A color image watermarking algorithm resistant to print-scan

Chengqing Guo, Guoai Xu, Xinxin Niu, Yixian Yang, Yang Li
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引用次数: 15

Abstract

Print-scan resilient data hiding finds important applications in image copyright protection. This paper proposes a novel algorithm which combines the methods of image complexity and discrete Fourier transform (DFT). Based on appropriate block partition, we can compute the local image complexity of the block, which is determined whether to embed watermark in this block. The red component of the block is transformed with DFT and a watermark is embedded in the mid-frequency of DFT coefficients. The hidden data can be extracted without using the original image to verify the copyright of the reproduced image. Experiment results suggest that the proposed method is robust after high-quality printing and scanning.
一种抗打印扫描的彩色图像水印算法
打印扫描弹性数据隐藏在图像版权保护中有着重要的应用。本文提出了一种结合图像复杂度和离散傅里叶变换(DFT)方法的新算法。通过适当的块划分,计算块的局部图像复杂度,从而决定是否在该块中嵌入水印。用DFT变换块的红色分量,在DFT系数的中频处嵌入水印。可以在不使用原始图像的情况下提取隐藏数据,以验证复制图像的版权。实验结果表明,该方法在高质量打印和扫描后具有良好的鲁棒性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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