一种基于JPEG2000的半脆弱数字水印

A Semi-fragile Digital Watermarking Algorithm Based on JPEG2000

利用JPEG2000编解码系统提供的小波变换和EBCOT技术,提出了一种用于JPEG2000图像认证的半脆弱数字水印算法。该算法把水印嵌入到量化后小波系数的高频部分中,对JPEG2000编解码系统的影响小。文章最后给出算法的仿真实验结果并加以分析,实验结果表明该算法对一般的JPEG2000压缩具有较强的鲁棒性,对常见的攻击如:剪切、噪声等具有脆弱性。

An new semi-fragile watermark algorithm for JPEG2000 image authentication is introduced,it based on utilization wavelet transform and EBCOT that JPEG2000 offerred.The watermark is inserted into the high frequency of wavelet coefficients quantified,which has little effect with JPEG2000 encoding decoding system.At last,the test result of the algorithm is given,and annlyzed.Experiments indicate that the algorithm has robustness generally JPEG2000 compression,has a fragile on the usual attacks e.g.：shearography、noise.