PhD Thesis Summaries

  • Hamed Ahmadi

    Hamed Ahmadi

    Fulfilling cloud gaming’s (CG) ultimate goal; i.e., playing video games wherever, whenever and on every devices, requires reduction of its high bandwidth demand in a way that doesn’t adversely affect the players’ quality of experience. One way to do so is to reduce the bitrate of the regions in the scene that the player pays ...

  • Britta Meixner

    Britta Meixner

    Modern Web technology makes the dream of fully interactive and enriched video come true. Nowadays it is possible to organize videos in a non-linear way playing in a sequence unknown in advance. Furthermore, additional information can be added to the video, ranging from short descriptions to animated images and further videos. This affords an easy ...

  • Honglin Yu

    Honglin Yu

    Understanding the popularity evolution of online media has become an important research topic. There are a number of key questions which have high scientific significance and wide practical relevance. In particular, what are the statistical characteristics of online user behaviors? What are the main factors that affect online collective attention? How can one predict the ...

  • Sambit Bakshi

    Sambit Bakshi

    The advent of biometric system as a next-generation solution towards bringing social and national security to a technically-achievable scenario. This paradigm of authentication has easily taken over the classical token-based and knowledge-based systems. The last decade has seen researches claiming face and iris to be the most promising two traits. Iris produces high accuracy with ...

  • Rodrigo Laiola Guimarães

    Rodrigo Laiola Guimarães

    Creating compelling multimedia productions is a non-trivial problem. This is true for both professional and personal content. For professional content, extensive production support is typically available during creation. Content assets are well structured, content fragments are professionally produced with high quality, and production assets are often highly annotated (within the scope of the production ...

  • Mario Montagud Climent

    Mario Montagud Climent

    Nowadays, we are witnessing a transition from physical togetherness towards networked togetherness around media content. Novel forms of shared media experiences are gaining momentum, allowing geographically distributed users to concurrently consume the same media content while socially interacting (e.g., via text, audio or video chat). Relevant use cases are, for example, Social TV, networked games ...

  • Hoda Roodaki

    Hoda Roodaki

    With the growing demand for 3D video, efforts are underway to incorporate it in the next generation of broadcast and streaming applications and standards. Scalability is one possible solution to reduce the amount of data in multi-view/3D video in heterogeneous environments. But using Scalable Multi-view Video Coding (SMVC) for multi-view/3D video still has many unresolved ...

  • Abbas Javadtalab

    Abbas Javadtalab

    Video streaming applications over best-effort networks, such as the Internet, have become very popular among Internet users. Watching live sports and news, renting movies, watching clips online, making video calls, and participating in videoconferences are typical video applications that millions of people use daily. One of the most challenging aspects of video communication is the ...

  • Ying Zhang

    Ying Zhang

    In recent years, we have witnessed an overwhelming number of user-generated videos being captured on a daily basis. An essential reason is the rapid development in camera technology and hence videos are easily recorded on multiple portable devices, especially mobile smartphones. Such flexibility encourages the modern videos to be tagged with additional various sensor properties. ...

  • Jason J Quinlan

    Jason J Quinlan

    Recent years have witnessed a rapid growth in the demand for streaming video over the Internet, exposing challenges in coping with heterogeneous device capabilities and varying network throughput. When we couple this rise in streaming with the growing number of portable devices (smart phones, tablets, laptops) we see an ever-increasing demand for high-definition videos online ...

  • Lilian Calvet

    Lilian Calvet

    The thesis deals with the problem of 3D reconstruction of a rigid scene from a collection of views acquired by a digital camera. The problem addressed, referred as the Structure-from-Motion (SfM) problem, consists in computing the camera motion (including its trajectory) and the 3D characteristics of the scene based on 2D trajectories of imaged features ...

  • Dakshina Ranjan Kisku

    Dakshina Ranjan Kisku

    Human physiological or behavioral characteristics are available uniquely to each individual as biometrics evidence and the biometrics system can be able to verify or identify a person correctly. Reliable person recognition is an important problem in diverse fields. Biometrics recognition based on distinctive personal traits, has the potential to become an irreplaceable part of many ...

  • Chidansh Amitkumar Bhatt

    Chidansh Amitkumar Bhatt

    Advances in data acquisition and storage technology have led to the growth of very large multimedia databases. Analyzing this huge amount of multimedia data to discover useful knowledge is a challenging problem. This challenge has opened the opportunity for research in Multimedia Data Mining (MDM), the process of finding interesting patterns from media data such ...

  • Håvard Espeland

    Håvard Espeland

    Working with modern architectures for high performance applications is increasingly more diffi- cult for programmers as the complexity of both the system architectures and software continue to increase. The level of hand tuning and native adaptations required to achieve high performance comes at the cost of limiting the portability of the software. For instance, we ...

  • Jia Hao

    Jia Hao

    The astounding volume of camera sensors produced for and embedded in cellular phones has led to a rapid advancement in their quality, wide availability and popularity for capturing, uploading and sharing of videos (also referred to user-generated content or UGC). Furthermore, GPS-enabled smartphones have become an essential contributor to location-based services. A large number of ...

  • Johannes Konert

    Johannes Konert

    Social Media, as an information and communication technology, enables users to exchange information about experiences and insights in easy ways. Such exchange can be used for peer interaction among players of educational computer games as well. The players profit from social media content as learning resources are created, edited, and then shared by peers. Therefore, ...

  • Afsaneh Asaei

    Afsaneh Asaei

    This thesis takes place in the context of multi-microphone distant speech recognition in multiparty meetings. It addresses the fundamental problem of overlapping speech recognition in reverberant rooms. Motivated from the excellent human hearing performance on such problem, possibly resulting of sparsity of the auditory representation, our work aims at exploiting sparse component analysis in speech ...

  • Mehdi Semsarzadeh

    Mehdi Semsarzadeh

    With recent advances in computing and communication technologies, ubiquitous access to high quality multimedia content is a fact of our daily life. However, resource consumption is still a major concern, specially battery consumptions for mobile devices. Today, any user is able to produce and consume multimedia contents using a smartphone or a tablet. In many ...

  • Emanuele Carlini

    Emanuele Carlini

    This dissertation investigates the combination of Peer-to-Peer (P2P) and Cloud Computing to support Massively Multiplayer Online Games (MMOGs). MMOGs are large-scale distributed applications allowing for a large amount of users worldwide to share a real-time virtual environment. Today’s commercial architectures for MMOG are over-sized to support peak loads, therefore expensive and hardly adaptable to the ...

  • Ulrich Lampe

    Ulrich Lampe

    Since the early days of computing, a vision has been to provide Information Technology services in the form of a utility, just like water, electricity, or telephony. With the advancement of the cloud computing paradigm since the mid-2000s, this vision has been put into realization. Cloud computing builds on and combines multiple existing technologies and ...

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