee continues its work on ISO/IEC 15444-15 High-Throughput JPEG 2000 (HTJ2K) with the development of conformance codestreams and reference software, improving interoperability and reducing obstacles to implementation.

The HTJ2K block coding algorithm has demonstrated an average tenfold increase in encoding and decoding throughput compared to the block coding algorithm currently defined by JPEG 2000 Part 1. This increase in throughput results in an average coding efficiency loss of 10% or less in comparison to the most efficient modes of the block coding algorithm in JPEG 2000 Part 1, and enables mathematically lossless transcoding to-and-from JPEG 2000 Part 1 codestreams.

JPEG Systems – JUMBF & JPEG 360

At the 82nd JPEG meeting, the Committee DIS ballots were completed, comments reviewed, and the standard progressed towards FDIS text for upcoming ballots on “JPEG Universal Metadata Box Format (JUMBF)” as ISO/IEC 19566-5, and “JPEG 360” as ISO/IEC 19566-6. Investigations continued to generalize the framework to other applications relying on JPEG (ISO/IEC 10918 | ITU-T.81), and JPEG Pleno Light Field.

JPEG reference software

With the JPEG Reference Software reaching FDIS stage, the JPEG Committee reaches an important milestone by extending its specifications with a new part containing a reference software. With its FDIS release, two implementations will become official reference to the most successful standard of the JPEG Committee: The fast and widely deployed libjpeg-turbo code, along with a complete implementation of JPEG coming from the Committee itself that also covers coding modes that were only known by a few experts.

 

Final Quote

“One of the strengths of the JPEG Committee has been in its ability to identify important trends in imaging technologies and their impact on products and services. I am delighted to see that this effort still continues and the Committee remains attentive to future.” said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.

The JPEG Committee nominally meets four times a year, in different world locations. The 82nd JPEG Meeting was held on 19-25 October 2018, in Lisbon, Portugal. The next 83rd JPEG Meeting will be held on 16-22 March 2019, in Geneva, Switzerland.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans (pr@jpeg.org) of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on http://jpeg-news-list.jpeg.org.  

Future JPEG meetings are planned as follows:

  • No 83, Geneva, Switzerland, March 16 to 22, 2019
  • No 84, Brussels, Belgium, July 13 to 19, 2019

 

JPEG Column: 81st JPEG Meeting in Vancouver, Canada

The 81st JPEG meeting was held in Vancouver, British Columbia, Canada, at which significant efforts were put into the analysis of the responses to the call for proposals on the next generation image coding standard, nicknamed JPEG XL, that is expected to provide a solution for image format with improved quality and flexibility, allied with a better compression efficiency. The responses to the call confirms the interest of different parties on this activity. Moreover, the initial  subjective and objective evaluation of the different proposals confirm a significative evolution on both quality and compression efficiency that will be provided by the future standard.

Apart the multiple activities related with several standards development, a workshop on Blockchain technologies was held at Telus facilities in Vancouver, with several talks on Blockchain and Distributed Ledger Technologies, and a Panel where the influence of these technologies on multimedia was analysed and discussed. A new workshop is planned at the 82nd JPEG meeting to be held in Lisbon, Portugal, in January 2019.

The 81st JPEG meeting had the following highlights:JPEG81VancouverCut

  • JPEG Completes Initial Assessment on Responses for the Next Generation Image Coding Standard (JPEG XL);
  • Workshop on Blockchain technology;
  • JPEG XS Core Coding System submitted to ISO for immediate publication as International Standard;
  • HTJ2K achieves Draft International Status;
  • JPEG Pleno defines a generic file format syntax architecture.

The following summarizes various highlights during JPEG’s Vancouver meeting.

JPEG XL completes the initial assessment of responses to the call for proposals

 The JPEG Committee launched the Next Generation Image Coding activity, also referred to as JPEG XL, with the aim of developing a standard for image coding that offers substantially better compression efficiency than existing image formats, along with features desirable for web distribution and efficient compression of high quality images. A Call for Proposals on Next Generation Image Coding was issued at the 79th JPEG meeting.

Seven submissions were received in response to the Call for Proposals. The submissions, along with the anchors, were evaluated in subjective tests by three independent research labs. At the 81st JPEG meeting in Vancouver, Canada, the proposals were evaluated using subjective and objective evaluation metrics, and a verification model (XLM) was agreed upon. Following this selection process, a series of experiments have been designed in order to compare the performance of the current XLM with alternative choices as coding components including those technologies submitted by some of the top performing submissions; these experiments are commonly referred to as core experiments and will serve to further refine and improve the XLM towards the final standard. 

Workshop on Blockchain technology

On October 16th, 2018, JPEG organized its first workshop on Media Blockchain in Vancouver. Touradj Ebrahimi JPEG Convenor and Frederik Temmermans a leading JPEG expert, presented on the background of the JPEG standardization committee and ongoing JPEG activities such as JPEG Privacy and Security. Thereafter, Eric Paquet, Victoria Lemieux and Stephen Swift shared their experiences related to blockchain technology focusing on standardization challenges and formalization, real world adoption in media use cases and the state of the art related to consensus models. The workshop closed with an interactive discussion between the speakers and the audience, moderated by JPEG Requirements Chair Fernando Pereira.

The presentations from the workshop are available for download on the JPEG website. In January 2019, during the 82nd JPEG meeting in Lisbon, Portugal, a 2nd workshop will be organized to continue the discussion and interact with European stakeholders. More information about the program and registration will be made available on jpeg.org.

In addition to the workshop, JPEG issued an updated version of its white paper “JPEG White paper: Towards a Standardized Framework for Media Blockchain and Distributed Ledger Technologies” that elaborates on the blockchain initiative, exploring relevant standardization activities, industrial needs and use cases. The white paper will be further extended in the future with more elaborated use cases and conclusions drawn from the workshops. To keep informed and get involved in the discussion, interested parties are invited to register to the ad hoc group’s mailing list via http://jpeg-blockchain-list.jpeg.org.

WorkshopBlockChainCut

Touradj Ebrahimi, convenor of JPEG, giving the introductory talk in the Workshop on Blockchain technology.


