A New Colour Image Watermarking Technique Using Special Domain

Abstract

Safeguarding the due rights of multimedia property ownership has recently emerged as a significant challenge to players in this sphere. In response to this issue, a robust colour image watermarking algorithm utilizing a block probability in a spatial domain is recommended by this study. The protection of the watermark is fortified through the employment of the Arnold transform to scramble watermark pixels. Decomposition of the cover image into Red, Green, and Blue channels is executed and the green channel is favoured for the embedding procedure. The reorganization of the scrambled watermark is achieved with the utilization of sequence numbers generated by a secret key. Four embedding's of the encoded watermark are carried out at separate points in the green channel of the colour image. The embedding of all the bits of the binary encrypted watermark is realized by regulating the strengths of a non-overlapping 8x8 sized component of the cover image green channel. The watermark extraction procedure involves a comparison between the strengths of an 8x8 sized component of the initial and watermarked images as well as calculations to uncover the likelihood of recognizing (0 or 1). The algorithm design was deemed invulnerable and exhibited robustness when confronted with a substantial number of image processing onslaughts.