A Robust Image Watermarking Method Based on Adaptive Feature Points Detection

This paper presents a new image watermarking method that is robust against geometric attacks. The proposed method embeds the imperceptible watermarks in a triangle in the spatial domain. The vertexes of the triangle are found by the modified Harris corner detection. In order to get the most robust points, we use the adaptive threshold to work on various possible attacked images. The points passed all the challenges are chosen to be vertexes of the triangle. Watermark is also used to enhance the strength of vertexes. The embedding strength of the watermark depends on the local variance of each pixel. Experimental results demonstrate that the proposed scheme is able to withstand a variety of attacks