JPEG XS

The JPEG committee is pleased to announce a significant milestone of the JPEG XS project, with the Core Coding System (aka JPEG XS Part-1) submitted to ISO for immediate publication as International Standard. This project aims at the standardization of a near-lossless low-latency and lightweight compression scheme that can be used as a mezzanine codec within any AV market. Among the targeted use cases are video transport over professional video links (SDI, IP, Ethernet), real-time video storage, memory buffers, omnidirectional video capture and rendering, and sensor compression (for example in cameras and in the automotive industry). The Core Coding System allows for visual transparent quality at moderate compression rates, scalable end-to-end latency ranging from less than a line to a few lines of the image, and low complexity real time implementations in ASIC, FPGA, CPU and GPU. Beside the Core Coding System, Profiles and levels (addressing specific application fields and use cases), together with the transport and container formats (defining different means to store and transport JPEG XS codestreams in files, over IP networks or SDI infrastructures) are also being finalized and their expected submission for publication as International Standard is Q1 2019.

HTJ2K

The JPEG Committee has reached a major milestone in the development of an alternative block coding algorithm for the JPEG 2000 family of standards, with ISO/IEC 15444-15 High Throughput JPEG 2000 (HTJ2K) achieving Draft International Status (DIS).

The HTJ2K algorithm has demonstrated an average tenfold increase in encoding and decoding throughput compared to the algorithm currently defined by JPEG 2000 Part 1. This increase in throughput results in an average coding efficiency loss of 10% or less in comparison to the most efficient modes of the block coding algorithm in JPEG 2000 Part 1, and enables mathematically lossless transcoding to and from JPEG 2000 Part 1 codestreams.

The JPEG Committee has begun the development of HTJ2K conformance codestreams and reference software.

JPEG Pleno

The JPEG Committee is currently pursuing three activities in the framework of the JPEG Pleno Standardization: Light Field, Point Cloud and Holographic content coding.

At the Vancouver meeting, a generic file format syntax architecture was outlined that allows for efficient exchange of these modalities by utilizing a box-based file format. This format will enable the carriage of light field, point cloud and holography data, including associated metadata for colour space specification, camera calibration etc. In the particular case of light field data, this will encompass both texture and disparity information.

For coding of point clouds and holographic data, activities are still in exploratory phase addressing the elaboration of use cases and the refinement of requirements for coding such modalities. In addition, experimental procedures are being designed to facilitate the quality evaluation and testing of technologies that will be submitted in later calls for coding technologies. Interested parties active in point cloud and holography related markets and applications, both from industry and academia are welcome to participate in this standardization activity.

Final Quote

“JPEG XL standard will enable a higher quality content while improving on compression efficiency and offering new features useful for emerging multimedia applications. said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.  

The JPEG Committee nominally meets four times a year, in different world locations. The 81st JPEG Meeting was held on 12-19 October 2018, in Vancouver, Canada. The next 82nd JPEG Meeting will be held on 19-25 January 2019, in Lisbon, Portugal.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans (pr@jpeg.org) of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on http://jpeg-news-list.jpeg.org.  

Future JPEG meetings are planned as follows:

  • No 82, Lisbon, Portugal, January 19 to 25, 2019
  • No 83, Geneva, Switzerland, March 16 to 22, 2019
  • No 84, Brussels, Belgium, July 13 to 19, 2019

 

JPEG Column: 80th JPEG Meeting in Berlin, Germany

The 80th JPEG meeting was held in Berlin, Germany, from 7 to 13 July 2018. During this meeting, JPEG issued a record number of ballots and output documents, spread through the multiple activities taking place. These record numbers are very revealing of the level of commitment of JPEG standardisation committee. A strong effort is being accomplished on the standardisation of new solutions for the emerging image technologies enabling the interoperability of different systems on the growing market of multimedia. Moreover, it is intended that these new initiatives should provide royalty-free patent licensing solutions at least in one of the available profiles, which shall promote a wider adoption of these future JPEG standards from the consumer market, and applications and systems developers.

A significant progress in low latency and high throughput standardisation initiatives has taken place at Berlin meetings. The new part 15 of JPEG 2000, known as High Throughput JPEG 2000 (HTJ2K), is finally ready and reached committee draft status. Furthermore, JPEG XS profiles and levels were released for their second and final ballot. Hence, these new low complexity standards foresee to be finalised in a short time, providing new solutions for developers and consumers on applications where mobility is important and large bandwidth is available. Virtual and augmented reality, as well as 360º images and video, are among the several applications that might benefit from these new standards.

Berlin80T1cut

JPEG meeting plenary in Berlin.

The 80th JPEG meeting had the following highlights:

  • HTJ2K reaches Committee Draft status;
  • JPEG XS profiles and levels are under ballot;
  • JPEG XL publishes additional information to the CfP;
  • JPEG Systems – JUMBF & JPEG 360;
  • JPEG-in-HEIF;
  • JPEG Blockchain white paper;
  • JPEG Pleno Light Field verification model.

The following summarizes the various highlights during JPEG’s Berlin meeting.

HTJ2K

The JPEG committee is pleased to announce a significant milestone, with ISO/IEC 15444-15 High-Throughput JPEG 2000 (HTJ2K) reaching Committee Draft status.

HTJ2K introduces a new FAST block coder to the JPEG 2000 family. The FAST block coder can be used in place of the JPEG 2000 Part 1 arithmetic block coder, and, as illustrated in Table 1, offers in average an order of magnitude increase on decoding and encoding throughput – at the expense of slightly reduced coding efficiency and elimination of quality scalability.

Table 1. Comparison between FAST block coder and JPEG 2000 Part 1 arithmetic block coder. Results were generated by optimized implementations evaluated as part of the HTJ2K activity, using professional video test images in the transcoding context specified in the Call for Proposal available at https://jpeg.org.  Figures are relative to JPEG2000 Part1 arithmetic block coder (bpp – bits per pixel).

JPEG 2000 Part 1 Block Coder Bitrate 0.5 bpp 1 bpp 2 bpp 4 bpp 6 bpp lossless
Average FAST Block Coder Speedup Factor 17.5x 19.5x 21.1x 25.5x 27.4x 43.7x
Average FAST Block Decoder Speedup Factor 10.2x 11.4x 11.9x 14.1x 15.1x 24.0x
Average Increase in Codestream Size  8.4%  7.3%   7.1% 6.6%  6.5%  6.6% 

Apart from the block coding algorithm itself, the FAST block coding algorithm does not modify the JPEG 2000 codestream, and allows mathematically lossless transcoding to and from JPEG 2000 codestreams. As a result the FAST block coding algorithm can be readily integrated into existing JPEG 2000 applications, where it can bring significant increases in processing efficiency. 

