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ALGORITHMS FOR SCALABLE AND NETWORK-ADAPTIVE
VIDEO CODING AND TRANSMISSION
by
Huisheng Wang
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(ELECTRICAL ENGINEERING)
December 2007
Copyright 2007 Huisheng Wang
Object Description
| Title | Algorithms for scalable and network-adaptive video coding and transmission |
| Author | Wang, Huisheng |
| Author email | huisheng.wang@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Electrical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2007-04-30 |
| Date submitted | 2007 |
| Restricted until | Unrestricted |
| Date published | 2007-10-01 |
| Advisor (committee chair) | Ortega, Antonio |
| Advisor (committee member) |
Zhang, Zhen Shahabi, Cyrus |
| Abstract | Real-time multimedia services over the Internet face some fundamental challenges due to time constraints of those applications and network variations in bandwidth, delay and packet loss rate. Our research addresses the problem of network-adaptive video coding and streaming based on source codecs that provide scalability to match the network environments.; The first part of the thesis focuses on scheduling algorithm design for network-adaptive video streaming. We extend previous work on rate-distortion optimized video streaming to address more general coding techniques that support multiple decoding paths to enhance adaptation flexibility. Prior work had only considered a single decoding path. Examples of multiple decoding paths include cases where there are multiple redundant representations of the media data or where error concealment is used. An example of these codes is our proposed multiple description layered coding (MDLC), which combines the advantages of layered coding and multiple description coding. This work is composed of several main components: (1) a new source model called directed acyclic hyperGraph (DAHG) to estimate the expected end-to-end distortion;(2) rate-distortion based scheduling algorithms to adjust dynamically the system's real-time redundancy to match the channel behavior; and (3) performance analysis on both source redundancy and transport redundancy. Experimental results show that the proposed streaming framework can provide a very robust and efficient video communication for real-time applications over lossy packet networks.; The second part proposes a framework for adaptive scalable video coding using Wyner-Ziv techniques. The current scalable video coding standards suffer to some degree from a combination of lower coding performance and higher coding complexity, as compared to non-scalable coding. A key issue is how to exploit temporal correlation efficiently in scalable coding. We propose a novel scalable coding approach by introducing distributed source coding in enhancement layer prediction in order to achieve a better coding performance with reasonable encoding complexity. Experimental results show significant improvements in coding efficiency over MPEG-4 FGS, especially for video sequences with high temporal correlation. |
| Keyword | video coding; multimedia communication; network-adaptive video streaming; rate-distortion optimized streaming; scalable coding; multiple description coding; multiple description layered coding; distributed source coding; Wyner-Ziv coding; multiple decoding paths; source redundancy; transport redundancy |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Type | texts |
| Legacy record ID | usctheses-m835 |
| Rights | Wang, Huisheng |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Wang-20071001 |
| Archival file | uscthesesreloadpub_Volume51/etd-Wang-20071001.pdf |
Description
| Title | Page 1 |
| Full text | ALGORITHMS FOR SCALABLE AND NETWORK-ADAPTIVE VIDEO CODING AND TRANSMISSION by Huisheng Wang A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (ELECTRICAL ENGINEERING) December 2007 Copyright 2007 Huisheng Wang |
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