patchwork图像信息隐藏，修改图像数据的数值组实现
资源文件列表
3.3/extract.m , 585
__MACOSX/3.3/._extract.m , 223
3.3/lena.bmp , 41078
__MACOSX/3.3/._lena.bmp , 223
3.3/patchwork.m , 472
__MACOSX/3.3/._patchwork.m , 223
3.3/randextract.m , 586
__MACOSX/3.3/._randextract.m , 223
3.3/randhiding.m , 691
__MACOSX/3.3/._randhiding.m , 223
__MACOSX/._3.3 , 223