Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.799168
Title: Multi-objective optimization of video coding and transcoding
Author: Al-Abri, Fatma
Awarding Body: Loughborough University
Current Institution: Loughborough University
Date of Award: 2010
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Abstract:
Digital video coding technologies are currently of widespread use within many heterogeneous communication services that are supported by multimodal devices and systems. With these services and systems comes the need of using video Codecs and transcoders that can perform optimally under multiple objectives and varying constraints, related mostly to rate, distortion, memory usage, complexity, delay, packet loss and battery power. The research presented in this thesis proposes a generalised multi-objective optimization framework that can optimize the performance of a H.264/AVC Codec and a H.264/AVC based multi-architecture transcoding system. In the first part of this research, an optimization scheme is designed to determine the optimum coding parameters for a H.264/AVC video Codec in a memory and bandwidth constrained environment, which minimises Codec complexity and distortion. The same optimization framework is later extended by including delay as an additional constraint. The second part of the optimization work presented in this thesis focuses on developing an optimal H.264/AVC transcoding system that is capable of selecting a transcoding method from a multitude of different alternatives, subject to available system resources and client requirements of bitrate and quality of the requested video. Both parts of the research have been evaluated via rigorous experimental analysis, leading to optimal solutions.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.799168  DOI: Not available
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