图形图象中dct变换中用到的反zigzag扫描原代码是基于matlab中的开发-graphic images used Copy transform the anti-Zigzag scanning source code, which is based on Matlab Development

函数功能：本函数将完成对输入的 8*8 矩阵按照 zigzag 排列抽取数据 matrix 为输入矩阵 select==1 为正变换，select==2为反变换 zigdone 为输出矩阵-Function: This function will complete the input of 8* 8 matrix of data collected in accordance with the zigzag array matrix as input matrix select ==

blkproc.m,DCHuffmanEncoding.m,ACHuffmanEncoding.m,zigzag.m,PSNR.m, 对灰度图像进行DCT变换,量化,ZigZag扫描,Huffman编解码,反量化,反DCT变换而重建图像。 其中，blkproc.m为分块DCT变换函数； DCHuffmanEncoding.m，ACHuffmanEncoding.m分别为DC和AC变换系数的Huffman码表函数； zigzag.m为ZigZag扫描函数；PSNR.m为求图