Color image authentication with tamper detection and remedy based on BCH and Bayer Pattern

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• 作者：Chih-Hung Lin^a ; Tzung-Her Chen^b ; ^{thchen@mail.ncyu.edu.tw} ; Chun-Wei Chiu^b
• 关键词：Image authentication ; Tamper detection ; Tamper remedy ; BCH ; Bayer Pattern
• 刊名：Displays
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：34
• 期：1
• 页码：59-68
• 全文大小：1538 K

文摘

This paper proposes a new color image authentication scheme, aiming at tamper detection and recovery, based on error correction coding and Bayer Pattern. The bit stream generated by coding an image block with BCH (15, 7) is treated as the authentication information while the Bayer Pattern technique is adopted to achieve tamper remedy. The service of tamper remedy is valuable in saving the bandwidth of image re-transmitting, seldom addressed in existing image authentication schemes. The experimental results show the performance in sensitive integrity detection, accurate localization and imperceptible remedy. Security of image authentication techniques is achieved only when the false positive/negative probability is taken into consideration as well as guaranteeing detection, localization and remedy. In the end, the security of the present scheme is analyzed.