Discrete Walsh Hadamard Transform Based Visible Watermarking Technique for Digital Color Images
Abstract - As the size of the Internet is growing enormously the illegal manipulation of digital multimedia data become very easy with the advancement in technology tools. In order to protect those multimedia data from unauthorized access the digital watermarking system is used. In this paper a new Discrete walsh Hadamard Transform based visible watermarking system is proposed. As the watermark is embedded in transform domain, the system is robust to many signal processing attacks. Moreover in this proposed method the watermark is embedded in tiling manner in all the range of frequencies to make it robust to compression and cropping attack. The robustness of the algorithm is tested against noise addition, cropping, compression, Histogram equalization and resizing attacks. The experimental results show that the algorithm is robust to common signal processing attacks and the observed peak signal to noise ratio (PSNR) of watermarked image is varying from 20 to 30 db depends on the size of the watermark.
Digital Watermarking Transform based Watermarking Hadamard Transform watermarking Information Hiding Color image watermarking, Visible atermarking
V.Santhi Arunkumar Thangavelu
School of Computing Science and Engineering VIT University Vellore - Tamil Nadu - India
国际会议
2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)
长沙
英文
583-587
2010-12-14（万方平台首次上网日期，不代表论文的发表时间）