matlab数字图象压缩代码\dct_y1_zuizhong1.m.txt ......................\zhifang.m.txt ......................\pinp.m.txt ......................\dct_y1_zuizhong1.m ......................\pinp.m ......................\zhifang.m ......................\运行主函数dct_y1_zuizhong1.m文件.txt matlab数字图象压缩代码