Resisting geometric attacks image watermarking algorithm based on object
基于对象的抗几何攻击的图像水印算法

This paper proposed a watermarking algorithm based on objects which could resist geometric attacks.The algorithm utilized geometric matrix affine transformation. In order to decrease the modification of original image,firstly extracted the important objects in an image,then embedded the watermarking into them.The watermarking was embedded centroid-symmetrically to alleviate the effect of watermarking on affine coefficients, and also improved the robust to geometric attacks.Experimental results show that the proposed algorithm can make the embedded watermarking invisible and robust, and the algorithm also resists to various attacks such as background cropping, rotation, scale, translation etc.