blinddigital
............\blind_emb.m
............\blind_extraction.m
............\CQ.m
............\erzhituxiang.bmp
............\fil_code.m
............\jiji.bmp
............\jpeg_extraction.m
............\lena.bmp
............\mark.bmp
............\mul_emb.m
............\mul_extration.m
............\PSNR.m