编码程序\程序说明.txt 编码程序 ........\ACHuffmanEncoding.m ........\ACdecoding.m ........\DCHuffmanEncoding.m ........\DCdecoding.m ........\PSNR.m ........\decoding.m ........\func_DCT1.m ........\lena64.bmp ........\zigzag.m