一种基于显著不相关检验的近距分形图象编码方法

熊惠霖; 张天序

doi:10.11834/jig.199806152

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专辑

一种基于显著不相关检验的近距分形图象编码方法
A Neighboring Search Fratcal lmage Coding Based on Testing Significant Uncorrelation of Blocks
1998年3卷第6期页码：461
纸质出版：1998
DOI： 10.11834/jig.199806152
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熊惠霖, 张天序. 一种基于显著不相关检验的近距分形图象编码方法[J]. 中国图象图形学报, 1998,3(6):461. DOI： 10.11834/jig.199806152.

A Neighboring Search Fratcal lmage Coding Based on Testing Significant Uncorrelation of Blocks[J]. Journal of Image and Graphics, 1998, 3(6): 461. DOI： 10.11834/jig.199806152.

摘要

提出一种基于显著不相关检验的近距分形图象编码方法。对于标准测试图象(Lena256×256×8ppb)，这种方法与子块分类方法相比，以解码图象质量(PSNR)下降2～3(dB)为代价，编码速度提高了70～200倍，且压缩比还有一定的提高；与普通近距分形方法相比，在解码图象质量（ＰＳＮＲ）不下降的情况下，编码速度提高约32%；若以解码图象质量(PSNR)下降0.2～1(dB)为代价，编码速度提高3～9倍。

Abstract

In this paper

we proposed a very fast fractal image coding method

which is based on neighboring search for the matching of image blocks and testing of significant uncorrelation of blocks. For the standard test image(Lena 256×256×8ppb)

comparing with the classification method

we recorded acceleration factors from 70 up to 200 with 2(dB) to 3(dB) deg radation of PSNR and some improvement of the compression ratio; comparing with the ordinary neighboring search method

we recorded a 32% acceleration factor without any degradation of PSNR

and if 0.2(dB) to 1(dB) degradation of PSNR are permitted

acceleration factors from 3 to 9 are recorded.