【作者】 杨俊； 张贵仓；

【Author】 Jun Yang, Guicang Zhang(Department of Information and Computing Science, Northwest Normal University, Lanzhou Gansu 730070;

【机构】 西北师范大学信息与计算科学系；

【摘要】 提出了一种将彩色数字水印嵌入到原始彩色数字图像中的算法。采用了离散小波变换与人类视觉系统相结合的方法,使嵌入水印后图像无主观失真;在RGB原始图像中冗余嵌入转换为YCrCb彩色水印图像来增强鲁棒性。仿真试验验证了该算法的有效性,对如叠加噪声、JPEG压缩、几何剪切、图像增强、马赛克效果等攻击表现出较好的鲁棒性。更多还原

【Abstract】 This paper presented a technique by embedding a color digital watermarking into an original color image. Changed the color space of the watermarking image to YCrCb color space, utilized the HVS peculiarity to select the pixels of different high frequency bands after DWT and inserts redundantly the low frequency band of the watermarking image after one level DWT. This method reduced the visual distortion and enhanced the robustness in the result. Experimental results show that the scheme is invisible and with attacks such as compression, filtering, noise adding, image enhancement, obtaining results of good robustness.更多还原