Design of predictive vector quantizer for image coding

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Title: Design of predictive vector quantizer for image coding
Author: Yin, Jie
Abstract: Due to the prediction loop , instability is a major difficulty in the design of a predictive quantizer . The conventional open -loop method enjoys good stability but suffers from poor performance . In contrast , the closed -loop method may be able to perform better but it can not guarantee a complete convergence and so it is unstable . Recently , the asymptotic closed -loop approach was proposed to benefit from the stability of open -loop design while asymptotically optimizing the actual closed -loop system . In this work , all of the above three design algorithms for predictive quantization are discussed and applied to image coding . Based on the analysis of simulation results , modifications to closed -loop design and asymptotic closed -loop design are proposed for further improvement in design quality and reliability .
URI: http : / /hdl .handle .net /2346 /9765
Date: 2005-05


Yin, Jie Design of predictive vector quantizer for image coding. Master's thesis, Texas Tech University. Available electronically from http : / /hdl .handle .net /2346 /9765 .

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