Usage of different color models in robust digital watermarking

Digital watermarking represents a potential effective method for authentication and ownership rights protection in all kind of multimedia. Digital watermark is hidden information added into the content of multimedia. This paper presents one watermarking method for the color images robust against geometrical attacks. The detailed description of this method is given and some experiments by using the set of different attacks are performed. In experiment different color models were used and in experiments advantages and drawbacks of these color models were tested.