Quantizer for Wyner-Ziv System Applica

tion指 導 教 授：楊 士 萱報 告 學 生：李 桐 照

Outline Distributed Video Coding Introduction Quantizer Design Simulation Result Future work

Distributed Video Coding Introduction

Quantizer Design 1/4

Gaussian Scalar Asymmetric Case

Quantizer Design 2/4

Experimental Result

DWT Low-Freq

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Quantizer Design 3/4

Idea:

Side information helps distinguish source values

Quantizer Design 4/4

Design of optimal quantizers for distributed source codingRebollo-Monedero, D.; Rui Zhang; Girod, B.;Data Compression Conference, 2003. Proceedings. DCC 200325-27 March 2003

New Lloyd Algorithm

Simulation Result 1/5

Simulation Result 2/5

Simulation Result 3/5

Simulation Result 4/5

Simulation Result 5/5

Conclusion:Wyner-Ziv SPIHT 碼率越接近Key Frame SPIHT 碼率時 ,則採用Wyner-Ziv System 的效益就越高

Future work

2006/3/6~2006/3/19 Implementation of Quantizer