 

JPEG XS

This project aims at the standardization of a visually lossless low-latency and lightweight compression scheme that can be used as a mezzanine codec for the broadcast industry, Pro-AV and other markets. Targeted use cases are video transport over professional video links (SDI, IP, Ethernet), real-time video storage, memory buffers, omnidirectional video capture and rendering, and sensor compression (in particular in the automotive industry). The Core Coding System, expected to be published in Q4 2018 allows for visually lossless quality at 6:1 compression ratio for most content, 32 lines end-to-end latency, and ultra low complexity implementations in ASIC, FPGA, CPU and GPU. Following the 80th JPEG meeting in Berlin, profiles and levels (addressing specific application fields and use cases) are now under final ballot (expected publication in Q1 2019). Different means to store and transport JPEG XS codestreams in files, over IP networks or SDI infrastructures are also defined and go to a first ballot.

 

JPEG XL

The JPEG Committee issued a Call for Proposals (CfP) following its 79th meeting (April 2018), with the objective of seeking technologies that fulfill the objectives and scope of the Next-Generation Image Coding activity. The CfP, with all related info, can be found in https://jpeg.org/downloads/jpegxl/jpegxl-cfp.pdf. The deadline for expression of interest and registration was August 15, 2018, and submissions to the CfP were due on September 1, 2018. 

As outcome of the 80th JPEG meeting in Berlin, a document was produced containing additional information related to the objective and subjective quality assessment methodologies that will be used to evaluate the anchors and proposals to the CfP, available on https://jpeg.org/downloads/jpegxl/wg1n80024-additional-information-cfp.pdf. Moreover, a detailed workflow is described, together with the software and command lines used to generate the anchors and to compute objective quality metrics.

To stay posted on the action plan of JPEG XL, please regularly consult our website at jpeg.org and/or subscribe to its e-mail reflector.

 

JPEG Systems – JUMBF & JPEG 360

The JPEG Committee progressed towards a common framework and definition for metadata which will improve the ability to share 360 images. At the 80th meeting, the Committee Draft ballot was completed, the comments reviewed, and is now progressing towards DIS text for upcoming ballots on “JPEG Universal Metadata Box Format (JUMBF)” as ISO/IEC 19566-5, and “JPEG 360” as ISO/IEC 19566-6. Investigations have started to apply the framework on the structure of JPEG Pleno files.

 

JPEG-in-HEIF

The JPEG Committee made significant progress towards standardizing how JPEG XR, JPEG 2000 and the upcoming JPEG XS will be carried in ISO/IEC 23008-12 image file container.

 

JPEG Blockchain

Fake news, copyright violation, media forensics, privacy and security are emerging challenges for digital media. JPEG has determined that blockchain technology has great potential as a technology component to address these challenges in transparent and trustable media transactions. However, blockchain needs to be integrated closely with a widely adopted standard to ensure broad interoperability of protected images. JPEG calls for industry participation to help define use cases and requirements that will drive the standardization process. To reach this objective, JPEG issued a white paper entitled “Towards a Standardized Framework for Media Blockchain” that elaborates on the initiative, exploring relevant standardization activities, industrial needs and use cases. In addition, JPEG plans to organise a workshop during its 81st meeting in Vancouver on Tuesday 16th October 2018. More information about the workshop is available on https://www.jpeg.org. To keep informed and get involved, interested parties are invited to register on the ad hoc group’s mailing list at http://jpeg-blockchain-list.jpeg.org.

 

JPEG Pleno

The JPEG Committee is currently pursuing three activities in the framework of the JPEG Pleno Standardization: Light Field, Point Cloud and Holographic content coding.

At its Berlin meeting, a first version of the verification model software for light field coding has been produced. This software supports the core functionality that was indented for the light field coding standard. It serves for intensive testing of the standard. JPEG Pleno Light Field Coding supports various sensors ranging from lenslet cameras to high-density camera arrays, light field related content production chains up to light field displays.

For coding of point clouds and holographic data, activities are still in exploratory phase addressing the elaboration of use cases and the refinement of requirements for coding such modalities. In addition, experimental procedures are being designed to facilitate the quality evaluation and testing of technologies that will be submitted in later calls for coding technologies. Interested parties active in point cloud and holography related markets and applications, both from industry and academia are welcome to participate in this standardization activity.

 

Final Quote 

“After a record number of ballots and output documents generated during its 80th meeting, the JPEG Committee pursues its activity on the specification of effective and reliable solutions for image coding offering needed features in emerging multimedia applications. The new JPEG XS and JPEG 2000 part 15 provide low complexity compression solutions that will benefit many growing markets such as content production, virtual and augmented reality as well as autonomous cars and drones.” said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

 

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JBIG, JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.

The JPEG Committee nominally meets four times a year, in different world locations. The 80th JPEG Meeting was held on 7-13 July 2018, in Berlin, Germany. The next 81st JPEG Meeting will be held on 13-19 October 2018, in Vancouver, Canada.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans (pr@jpeg.org) of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on http://jpeg-news-list.jpeg.org.  

 

Future JPEG meetings are planned as follows:JPEG-signature

  • No 81, Vancouver, Canada, October 13 to 19, 2018
  • No 82, Lisbon, Portugal, January 19 to 25, 2019
  • No 83, Geneva, Switzerland, March 16 to 22, 2019

JPEG Column: 79th JPEG Meeting in La Jolla, California, U.S.A.

The JPEG Committee had its 79th meeting in La Jolla, California, U.S.A., from 9 to 15 April 2018.

During this meeting, JPEG had a final celebration of the 25th anniversary of its first JPEG standard, usually known as JPEG-1. This celebration coincides with two interesting facts. The first was the approval of a reference software for JPEG-1, “only” after 25 years. At the time of approval of the first JPEG standard a reference software was not considered, as it is common in recent image standards. However, the JPEG committee decided that was still important to provide a reference software, as current applications and standards can largely benefit on this specification. The second coincidence was the launch of a call for proposals for a next generation image coding standard, JPEG XL. This standard will define a new representation format for Photographic information, that includes the current technological developments, and can become an alternative to the 25 years old JPEG standard.

