中文说明：内容认证半脆弱水印算法的研究与实现，本程序实现图像的半脆弱水印，是基于DCT的算法，特别适合研究半脆弱水印的同志
English Description：
Content authentication semi fragile watermarking algorithm research and implementation, this program to achieve semi fragile image watermarking, is based on DCT algorithm, especially suitable for the study of semi fragile watermark comrades