Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/69117
標題: A hierarchical digital watermarking method for image tamper detection and recovery
作者: Lin, P.L.
黃博惠
Hsieh, C.K.
Huang, P.W.
關鍵字: image authentication
tamper detection
tamper localization
digital
watermarking
authentication
期刊/報告no:: Pattern Recognition, Volume 38, Issue 12, Page(s) 2519-2529.
摘要: In this paper, we present an efficient and effective digital watermarking method for image tamper detection and recovery. Our method is efficient as it only uses simple operations such as parity check and comparison between average intensities. It is effective because the detection is based on a hierarchical structure so that the accuracy of tamper localization can be ensured. That is, if a tampered block is not detected in level-1 inspection, it will be detected in level-2 or level-3 inspection with a probability of nearly 1. Our method is also very storage effective, as it only requires a secret key and a public chaotic mixing algorithm to recover a tampered image. The experimental results demonstrate that the precision of tamper detection and localization is 99.6% and 100% after level-2 and level-3 inspection, respectively. The tamper recovery rate is better than 93% for a less than half tampered image. As compared with the method in Celik et al. [IEEE Trans. Image Process. 11(6) (2002) 585], our method is not only as simple and as effective in tamper detection and localization, it also provides with the capability of tamper recovery by trading off the quality of the watermarked images about 5 dB. (c) 2005 Pattern Recognition Society. Published by Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/11455/69117
ISSN: 0031-3203
文章連結: http://dx.doi.org/10.1016/j.patcog.2005.02.007
Appears in Collections:理學院

文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.