科研之友
微信
新浪微博
Facebook
分享链接
摘要
In this paper, we propose a new scheme that uses block-related index and three types of coefficient-scan strategy in image authenticating and recovering. Blockrelated authenticating information makes the feature codes tolerant in compression processes. Besides, a block-classification method is used for classifying blocks into flat, vertical-detailed or horizontal-detailed types. With that, a useful coefficient-scan strategy is chosen for preserving and recovering block information. As the experimental results, the watermarked image can provide a PSNR higher than 40.00dB and can mark and recover the blocks which could be maliciously tampered with.
- 出版日期2007-10
