An Energy-Based Watermarking Algorithm for Digital Images

디지털 영상을 위한 에너지 기반 워터마킹 알고리즘

  • 최동진 (충북대학교 컴퓨터공학과) ;
  • 황동국 (백석대학 컴퓨터정보학과) ;
  • 이상주 (충북대학교 컴퓨터공학과) ;
  • 이우람 (충북대학교 컴퓨터공학과) ;
  • 전병민 (충북대학교 컴퓨터공학과)
  • Published : 2005.04.01

Abstract

In this paper, we present a new watermarking algorithm in which a watermark is created based on the energy of the original image and embedded into the image by replacement. The watermark is adjusted to have a certain proportional amount of energy based on one of the original image and embedded into the DFT magnitude component replacing original coefficients. This scheme reduces degree of quality degradation in a watermarked image by maintaining energy and strengthen robustness against attacks by embedding a strong watermark. From the result of experiment, we confirmed that the proposed algorithm had high invisibility of 47.6dB of PSNR and could reconstruct 98.9% of message on average.

Keywords

Watermarking;Blind Detection;Energy;Copyright