Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 72 for “"video quality"”.
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ATM network impairment to video quality
Includes bibliographical references
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New Test Set for Video Quality Benchmarking
… observer" to assess the end-to-end image quality characteristics of video imaging systems operating in day time or low-light conditions.</p> <p>It uses randomized targets based on extensive application of Photometry, Geometrical Optics, and Digital Media.</p> <p>The benchmarking takes into …
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A new video quality metric for compressed video.
Video compression enables multimedia applications such as mobile video messaging and streaming, video conferencing and more recently online social video interactions to be possible. Since most multimedia applications are meant for the human observer, measuring perceived video quality during the …
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Digital Watermarking Based Image and Video Quality Evaluation
Image and video quality evaluation is very important. In applications involving signal transmission, the Reduced- or No-Reference quality metrics are generally more practical than the Full-Reference metrics. Digital watermarking based quality evaluation emerges as a potential Reduced- or …
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Development of video quality metrics based on psychovisual models of early vision
Streaming video incurs many distortions during processing, compression, storage, and transmission, all of which can reduce the user's perceived video quality. Developing adaptive video transmission methods that increase the efficient use of existing bandwidth and reduce storage space while …
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Video quality requirements for South African Sign Language communications over mobile phones.
This project aims to find the minimum video resolution and frame rate that supports intelligible cell phone based video communications in South African Sign Language.
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Simulation Tool and Metric for Evaluating Wireless Digital Video Systems
… focuses on the interaction between digital video quality and channel coding in a wireless communication system. Digital video is a high-bandwidth, computationally intensive application. The recent allocation of large tracks of spectrum by the FCC has made possible the design and …
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Adaptiver Videotransport in Mobilfunknetzen
This thesis focuses on interactive video communication in mobile communication networks. It describes a system, which allows adherence of delay deadlines for video transport over wireless links. The system consists out of a packet scheduler and a 2 level admission controller. The proposed system …
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Advanced modelling of adaptive bitrate selection
Nowadays, a typical video content provider serves a variety of platforms e.g. smartphones, web browsers, and smart TVs. Each of these platforms has specific requirements with respect to transmission and video quality. Moreover, since these devices are increasingly being used on-the-go, the …
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End-to-end video adaptation using frame rate optimization and TCP-friendly rate control
In this research, we focus on two areas of video adaptation: video rate control and frame rate control. The first part is on video rate control, which aims to adjust video bitrate to meet the network constraint. To that end, we propose a joint source rate and congestion control scheme called video …
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Gesture based interface for asynchronous video communication for deaf people in South Africa
… of sign language. There are problems with the video quality when using the real-time video communication available on mobile phones. The alternative is to use text-based communication on mobile phones, however findings from other research studies show that Deaf people prefer using sign language …
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Proxy caching for robust video delivery over lossy networks
Video delivery is anticipated to become among the most popular services in networking. The rapid advances in communication technologies, combined with the increasing efficiency of video compression techniques have paved the way for innovative and exciting video communication applications. However, …
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Factors Influencing College Students’ Learning Satisfaction With Educational Videos
… education produced a large number of educational videos. Educational videos have become supplementary teaching resources for teachers in the classroom and independent digital learning materials for students outside of the classroom. However, the rapid production of educational videos to meet …
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An adaptive SVC-video streaming scheme for mobile WiMAX networks
… is bandwidth fluctuation that occurs during a video stream delivery over the Mobile WiMAX network, which results in video quality degradation. To address this problem, H.264AVC/SVC coded video is used.
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Fast implementations of block motion estimation algorithms in video encoders
… existing algorithms, whilst ensuring acceptable video quality.
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The Role and Appraisal of Online Videos in Postgraduate Health Education
… is an increasing availability of online medical videos for health professionals to use for learning procedural skills; however, their quality varies greatly. Currently, there is a lack of quality assessment tools for evaluating the quality of such videos. This thesis reports on the process of …
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Efficient delivery of scalable media streaming over lossy networks
… 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 …
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Performance analysis of H.264 encoder for high-definition video transmission over ultra-wideband communication link.
… revolutionized and the High-definition (HD) video has become a common feature of our modern amusement devices. Moreover, the demand for wireless transmission of HD video is rising increasingly for its ubiquitous nature, easy installation and relocation. The high bandwidth requirement is the …
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An adaptive and reliable forward error correction mechanism for real-time video delivery from UAVs
… advanced protocol designed to enhance real-time video transmission in Unmanned Aerial Vehicles (UAVs) communications. Addressing the challenge of unreliable wireless channels, AR-FEC leverages edge computing principles at the application layer to incorporate adaptive FEC, dynamic video quality, …
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