A Zero-Watermark Algorithm Based on SVD for Color Code Image
Wang Hai-ming · Computer Knowledge and Technology · 2011
Along with the coming and rapid development of 3G era,as a new bar code technology products,the color code will be increasingly well known,however,the copyright protection problems also appear.This paper proposes a zero watermark algorithm based on SVD.The original image is divided into blocks,and then the invariant properties of singular value are used to construct zero-watermark,which ensure that the watermarked image distortion free and can protect the copyright effectively.Experimental results show that the proposed algorithm is simple,effective,applicability,and is robust against common processing such as filtering,noise,JPEG compression,and cropping.