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motion estimation and compensation for very low bitrate video coding

motion estimation and compensation for very low bitrate video coding

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Contents<br />

Introduction 1<br />

Preamble :::::::::::::::::::::::::::::: 1<br />

Introduction <strong>and</strong> Thesis Outline ::::::::::::::::: 6<br />

Contributions of the Thesis :::::::::::::::::::: 10<br />

1 Digital Video Coding at Very-Low BitRate 13<br />

1.1 Digital Video ::::::::::::::::::::::::: 14<br />

1.2 Video Coding ::::::::::::::::::::::::: 15<br />

1.2.1 Image Compression :::::::::::::::::: 15<br />

1.2.2 Video Compression :::::::::::::::::: 18<br />

1.3 Coding at Very-Low BitRate :::::::::::::::: 20<br />

1.4 Some (Very-) Low BitRate Codecs ::::::::::::: 21<br />

1.4.1 H.263 ::::::::::::::::::::::::: 21<br />

1.4.1.1 Intra Macroblocks ::::::::::::: 22<br />

1.4.1.2 Inter Macroblocks <strong>and</strong> Residues ::::: 23<br />

1.4.1.3 Options ::::::::::::::::::: 23<br />

1.4.1.4 Future Improvements: H.263+ :::::: 24<br />

1.4.2 \COMIS", the UCL Approach ::::::::::: 24<br />

1.4.2.1 Intra Images :::::::::::::::: 25<br />

1.4.2.2 Inter Images :::::::::::::::: 31<br />

1.4.3 The Emerging MPEG-4 St<strong>and</strong>ard ::::::::: 33<br />

1.4.3.1 Developments to Be Supported :::::: 34<br />

1.4.3.2 A New Challenge <strong>for</strong> the Representation<br />

of Audio-Visual In<strong>for</strong>mation ::::::: 34<br />

1.4.3.3 Video Coding in MPEG-4 ::::::::: 35<br />

1.5 Discussion ::::::::::::::::::::::::::: 37<br />

2 Motion in the Framework of Video Coding 39<br />

2.1 Image Formation <strong>and</strong> Motion :::::::::::::::: 41

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