新建文件夹\B_Dc_dpcm_decode.m ..........\B_Dc_dpcm_encode.m ..........\DCT.m ..........\fangda.m ..........\get_H_DCT11.m ..........\get_H_DCT_ret.m ..........\Huffman_decode.m ..........\Huffman_encode.m ..........\lianghua.m ..........\suoxiao.m 新建文件夹