An Efficient Frame Embedding Using Haar Wavelet Coefficients And Orthogonal Component Analysis

Digital media, applications, copyright defense, and multimedia security have become a vital aspect of our daily life. Digital watermarking is a technology used for the copyright security of digital applications. In this work we have dealt with a process able to mark digital pictures with a visible and semi invisible hided information, called watermark. This process may be the basis of a complete copyright protection system. Watermarking is implemented here using Haar Wavelet Coefficients and Principal Component analysis. Experimental results show high imperceptibility where there is no noticeable difference between the watermarked video frames and the original frame in case of invisible watermarking, vice-versa for semi visible implementation. The watermark is embedded in lower frequency band of Wavelet Transformed cover image. The combination of the two transform algorithm has been found to improve performance of the watermark algorithm. The robustness of the watermarking scheme is analyzed by means of two distinct performance measures viz. Peak Signal to Noise Ratio (PSNR) and Normalized Coefficient (NC).