SVD Based Digital Watermarking Algorithm
Zhigang Hu · Jisuanji gongcheng · 2003
Digital watermarking represents a new valid solution to the copyright protection. An algorithm based on SVD is proposed in this paper. According to some properties, of SVD, each singular value (SV) specifies the luminance of the SVD image layer, whereas the respective pair of singular vectors specifies image geometry. Therefore slight variations of SVs cannot effect the visual perception. The proposed algorithm is based on embedding one bit data through slight modifications of SVs of a small block of the segmented covers. An advantage of the algorithm is that it is blind.