摘要
数字水印技术是解决信息安全和数字媒体的版权保护的一种有效手段．笔者将CDMA技术引入数字水印技术中，提出一种基于CDMA（Code Division Multiple Access）和HVS（人类视觉系统）的灰度图像数字水印算法．该算法采用CDMA扩频技术对水印信息进行正交化处理提高安全性，并在将水印信息嵌入原始灰度图像时充分考虑了人眼的视觉特征．实验证明该算法具有良好的鲁棒性和不可见性，是一种有效的方法．
Digital watermarking technology is an effective means to solve the problems of information security and copyright protection of digital media. This paper proposed a gray image digital watermarking algorithm based on CDMA（Code Division Multiple Access） and HVS（Human Visual System）. To improve the security, CDMA was used to spread spectrum of the original watermarking. The characteristic of HVS is full considered when embedding watermark into the original picture. The results of series of attacking experiments indicated that this method was efficiently invisible and robust against varies image processing operations .
出处
《山东师范大学学报（自然科学版）》
CAS
2010年第4期18-21,共4页
Journal of Shandong Normal University(Natural Science)
基金
山东省自然科学基金资助项目（ZR2010FM021）.
