Author : P.Nancy Jothibai 1
Date of Publication :31st December 2017
Abstract: The rapid spread of the internet, accompanied by the comprehensive development of digital technologies and easily reproduced digital media, has increased the popularity of such media. The current challenge is how to protect the ownership of digital products while allowing the full usage of internet resources. Digital watermarking has been suggested as a way to achieve digital protection. The purpose of digital watermarking is to insert the secret data into the image without significantly affecting the visual quality. The authenticity & copyright protection are two major problems in handling digital multimedia. The Image watermarking is the most popular method for copyright protection by Wavelet Packet Transform (WPT) which performs 3 Level Decomposition of original (cover) image and watermark image is embedded in Lowest Level (LL) sub band of the cover image. Inverse WPT is used to recover the original image from watermarked image. The fingerprint is used as a biometric key.