A channel wise color image watermarking scheme based on Discrete Wavelet Transformation

Digital watermarking being a potential mechanism of information security has received a lot of attention from researchers over the last few decades and accordingly has undergone a thorough research. Number of methods and techniques have been proposed and implemented so far. The host values chosen and the way the watermark is being embedded are two important factors that determine the effectiveness of the technique. This paper presents a novel channel wise watermarking technique for protection of copyrights of color images using Discrete Wavelet Transformation. The results obtained have shown that the technique is a secure one and is robust against various common image processing attacks.