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National Chung Hsing University Institutional Repository - NCHUIR > 理學院 > 理學院 > 依資料類型分類 > 期刊論文 >  A hierarchical digital watermarking method for image tamper detection and recovery

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/133571

標題: A hierarchical digital watermarking method for image tamper detection and recovery
作者: Lin, P.L.;Hsieh, C.K.;Huang, P.W.
關鍵字: image authentication;tamper detection;tamper localization;digital;watermarking;authentication
日期: 2005
Issue Date: 2012-12-14 10:04:10 (UTC+8)
關連: 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.
Relation: Pattern Recognition
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 黃博惠
[依教師分類] 黃博惠

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