An Improved Alpha Blending Technique in DCT&DWT domain using Image Blocking

Abstract

Digital Watermarking is an arm of data obscuring which is employed to multimedia, copyright tribute (protection). It is a technique for engrafting data into digital signal. The efficiency of watermarking summons reckon on the security of visually significant information. In this paper we employed, Alpha Blending technique on the image by sectionalize of an image into quatern quadrants. The interpolation and extraction of the watermark into gray scale cover image is recovered into less complicated way. The proposed method is compared with simple DCT & DWT method by employing statistical parameter such as PSNR, MSE, and RMSE. The observation efforts of watermark image are improved.