基于特征点集的水印几何失真校验方法

A Geometrical Distortions Correction Method of Watermarking Based on Feature Points Set

本文提出了一种基于特征点集的数字水印几何失真校验方法。算法利用隐秘图像受攻击前后的小波分解的低频子图的特征点几何集来估计几何失真。实验证明,算法性能稳定、精度高、可校正大强度几何失真。

The paper presents a novel geometrical distortions correction method based on feature points of digital watermarking. The method corrects the geometrical distortions by the feature points＇ geometry sets of the watermarked image. The experiments prove that the algorithm has stable and precise performance, and can correct highly intense geometric distortions.