Image Watermarking Based on Video Series Against Shearing

In this paper, we introduce a robust watermark scheme against shearing attack for digital images based on video series wavelet transform. Based on the characteristics of the image theory and human visual system, the proposed method make use of the there-dimensional video wavelet transform to split the image to a sense of image videos and the watermark is adaptively weighed to the different positions of the middle frequency region. The method makes use of the characteristics of image 2D wavelet transform and the personpsilas sense of vision and shows excellent advantage against shearing attack. The method could show the watermark clearly when more than half of the image has been cut. Experimental results show this method excellent robustness for image shearing. The goal of this paper is to achieve robust digital image watermark against shearing. The algorithm performs well in StirMark test and is robust to geometrical attacks.