摘要
讨论了整数CDF(2,2)可逆双正交小波变换,该方法可以由加法和移位完成,所以运算速度快,便于硬件实现该方法与SPIHT以及熵编码相结合可以实现无失真图像压缩,与ARJ、JPEG、整数Haar变换结合DPCM中使用的无失真编码方法相比,压缩比分别平均提高了40%、30%、15%左右。
The integer CDF(2,2)Biorthogonal Wavelet Transform is discussed.This method is completed by add and shift operation,so it has fast operation rate,and easy to implement by hadware.Which combine with SPIHT and entropy coding can implement image lossless compression.Compared with Arj and lossless algorithm used in JPEG and lossless algorithm used integer Haar wavelet transform with DPCM,the new algorithm improves the compression rate by40%,30%,15%respectively.
出处
《计算机工程与应用》
CSCD
北大核心
2002年第4期60-61,65,共3页
Computer Engineering and Applications
基金
中国科学院知识创新工程青年基金资助项目(编号:Q01H01)
