EZW coding using non-uniform quantization

被引：0

作者：

Yin, CY ^{[1
]}

Derin, H ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Elect & Comp Engn, Amherst, MA 01003 USA

来源：

WAVELET APPLICATIONS IN SIGNAL AND IMAGE PROCESSING VII | 1999年 / 3813卷

关键词：

D O I：

10.1117/12.366846

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

This paper presents an image coder that modifies the EZW coder and provides an improvement in its performance. The subband EZW image coder uses a uniform quantizer with a threshold (deadzone). Whereas, we know that the distribution/histogram of the wavelet tree subband coeffcients, all except the lowest subband, tend to be Laplacian. To accommodate for this, we modify the refining procedure in EZW and use a non-uniform quantizer on the coefficients that better fits their distribution. The experimental results show that the new image coder performs better than EZW.

引用

页码：884 / 894

页数：3

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