An informative two-hour JPEG Technologies Workshop marked the 25th anniversary celebration on Friday April 13, 2018. The workshop had presentations of several committee members on the current and future JPEG committee activity, with the following program:

IMG_4560

Touradj Ebrahimi, convenor of JPEG, presenting an overview of JPEG technologies.

  • Overview of JPEG activities, by Touradj Ebrahimi
  • JPEG XS by Antonin Descampe and Thomas Richter
  • HTJ2K by Pierre-Anthony Lemieux
  • JPEG Pleno – Light Field, Point Cloud, Holography by Ioan Tabus, Antonio Pinheiro, Peter Schelkens
  • JPEG Systems – Privacy and Security, 360 by Siegfried Foessel, Frederik Temmermans, Andy Kuzma
  • JPEG XL by Fernando Pereira, Jan De Cock

After the workshop, a social event was organized where a past JPEG committee Convenor, Eric Hamilton was recognized for key contributions to the JPEG standardization.

La Jolla JPEG meetings comprise mainly the following highlights:

  • Call for proposals of a next generation image coding standard, JPEG XL
  • JPEG XS profiles and levels definition
  • JPEG Systems defines a 360 degree format
  • HTJ2K
  • JPEG Pleno
  • JPEG XT
  • Approval of the JPEG Reference Software

The following summarizes various activities during JPEG’s La Jolla meeting.

JPEG XL

Billions of images are captured, stored and shared on a daily basis demonstrating the self-evident need for efficient image compression. Applications, websites and user interfaces are increasingly relying on images to share experiences, stories, visual information and appealing designs.

User interfaces can target devices with stringent constraints on network connection and/or power consumption in bandwidth constrained environments. Even though network capacities are improving globally, bandwidth is constrained to levels that inhibit application responsiveness in many situations. User interfaces that utilize images containing larger resolutions, higher dynamic ranges, wider color gamuts and higher bit depths, further contribute to larger volumes of data in higher bandwidth environments.

The JPEG Committee has launched a Next Generation Image Coding activity, referred to as JPEG XL. This activity aims to develop a standard for image coding that offers substantially better compression efficiency than existing image formats (e.g. more than 60% improvement when compared to the widely used legacy JPEG format), along with features desirable for web distribution and efficient compression of high-quality images.

To this end, the JPEG Committee has issued a Call for Proposals following its 79th meeting in April 2018, with the objective of seeking technologies that fulfill the objectives and scope of a Next Generation Image Coding. The Call for Proposals (CfP), with all related info, can be found at jpeg.org. The deadline for expression of interest and registration is August 15, 2018, and submissions to the Call are due September 1, 2018. To stay posted on the action plan for JPEG XL, please regularly consult our website at jpeg.org and/or subscribe to our e-mail reflector.

 

JPEG XS

This project aims at the standardization of a visually lossless low-latency lightweight compression scheme that can be used as a mezzanine codec for the broadcast industry, Pro-AV and other markets such as VR/AR/MR applications and autonomous cars. Among important use cases identified one can mention in particular video transport over professional video links (SDI, IP, Ethernet), real-time video storage, memory buffers, omnidirectional video capture and rendering, and sensor compression in the automotive industry. During the La Jolla meeting, profiles and levels have been defined to help implementers accurately size their design for their specific use cases. Transport of JPEG XS over IP networks or SDI infrastructures, are also being specified and will be finalized during the next JPEG meeting in Berlin (July 9-13, 2018). The JPEG committee therefore invites interested parties, in particular coding experts, codec providers, system integrators and potential users of the foreseen solutions, to contribute to the specification process. Publication of the core coding system as an International Standard is expected in Q4 2018.

 

JPEG Systems – JPEG 360

The JPEG Committee continues to make progress towards its goals to define a common framework and definitions for metadata which will improve the ability to share 360 images and provide the basis to enable new user interaction with images.  At the 79th JPEG meeting in La Jolla, the JPEG committee received responses to a call for proposals it issued for JPEG 360 metadata. As a result, JPEG Systems is readying a committee draft of “JPEG Universal Metadata Box Format (JUMBF)” as ISO/IEC 19566-5, and “JPEG 360” as ISO/IEC 19566-6.  The box structure defined by JUMBF allows JPEG 360 to define a flexible metadata schema and the ability to link JPEG code streams embedded in the file. It also allows keeping unstitched image elements for omnidirectional captures together with the main image and descriptive metadata in a single file.  Furthermore, JUMBF lays the groundwork for a uniform approach to integrate tools satisfying the emerging requirements for privacy and security metadata.

To stay posted on JPEG 360, please regularly consult our website at jpeg.org and/or subscribe to the JPEG 360 e-mail reflector. 

 

HTJ2K

High Throughput JPEG 2000 (HTJ2K) aims to develop an alternate block-coding algorithm that can be used in place of the existing block coding algorithm specified in ISO/IEC 15444-1 (JPEG 2000 Part 1). The objective is to significantly increase the throughput of JPEG 2000, at the expense of a small reduction in coding efficiency, while allowing mathematically lossless transcoding to and from codestreams using the existing block coding algorithm.

As a result of a Call for Proposals issued at its 76th meeting, the JPEG Committee has selected a block-coding algorithm as the basis for Part 15 of the JPEG 2000 suite of standards, known as High Throughput JPEG 2000 (HTJ2K). The algorithm has demonstrated an average tenfold increase in encoding and decoding throughput, compared to the algorithms based on JPEG 2000 Part 1. This increase in throughput results in less than 15% average loss in coding efficiency, and allows mathematically lossless transcoding to and from JPEG 2000 Part 1 codestreams.

A Working Draft of Part 15 to the JPEG 2000 suite of standards is now under development.

 

JPEG Pleno

The JPEG Committee is currently pursuing three activities in the framework of the JPEG Pleno Standardization: Light Field, Point Cloud and Holographic content coding.

JPEG Pleno Light Field finished a third round of core experiments for assessing the impact of individual coding modules and started work on creating software for a verification model. Moreover, additional test data has been studied and approved for use in future core experiments. Working Draft documents for JPEG Pleno specifications Part 1 and Part 2 were updated. A JPEG Pleno Light Field AhG was established with mandates to create a common test conditions document; perform exploration studies on new datasets, quality metrics, and random-access performance indicators; and to update the working draft documents for Part 1 and Part 2.

