New watermarking scheme for colour image

摘要

This paper deals with a new watermarking scheme in the time domain. The method tested follows up on a method that was presented in [1]. Compared with the method from [1] there are some changes in the new one, which improve the detection and extraction process. The watermark is embedded into the red and green components of a colour image. This has, on the one hand, an effect on the quality of watermarked image; on the other hand it increases the possibility of extracting the watermark even from very modified images.