New color image blind watermarking algorithm
LI Yan-shan · Jisuanji yingyong yanjiu · 2011
This paper proposed a new color image blind watermarking technology which used the properties of the quaternion matrix. It represented the image in the form of quaternion matrix with the considering the multi-channel characteristic of color image. Then discussed many important properties of quaternion matrix singular value decomposition with several experiments to find the best field to embed the watermarking information. Fortunately, the field of QSVD transformation was very feasible to carry the watermark information. Then depicted a blind watermarking algorithm which used the conjugate and rotation to embed the watermarking information into the field of QSVD transformation. The experimental results indicate that the algorithm has good performance under many attacks.