Furthermore, use cases were studied and are under consideration for JPEG Pleno Point Cloud. A current draft list is under discussion for the next period and will be updated and mapped to the JPEG Pleno requirements. A final document on use cases and requirements for JPEG Pleno Point Cloud is expected at the next meeting.

JPEG Pleno Holography has reviewed the draft of a holography overview document. Moreover, the current databases were classified according to use cases, and plans to analyze numerical reconstruction tools were established.

 

JPEG XT

The JPEG Committee released two corrigenda to JPEG XT Part 1 (core coding system) and JPEG XT Part 8 (lossless extension JPEG-1). These corrigenda clarify the upsampling procedure for chroma-subsampled images by adopting the centered upsampling in use by JFIF.

 

JPEG Reference Software

The JPEG Committee is pleased to announce that the CD ballot for Reference Software has been issued for the original JPEG-1 standard. This initiative closes a long-standing gap in the legacy JPEG standard by providing two reference implementations for this widely used and popular image coding format.

Final Quote

The JPEG Committee is hopeful to see its recently launched Next Generation Image Coding, JPEG XL, can result in a format that will become as important for imaging products and services as its predecessor was; the widely used and popular legacy JPEG format which has been in service for a quarter of century. said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JBIG, JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.

The JPEG Committee nominally meets four times a year, in different world locations. The 79th JPEG Meeting was held on 9-15 April 2018, in La Jolla, California, USA. The next 80th JPEG Meeting will be held on 7-13, July 2018, in Berlin, Germany.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans (pr@jpeg.org) of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on http://jpeg-news-list.jpeg.org.  

 

Future JPEG meetings are planned as follows:JPEG-signature

  • No 80, Berlin, Germany, July 7 to13, 2018
  • No 81, Vancouver, Canada, October 13 to 19, 2018
  • No 82, Lisbon, Portugal, January 19 to 25, 2019

JPEG Column: 78th JPEG Meeting in Rio de Janeiro, Brazil

The JPEG Committee had its 78th meeting in Rio de Janeiro, Brazil. Relevant to its ongoing standardization efforts in JPEG Privacy and Security, JPEG organized a special session to explore how to support blockchain and distributed ledger technologies to past, ongoing and future JPEG family of standards. This is motivated by the fact that considering the potential impact of such technologies in the future of multimedia, standardization will be required to enable interoperability between different systems and services of imaging relying on blockchain and distributed ledger technologies.

Blockchain and distributed ledger technologies are behind the well-known crypto-currencies. These technologies can provide means for content authorship, or intellectual property and rights management control of the multimedia information. New possibilities can be made available, namely support for tracking online use of copyrighted images and ownership of the digital content.

IMG_3596_half

JPEG meeting session.

Rio de Janeiro JPEG meetings comprise mainly the following highlights:

  • JPEG explores blockchain and distributed ledger technologies
  • JPEG 360 Metadata
  • JPEG XL
  • JPEG XS
  • JPEG Pleno
  • JPEG Reference Software
  • JPEG 25th anniversary of the first JPEG standard

The following summarizes various activities during JPEG’s Rio de Janeiro meeting.

JPEG explores blockchain and distributed ledger technologies

During the 78th JPEG meeting in Rio de Janeiro, the JPEG committee organized a special session on blockchain and distributed ledger technologies and their impact on JPEG standards. As a result, the committee decided to explore use cases and standardization needs related to blockchain technology in a multimedia context. Use cases will be explored in relation to the recently launched JPEG Privacy and Security, as well as in the broader landscape of imaging and multimedia applications. To that end, the committee created an ad hoc group with the aim to gather input from experts to define these use cases and to explore eventual needs and advantages to support a standardization effort focused on imaging and multimedia applications. To get involved in the discussion, interested parties can register to the ad hoc group’s mailing list. Instructions to join the list are available on http://jpeg-blockchain-list.jpeg.org

JPEG 360 Metadata

The JPEG Committee notes the increasing use of multi-sensor images from multi-sensor devices, such as 360 degree capturing cameras or dual-camera smartphones available to consumers. Images from these cameras are shown on computers, smartphones, and Head Mounted Displays (HMDs). JPEG standards are commonly used for image compression and file format. However, because existing JPEG standards do not fully cover these new uses, incompatibilities have reduced the interoperability of their images, and thus reducing the widespread ubiquity, which consumers have come to expect when using JPEG files. Additionally, new modalities for interacting with images, such as computer-based augmentation, face-tagging, and object classification, require support for metadata that was not part of the original scope of JPEG.  A set of such JPEG 360 use cases is described in JPEG 360 Metadata Use Cases document. 

To avoid fragmentation in the market and to ensure wide interoperability, a standard way of interacting with multi-sensor images with richer metadata is desired in JPEG standards. JPEG invites all interested parties, including manufacturers, vendors and users of such devices to submit technology proposals for enabling interactions with multi-sensor images and metadata that fulfill the scope, objectives and requirements that are outlined in the final Call for Proposals, available on the JPEG website.

To stay posted on JPEG 360, please regularly consult our website at jpeg.org and/or subscribe to the JPEG 360 e-mail reflector.

JPEG XL

The Next-Generation Image Compression activity (JPEG XL) has produced a revised draft Call for Proposals, and intends to publish a final Call for Proposals (CfP) following its 79th meeting (April 2018), with the objective of seeking technologies that fulfill the objectives and scope of the Next-Generation Image Compression. During the 78th meeting, objective and subjective quality assessment methodologies for anchor and proposal evaluations were discussed and analyzed. As outcome of the meeting, source code for objective quality assessment has been made available.

The draft Call for Proposals, with all related info, can be found in JPEG website. Comments are welcome and should be submitted as specified in the document. To stay posted on the action plan for JPEG XL, please regularly consult our website at jpeg.org and/or subscribe to our e-mail reflector.

