Image Watermarking using Wavelet Transform and Human Visual System

웨이블릿 변환 및 인간 시각 시스템을 이용한 원문 워터마킹

  • 김상국 (한국과학기술정보연구원 정보표준화실) ;
  • 김태중 (한국과학기술정보연구원 정책마케팅부) ;
  • 황재호 (수원여자대학 컴퓨터응용학부) ;
  • 이재광 (한남대학교 컴퓨터공학과)
  • Published : 2004.09.01

Abstract

As multimedia data and their applications are rapidly distributed on the Web, the research on watermark insertion and integrity assurance vigorously increases. In this paper, Discrete Wavelet Transformation dissolves an original image into the three level of low, middle, and high bandwidths. Human Visual System with the significant coefficients extracted from the middle obtains enhanced image quality and robustness using watermark insertion. Experimental results show that various attacks cannot destroy pre-inserted watermark and recovered image is of good quality by measuring PSNR.

Keywords

Wavelet Transform;HVS;Watermarking