摘要
数字水印防伪技术是实现版权保护的重要手段。基于图像特征区域的水印技术将水印信号只叠加在人们感兴趣的部分。首先是通过曲线跟踪算法选择特征物体 ,然后根据人眼对亮度信息变化最为敏感的特点利用盲水印算法将水印信息加入图像的亮度信息中。由于水印提取时不需要原始载体图像。因此 ,文中介绍的图像特征区域水印防伪系统除了具有现有数字水印系统的优点以外 ,还具有更高的鲁棒性和抗裁剪、抗旋转攻击等特殊功效。
Digital watermarking prevent forgery technique is the important way to protect copyrights.The techˉnique based on the image′s characteristic region is used overday the interested image with watermarking sigˉnal.Firstly it chooses the characteristic object by the curve track way.Secondly,as a result of the most impresˉsion on image′s lighteness change in eyes,it swings in the image′s lighteness information with watermarking by blind watermarking method.The system can pick up watermarking without original carrier image,so it not only has actural digital watermarking system′s merit,but also possesses higher counteracting cut out,counteracting circumvolve attack,etc.
出处
《国外电子元器件》
2003年第9期18-21,共4页
International Electronic Elements