 

JPEG XS

Since its previous 77th meeting, subjective quality evaluations have shown that the initial quality requirement of the JPEG XS Core Coding System has been met, i.e. a visually lossless quality at a compression ratio of 6:1 for large majority of images under test has been met. Several profiles are now under development in JPEG XS, as well as transport and container formats. JPEG committee therefore invites interested parties – in particular coding experts, codec providers, system integrators and potential users of the foreseen solutions – to contribute to the furthering of the specifications in the above directions. Publication of the International Standard is expected for Q3 2018.

JPEG Pleno

JPEG Pleno activity is currently divided into Pleno Light Field, Pleno Point Cloud and Pleno Holography. JPEG Pleno Light Field has been preparing a third round of core experiments for assessing the impact of individual coding modules on the overall rate-distortion performance. Moreover, it was decided to pursue with collecting additional test data, and progress with the preparation of working documents for JPEG Pleno specifications Part 1 and Part 2.

Furthermore, quality modelling studies are under consideration for both JPEG Pleno Point Clouds, and JPEG Pleno Holography. In particular, JPEG Pleno Point Cloud is considering a set of new quality metrics provided as contributions to this work item. It is expected that the new metrics replace the current state of the art as they have shown superior correlation with subjective quality as perceived by humans. Moreover, new subjective assessment models have been tested and analysed to better understand the perception of quality for such new types of visual information.

JPEG Reference Software

The JPEG committee is pleased to announce that its first JPEG image coding specifications is now augmented by a new part, ISO/IEC 10918-7, that contains a reference software. The proposed candidate software implementations have been checked for compliance with 10918-2. Considering the positive results, this new part of the JPEG standard will continue to evolve quickly. 

RioJanView27332626_10155421780114370_2546088045026774482_n

JPEG meeting room window view during a break.

JPEG 25th anniversary of the first JPEG standard

JPEG’s first standard third and final 25th anniversary celebration is planned at its next 79th JPEG meeting taking place in La Jolla, CA, USA. The anniversary will be marked by a 2 hours workshop on Friday 13th April on current and emerging JPEG technologies, followed by a social event where past JPEG committee members with relevant contributions will be awarded.

Final Quote

“Blockchain and distributed ledger technologies promise a significant impact on the future of many fields. JPEG is committed to provide standard mechanisms to apply blockchain on multimedia applications in general and on imaging in particular. said Prof. Touradj Ebrahimi, the Convenor of the JPEG Committee.

 

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JBIG, JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.

The JPEG Committee meets nominally four times a year, in different world locations. The latest 77th meeting was held from 21st to 27th of October 2017, in Macau, China. The next 79th JPEG Meeting will be held on 9-15 April 2018, in La Jolla, California, USA.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro or Frederik Temmermans (pr@jpeg.org) of the JPEG Communication Subgroup.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on http://jpeg-news-list.jpeg.org.  

Future JPEG meetings are planned as follows:

  • No 79, La Jolla (San Diego), CA, USA, April 9 to 15, 2018
  • No 80, Berlin, Germany, July 7 to13, 2018
  • No 81, Vancouver, Canada, October 13 to 19, 2018

 

 

JPEG Column: 77th JPEG Meeting in Macau, China

JPEG XS is now entering the final phases of the standard definition and soon will be available. It is important to clarify the change on the typical JPEG approach, as this is the first JPEG image compression standard that is not developed only targeting the best compression performance for the best perceptual quality. Instead, JPEG XS establishes a compromise between compression efficiency and low complexity. This new approach is also complemented with the development of a new part for the well-established JPEG 2000, named High Throughput JPEG 2000.

With these initiatives, JPEG committee is standardizing low complexity and low latency codecs, with a slight sacrifice of the compression performance usually seek in previous standards. This change of paradigm is justified considering the current trends on multimedia technology with the continuous grow on devices that are usually highly dependent of battery life cycles, namely mobiles, tablets, and also augmented reality devices or autonomous robots. Furthermore this standard provides support for applications like Omnidirectional video capture or real time video storage and streaming applications. Nowadays, networks tend to grow in available bandwidth. The memory available in most devices has also been reaching impressive numbers. Although compression is still required to simplify the large amount of data manipulation, its performance might become secondary if kept into acceptable levels. As it is obvious, considering the advances in coding technology of the last 25 years, these new approaches define codecs with compression performances largely above the JPEG standard used in most devices today. Moreover, they provide enhanced capabilities like HDR support, lossless or near lossless modes, or alpha plane coding.

On the 77th JPEG meeting held in Macau, China, from 21st to 27th of October several activities have been considered, as shortly described in the following.

IMG_3037r025

  1. A call for proposals on JPEG 360 Metadata for the current JPEG family of standards has been issued.
  2. New advances on low complexity/low latency compression standards, namely JPEG XS and High Throughput JPEG 2000.
  3. Continuation of JPEG Pleno project that will lead to a family of standards on different 3D technologies, like light fields, digital holography and also point clouds data.
  4. New CfP for the Next-Generation Image Compression Standard.
  5. Definition of a JPEG reference software.

Moreover, a celebration of the 25th JPEG anniversary where early JPEG committee members from Asia have been awarded has taken place.

The different activities are described in the following paragraphs.

 

JPEG Privacy and Security

JPEG Privacy & Security is a work item (ISO/IEC 19566-4) aiming at developing a standard that provides technical solutions, which can ensure privacy, maintaining data integrity and protecting intellectual property rights (IPR). A Call for Proposals was published in April 2017 and based on descriptive analysis of submitted solutions for supporting protection and authenticity features in JPEG files, a working draft of JPEG Privacy & Security in the context of JPEG Systems standardization was produced during the 77th JPEG meeting in Macau, China. To collect further comments from the stakeholders in this filed, an open online meeting for JPEG Privacy & Security will be conducted before the 78th JPEG meeting in Rio de Janeiro, Brazil, on Jan. 27-Feb 2, 2018. JPEG Committee invites interested parties to the meeting. Details will be announced in the JPEG Privacy & Security AhG email reflector.

