標題: | VQ-based gray watermark hiding scheme and genetic index assignment |
作者: | Wang, FH Pan, JS Jain, L Huang, HC 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
公開日期: | 2004 |
摘要: | A vector quantisation (VQ) based watermarking scheme for hiding the gray watermark is presented. It expands the watermark size, and employs VQ index assignment procedure with genetic algorithm, called genetic index assignment (GIA), for watermarking. The gray watermark is coded by VQ and obtained indices are translated into a binary bitstrearn with a much smaller size. We partition the codebook into two sub-codebooks, and use either one of them based on the value of the bit for embedding. Next, GIA is employed to find better imperceptibility of watermarked image. Experimental results show that the proposed method possesses advantages over other related methods in literature. |
URI: | http://hdl.handle.net/11536/27194 |
ISBN: | 3-540-23977-4 |
ISSN: | 0302-9743 |
期刊: | ADVANCES IN MULTIMEDIA INFORMATION PROCESSING - PCM 2004, PT 2, PROCEEDINGS |
Volume: | 3332 |
起始頁: | 73 |
結束頁: | 80 |
顯示於類別: | 會議論文 |