Constant Quality Constrained Rate Allocation for FGS-Coded Video Xi Min Zhang, Student Member, IEEE,...

Constant Quality Constrained Rate Allocation for FGS-Coded Video

Xi Min Zhang, Student Member, IEEE, Anthony Vetro, Member, IEEE, Yun Q. Shi,

Senior Member, IEEE, andHuifang Sun, Fellow, IEEE

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 13, NO. 2, FEBRUARY 2003

Outline

Introduction Background of optimal rate allocation R-D extraction of FGS coded video Constant quality rate allocation

for single FGS source for multiple FGS source

Experimental Results Concluding Remarks

Introduction

I P P P P P P

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FGS encoded video

base layer

enhancement layer

Introduction(2)

Goal： achieve constant quality

minimize the overall distortion at the same time

Background of optimal rate allocation

λ： lagrngian multiplier

minimize the cost function J(λ)

minimize the variation in quality

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R-D extraction of FGS coded video

R-D extraction for enhancement layer

(a)Spatial domain (b)DCT domain

R-D extraction of FGS coded video(2)

piecewise-linear model：

piecewise-exponential model：

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Constant quality rate allocation

rate allocation

rate allocation by sliding-window

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Constant quality rate allocation(2)

sliding window approach for multiple FGS source

Constant quality rate allocation(3)

sliding window approach for multiple FGS source

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Experimental Results

Experimental Results(2)

Experimental Results(3)

Concluding Remarks

An R-D labeling scheme was proposed The sliding-window-based rate-allocation

method