Blind color image watermarking method based on conic surface and reflection
Cao Wen-mingb · Jisuanji yingyong yanjiu · 2011
This paper introduced the properties of reflection and rotation in Clifford algebra and discussed some useful characteristics of the Clifford Fourier transform of the color image in 3D Clifford algebra space.In order to add watermark effectively,firstly structured a conic surface of the color image watermarking and proved the feasibility of using it to the color image watermarking.Then proposed the blind color image watermarking method based on the conic surface and reflection,which used the theory of the reflection in Clifford algebra to add the watermark to the color image,and got the watermark from the marked image without the original image.The result of the experiment shows the algorithm has good performance of the resistance to the attack of many filtering,noise,rotation and cutting,and is an effective method.