An Improved Algorithm of Image Compression Based on Wavelet Transform

doi:10.3969/j.issn.1006-2475.2014.10.028

Abstract

Abstract: With the advent of the digital age, the data of image becomes more and more big, people have higher requirement for the quality of image, so a good image compression technology is also becoming more and more important. An algorithm of high compression ratio and low distortion is the focus of the field of image compression. And for the image compression based on wavelet transform, the distortion of image would become more obvious with the improvement of compression ratio. The low-frequency of sub-band images which comes from wavelet decomposition is applied into the fourth order of DPMC linear prediction to improve the distortion problem. Experimental results show that the problem of the distortion is improved under the conditions of the same compression ratio.


Key words: wavelet transform, decomposition and reconstruction, DPMC linear prediction, image compression, SNR

CLC Number:

TP301.6

YANG Ting1,2, GUAN Hong-yun1,2, ZHANG Wen-kang1,2, FAN Xiao-qing1,2. An Improved Algorithm of Image Compression Based on Wavelet Transform[J]. Computer and Modernization, doi: 10.3969/j.issn.1006-2475.2014.10.028.

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