Radon变换修正不变矩在零水印中的应用

Zero Digital Watermarking Based on Revised Histogram Invariant Moments

提出一种使用修正后的Radon变换不变矩零水印算法。该算法的思想是先计算原始图像的Radon变换不变矩,利用其构建零水印系统;然后用参考图像和测试图像之间的相关系数来修正Radon变换不变矩,最后利用修正后的Ra-don变换不变矩来检测水印。文章的算法在满足Radon变换不变矩具有的所有性能外,能够有效抵抗常规的信号处理。经过仿真实验证明在抗噪性上鲁棒性明显优于传统的Radon变换不变矩算法。

A zero digital watermarking image using revised Radon invariant moments is proposed. Firstly calculating Radon invariant moments of original image and using the Radon invariant moments of original image to construct zero water marking system. Then correcting the Radon invariant moments of test image by related coefficient of two images. Finally the detection of watermarking system is achieved by calculating the Radon revised invariant moments. The proposed method not only has the whole performance but also can resist to commonplace signal processing. Simulation experiments demonstrate the proposed method is better robust than traditional Radon invariant moments in noise attacking.