Reversible Color Image Watermarking Using Trigonometric Functions

In this present work, we propose a new reversible color image watermarking technique, using trigonometric functions. The proposed method embeds secret bits into the gray planes of color image, using interpolation method and few trigonometric functions. Experimental results presented in this paper shows that the watermark can be successfully embedded and extracted from an image, without distorting the original image using the proposed technique. The high Peak Signal to Noise Ratio (PSNR) values claims the robustness of the proposed method.