 

JPEG 360 Metadata

The JPEG Committee has issued a “Draft Call for Proposals (CfP) on JPEG 360 Metadata” at the 77th JPEG meeting in Macau, China. The JPEG Committee notes the increasing use of multi-sensor images from multiple image sensor devices, such as 360 degree capturing cameras or dual-camera smartphones available to consumers. Images from these cameras are shown on computers, smartphones and Head Mounted Displays (HMDs). JPEG standards are commonly used for image compression and file format to store and share such content. However, because existing JPEG standards do not fully cover all new uses, incompatibilities have reduced the interoperability of 360 images, and thus reduce the widespread ubiquity, which consumers have come to expect when using JPEG-based images. Additionally, new modalities for interaction with images, such as computer-based augmentation, face-tagging, and object classification, require support for metadata that was not part of the scope of the original JPEG. To avoid fragmentation in the market and to ensure interoperability, a standard way of interaction with multi-sensor images with richer metadata is desired in JPEG standards. This CfP invites all interested parties, including manufacturers, vendors and users of such devices to submit technology proposals for enabling interactions with multi-sensor images and metadata that fulfill the scope, objectives and requirements.

 

High Throughput JPEG 2000

The JPEG Committee is continuing its work towards the creation of a new Part 15 to the JPEG 2000 suite of standards, known as High Throughput JPEG 2000 (HTJ2K).

Since the release of an initial Call for Proposals (CfP) at the outcome of its 76th meeting, the JPEG Committee has completed the software test bench that will be used to evaluate technology submissions, and has reviewed initial registrations of intent. Final technology submissions are due on 1 March 2018.

The HTJ2K activity aims to develop an alternate block-coding algorithm that can be used in place of the existing block coding algorithm specified in ISO/IEC 15444-1 (JPEG 2000 Part 1). The objective is to significantly increase the throughput of JPEG 2000, at the expense of a small reduction in coding efficiency, while allowing mathematically lossless transcoding to and from codestreams using the existing block coding algorithm.

 

JPEG XS

This project aims at the standardization of a visually lossless low-latency lightweight compression scheme that can be used as a mezzanine codec for the broadcast industry, Pro-AV and other markets. Targeted use cases are professional video links, IP transport, Ethernet transport, real-time video storage, video memory buffers, and omnidirectional video capture and rendering. After four rounds of Core Experiments, the Core Coding System has now been finalized and the ballot process has been initiated.

Additional parts of the Standard are still being specified, in particular future profiles, as well as transport and container formats. The JPEG Committee therefore invites interested parties – in particular coding experts, codec providers, system integrators and potential users of the foreseen solutions – to contribute to the further specification process. Publication of the International Standard is expected for Q3 2018.

 

JPEG Pleno

This standardization effort is targeting the generation of a multimodal framework for the exchange of light field, point cloud, depth+texture and holographic data in end-to-end application chains. Currently, the JPEG Committee is defining the coding framework of the light field modality for which the signalling syntax will be specified in part 2 of the JPEG Pleno standard. In parallel, JPEG is reaching out to companies and research institutes that are active in the point cloud and holography arena and invites them to contribute to the standardization effort. JPEG is seeking for additional input both at the level of test data and quality assessment methodologies for this specific type of image modalities as technology that supports their generation, reconstruction and/or rendering.

 

JPEG XL

The JPEG Committee has launched a Next-Generation Image Compression Standardization activity, also referred to as JPEG XL. This activity aims to develop a standard for image compression that offers substantially better compression efficiency than existing image formats (e.g. >60% over JPEG-1), along with features desirable for web distribution and efficient compression of high-quality images.

The JPEG Committee intends to issue a final Call for Proposals (CfP) following its 78th meeting (January 2018), with the objective of seeking technologies that fulfill the objectives and scope of the Next-Generation Image Compression Standardization activity.

A draft Call for Proposals, with all related info, has been issued and can be found in JPEG website. Comments are welcome and should be submitted as specified in the document.

To stay posted on the action plan for JPEG XL, please regularly consult our website at jpeg.org and/or subscribe to our e-mail reflector. You will receive information to confirm your subscription, and upon the acceptance of the moderator will be included in the mailing-list.

 

JPEG Reference Software

Along with its celebration of the 25th anniversary of the commonly known JPEG still image compression specifications, The JPEG Committee has launched an activity to fill a long-known gap in this important image coding standard, namely the definition of a JPEG reference software. For its 77th meeting, The JPEG Committee collected submissions for a reference software that were evaluated for suitability, and started now the standardization process of such software on the basis of submissions received.


IMG_1670r050

JPEG 25th anniversary of the first JPEG standard

The JPEG Committee had a 25th anniversary celebration of its first standard in Macau specifically organized to honour past committee members from Asia, and was proud to award Takao Omachi for his contributions to the first JPEG standard, Fumitaka Ono for his long lasting contributions to JBIG and JPEG standards, and Daniel Lee for contributions to JPEG family of standards and long lasting services as Convenor of the JPEG Committee. The celebrations of the anniversary of this successful standard that is still growing in its use after 25th years will have a third and final event during the 79th JPEG meeting planned in La Jolla, CA, USA.

JPEG77annivers25

 

Final Quote

“JPEG is committed to design of specifications that ensure privacy and other security and protection solutions across the entire JPEG family of standards” said Prof. Touradj Ebrahimi, the Convener of the JPEG committee. 

 

About JPEG

The Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the International Telecommunication Union (ITU-T SG16), responsible for the popular JBIG, JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.

The JPEG group meets nominally three times a year, in Europe, North America and Asia. The latest 75th    meeting was held on March 26-31, 2017, in Sydney, Australia. The next (76th) JPEG Meeting will be held on July 15-21, 2017, in Torino, Italy.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro and Frederik Temmermans of the JPEG Communication Subgroup at pr@jpeg.org.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on https://listserv.uni-stuttgart.de/mailman/listinfo/jpeg-news.  Moreover, you can follow JPEG twitter account on http://twitter.com/WG1JPEG

Future JPEG meetings are planned as follows:

  • No 78, Rio de Janeiro, Brazil, January 27 to February 2, 2018
  • No 79, La Jolla (San Diego), CA, USA, April 9 to 15, 2018
  • No 80, Berlin, Germany, July 7 to 13, 2018

JPEG Column: 76th JPEG Meeting in Turin, Italy

The 76th JPEG meeting was held at Politecnico di Torino, Turin, Italy, from 15 to 21 of July. The current standardisation activities have been complemented by the 25th anniversary of the first JPEG standard. Simultaneously, JPEG pursues the development of different standardised solutions to meet the current challenges on imaging technology, namely on emerging new applications and on low complexity image coding. The 76th JPEG meeting featured mainly the following highlights:

  • JPEG 25th anniversary of the first JPEG standard
  • High Throughput JPEG 2000
  • JPEG Pleno
  • JPEG XL
  • JPEG XS
  • JPEG Reference Software

In the following an overview of the main JPEG activities at the 76th meeting is given.

