摘要
通过构造一个包含Cohen和Daubechies等人的著名 9 7小波滤波器 (CDF97)的超小波滤波器族 ,获得了新的 9 7小波滤波器 ,它们不仅有很好的压缩性能 ,也有很好的计算性能 ,有利于ASIC的设计 .试验结果表明 ,新的小波滤波器几乎具有CDF97的客观压缩性能 ,并且能保留更多的图像细节 .因此 ,在标准化图像压缩系统中 。
This paper constructs a class of 9 7 tap wavelets filters,in which the famous 9 7 tap wavelet (CDF97) of Cohen and Daubechies is contained.New wavelets filters obtained from the class not only have excellent compression performances but also easy computation and are very suitable for design of ASIC.The test results for compression performances have shown that new filters are good almost as CDF97 under PSNR and can save more details.Therefore,the filters constructed in this paper are ideal replacement of CDF97 in standardized image compression systems based on wavelets.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第1期130-132,共3页
Acta Electronica Sinica
关键词
超小波
滤波器
循环矩阵
图像压缩
hyper wavelets
filters
circular matrix
image compression
