An imperceptible Transform Domain Based Digital Image Watermarking Scheme with YUV color soace

Digital image watermarking is the process for data hiding and provides extension of maximum
security from unauthorized persons. This paper proposed an imperceptible transform domain based digital image
watermarking scheme with YUV color space. Initially the RGB (Red, Green & Blue) cover image is converted into
YUV model then performs Hadamard transform (HT) on Y (Luminance) component to obtain coefficient values of
those images. The second step is perform embedding process in between Y coefficient values and watermark
image with help of scaling factor (α) to obtain new Y components. Last step is to obtain watermarked image
after applying the inverse Hadamard transform and also conversion of YUV to RGB. Finally to extract the
watermark image without any distortions at receiver side after performing reverse embedding process . The
experiment results provide better values than the existing ones using quality factors like Peak Signal to Noise Ratio
(PSNR), Mean square error (MSE), Similarity measures (SSIM) and normalized cross correlation (NCC).