A Spatial Domain Color Watermarking Scheme based on Chaos

This paper proposes a novel spatial domain color digital watermarking scheme based on chaotic maps, and the host image is color RGB image. Using Lorenz map and the Arnold cat map encrypt the watermark signal and the embedding position of the host image each other. The color space of the color host image is first converted from RGB to YCbCr. In order to resist JPEG compression, all three watermark RGB channel signals are buried to Y component of the YCbCr color space host images. The simulation results show that the proposed color watermarking scheme can satisfy with the requirements of the invisibility and the robustness to commonly used image processing operations, such as noise addition, JPEG compression, image rotation, cropping and so on.