Reversible color transmission of compressed fragment-visible mosaic image

This paper presents Reversible Color Transmission of Compressed Fragment -Visible Mosaic Image of the same size for hiding the secret image. By applying the digital watermarking on mosaic image using DWT and PCA transformation increase the security, authentication, copyright protection and all types of internet applications. Most commonly used methods of watermarking are discrete cosine transform (DCT), discrete wavelet transform (DWT).A hybrid digital image watermarking scheme based on Discrete Wavelet Transform (DWT) and Principal Component Analysis (PCA). These transform domain technique provides criteria of imperceptibility as well as robustness than Discrete Cosine Transform and Discrete Wavelet Transform. The proposed method, originally designed for dealing with color images. An additional approach here is used to enhance the embedded watermark data security is also proposed. The proposed scheme is tested using a number of images. Experimental result shows no visible difference between the recovered secret image and original secret image. It also calculated RMSE, MSSIM, PSNR and NC values of the watermarked image which give good result than previous method. Good experimental results show the quality of being doable of the proposed method.