摘要： The research of wavelet coders has been being active since Mallat found the fast algorithm of wavelet transform.The novel compression standards JPEG2000 and MPEG-4,both using wavelent transform,will be finished in this year.There are two main factors whic

关键词: 小波 图像编码器 图像压缩 信息熵 图像编码　图像处理