JPEG 25th anniversary of the first JPEG standard – JPEG is proud tocelebrate the 25th anniversary of its first standard. This very successful standard won an Emmy award in 1995-96 and its usage is still rising, reaching in 2015 the impressive daily rate of over 3 billion images exchanged in just a few social networks. During the celebration, a number of early members of the committee were awarded for their contributions to this standard, namely Alain Léger, Birger Niss, Jorgen Vaaben and István Sebestyén. Also Richard Clark for his long lasting contribution as JPEG Webmaster and contributions to many JPEG standards was also rewarded during the same ceremony. The celebration will continue at the next 77th JPEG meeting that will be held in Macau, China from 21 to 27, October, 2017.

IMG_1113 2

High Throughput JPEG 2000 – The JPEG committee is continuing its work towards the creation of a new Part 15 to the JPEG 2000 suite of standards, known as High Throughput JPEG 2000 (HTJ2K). In a significant milestone, the JPEG Committee has released a Call for Proposals that invites technical contributions to the HTJ2K activity. The deadline for an expression of interest is 1 October 2017, as detailed in the Call for Proposals, which is publicly available on the JPEG website at https://jpeg.org/jpeg2000/htj2k.html.

The objective of the HTJ2K activity is to identify and standardize an alternate block coding algorithm that can be used as a drop-in replacement for the block coding defined in JPEG 2000 Part-1. Based on existing evidence, it is believed that significant increases in encoding and decoding throughput are possible on modern software platforms, subject to small sacrifices in coding efficiency. An important focus of this activity is interoperability with existing systems and content libraries. To ensure this, the alternate block coding algorithm supports mathematically lossless transcoding between HTJ2K and JPEG 2000 Part-1 codestreams at the code-block level.

JPEG Pleno – The JPEG committee intends to provide a standard framework to facilitate capture, representation and exchange of omnidirectional, depth-enhanced, point cloud, light field, and holographic imaging modalities. JPEG Pleno aims at defining new tools for improved compression while providing advanced functionalities at the system level. Moreover, it targets to support data and metadata manipulation, editing, random access and interaction, protection of privacy and ownership rights as well as other security mechanisms. At the 76th JPEG meeting in Turin, Italy, responses to the call for proposals for JPEG Pleno light field image coding were evaluated using subjective and objective evaluation metrics, and a Generic JPEG Pleno Light Field Architecture was created. The JPEG committee defined three initial core experiments to be performed before the 77thJPEG meeting in Macau, China. Interested parties are invited to join these core experiments and JPEG Pleno standardization.

JPEG XL – The JPEG Committee is working on a new activity, known as Next generation Image Format, which aims to develop an image compression format that demonstrates higher compression efficiency at equivalent subjective quality of currently available formats and that supports features for both low-end and high-end use cases.  On the low end, the new format addresses image-rich user interfaces and web pages over bandwidth-constrained connections. On the high end, it targets efficient compression for high-quality images, including high bit depth, wide color gamut and high dynamic range imagery. A draft Call for Proposals (CfP) on JPEG XL has been issued for public comment, and is available on the JPEG website.

JPEG XS – This project aims at the standardization of a visually lossless low-latency lightweight compression scheme that can be used as a mezzanine codec for the broadcast industry and Pro-AV markets. Targeted use cases are professional video links, IP transport, Ethernet transport, real-time video storage, video memory buffers, and omnidirectional video capture and rendering. After a Call for Proposal and the assessment of the submitted technologies, a test model for the upcoming JPEG XS standard was created. Several rounds of Core Experiments have allowed to further improving the Core Coding System, the last one being reviewed during this 76th JPEG meeting in Torino. More core experiments are on their way, including subjective assessments. JPEG committee therefore invites interested parties – in particular coding experts, codec providers, system integrators and potential users of the foreseen solutions – to contribute to the further specification process. Publication of the International Standard is expected for Q3 2018.

JPEG Reference Software – Together with the celebration of 25th anniversary of the first JPEG Standard, the committee continued with its important activities around the omnipresent JPEG image format; while all newer JPEG standards define a reference software guiding users in interpreting and helping them in implementing a given standard, no such references exist for the most popular image format of the Internet age. The JPEG committee therefore issued a call for proposals https://jpeg.org/items/20170728_cfp_jpeg_reference_software.html asking interested parties to participate in the submission and selection of valuable and stable implementations of JPEG (formally, Rec. ITU-T T.81 | ISO/IEC 10918-1).

 

Final Quote

“The experience shared by developers of the first JPEG standard during celebration was an inspiring moment that will guide us to further the ongoing developments of standards responding to new challenges in imaging applications. said Prof. Touradj Ebrahimi, the Convener of the JPEG committee.

About JPEG

JPEG-signatureThe Joint Photographic Experts Group (JPEG) is a Working Group of ISO/IEC, the International Organisation for Standardization / International Electrotechnical Commission, (ISO/IEC JTC 1/SC 29/WG 1) and of the Interna
tional Telecommunication Union (ITU-T SG16), responsible for the popular JBIG, JPEG, JPEG 2000, JPEG XR, JPSearch and more recently, the JPEG XT, JPEG XS, JPEG Systems and JPEG Pleno families of imaging standards.

The JPEG group meets nominally three times a year, in Europe, North America and Asia. The latest 75th    meeting was held on March 26-31, 2017, in Sydney, Australia. The next (76th) JPEG Meeting will be held on July 15-21, 2017, in Torino, Italy.

More information about JPEG and its work is available at www.jpeg.org or by contacting Antonio Pinheiro and Frederik Temmermans of the JPEG Communication Subgroup at pr@jpeg.org.

If you would like to stay posted on JPEG activities, please subscribe to the jpeg-news mailing list on https://listserv.uni-stuttgart.de/mailman/listinfo/jpeg-news.  Moreover, you can follow JPEG twitter account on http://twitter.com/WG1JPEG.

Future JPEG meetings are planned as follows:

  • No. 77, Macau, CN, 23 – 27 October 2017