Image watermarking algorithm based on quaternion and singular value decomposition
Yinbo Feng · Journal of Computer Applications · 2013
A new method for embedding watermark in color image which combined Quaternion Discrete Cosine Transform(QDCT) and Singular Value Decomposition(SVD) was proposed.First of all,binary watermark was preprocessed with the help of the Arnold scrambling application and the color image was made block QDCT and SVD by using quaternion theory.Then,a number of image blocks were selected at random by Logistic mapping to realize the embedding of watermark.The experimental results show that this method has strong anti-JPEG compression as well as better robustness to various kinds of noise and filtering.