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JPEG 2000 wavelet filter design framework with chaos evolutionary programming

机译:带有混沌进化编程的JPEG 2000小波滤波器设计框架

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摘要

JPEG 2000 is an international standard for still image compression, which is based on wavelet transformation and the Daubechies 9/7 filter adopted for lossy compression. Considering that a wavelet filter might be suitable for one image but not for the other in regard to compression quality, in this paper, we propose a novel filter design framework based on the Daubechies 9/7 filter, which employs chaos evolution programming (CEP) to optimize the wavelet filter for both the universal images and each specific image, respectively. The customized filter design is ready to incorporate into the JPEG 2000 compression/decompression since the filter coefficients can be constructed by only one tuning parameter, which can be easily packaged into the modified JPEG 2000 header. Experimental results show that CEP-trained filters achieve higher image quality.
机译:JPEG 2000是静止图像压缩的国际标准,该标准基于小波变换和采用Daubechies 9/7滤波器进行有损压缩。考虑到小波滤波器在压缩质量方面可能适合一幅图像,但不适用于另一幅图像,在本文中,我们提出了一种基于Daubechies 9/7滤波器的新颖滤波器设计框架,该框架采用了混沌进化编程(CEP)分别针对通用图像和每个特定图像优化小波滤波器。定制的滤波器设计随时可以合并到JPEG 2000压缩/解压缩中,因为滤波器系数只能由一个调整参数构成,可以很容易地打包到修改后的JPEG 2000标头中。实验结果表明,经过CEP训练的滤波器可获得更高的图像质量。

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