Image Watermark Algorithm for Copyright Protection Based on Human Visual System
The growth of new image technologies has created a need for techniques that can be used for copyright protection of digital images, video and audio. One approach for copyright protection is to introduce an invisible signal, known as a digital watermark, into an image or video sequence. Wavelet-based watermark exploit the frequency and spatial of the transformed data in multiple resolutions to gain robustness. Although the human visual model offers imperceptibility in wavelet watermark, it suffers high computational cost In this paper we present a new algorithm to reduce the computational time while preserving the performance of imperceptibility and robustness. Moreover, the watermark is encrypted by magic square algorithm in order to improve security.
image watermark copyright protection Human visual system
Cong Jin Shu-Wei Jin
Department of Computer Science Central China Normal University Wuhan 430079 P.R.China The School of Physics & Technology Wuhan University Wuhan 430072 P.R.China
国际会议
西安
英文
64-67
2010-08-07（万方平台首次上网日期，不代表论文的发表时间）