The great success of internet that allows the transmission, very wide distribution and access of digital data in an easy manner. Content providers are faced with the challenge to protect their digital data. Digital watermarking has been proposed as a technology to ensure copyright protection by embedding an imperceptible, yet detectable signal in visual multimedia content such as images or video. Watermark detection is an integral component of a watermarking system. The challenge here is to introduce the digital watermark such that the perceived quality of the digital content remains unaltered as well as robust to different types of attacks.