Fragile Watermarking With Error-Free Restoration Capability
Fragile Watermarking With Error-Free Restoration Capability
复制标题
具有无差错恢复能力的脆弱水印
DOI：
10.1109/tmm.2008.2007334
复制
发表时间：
2008-12-01
影响因子：
7.3
通讯作者：
Wang, Shuozhong
中科院分区：
文献类型：
--
作者：
Zhang, Xinpeng;Wang, Shuozhong
本文提出了一种新颖的脆弱水印方案，能够从其篡改版本中完美恢复原始图像。在该方案中，使用无损数据隐藏方法将量身定制的水印嵌入到主机图像中。在接收器侧，通过比较提取的和计算出的检查位，可以识别篡改的图像块。然后，从其他块中提取的可靠参考位用于精确重建原始图像。尽管内容更换可能会破坏嵌入式水印数据的一部分，但只要篡改区域不太广泛，就可以恢复原始图像信息而不会出错。
This paper proposes a novel fragile watermarking scheme capable of perfectly recovering the original image from its tampered version. In the scheme, a tailor-made watermark consisting of reference-bits and check-bits is embedded into the host image using a lossless data hiding method. On the receiver side, by comparing the extracted and calculated check-bits, one can identify the tampered image-blocks. Then, the reliable reference-bits extracted from other blocks are used to exactly reconstruct the original image. Although content replacement may destroy a portion of the embedded watermark data, as long as the tampered area is not too extensive, the original image information can be restored without any error.