Reversible fragile watermarking based on pyramidal structure and gradient predicting image

F. H. Yeh, Greg C Lee, C. C. Chiang

    研究成果: 書貢獻/報告類型會議貢獻

    摘要

    The purpose of this research lies in the development of a reversible fragile watermarking scheme that not only can restore the original image but can also both correctly identify and localize unauthorized manipulations to a protected image. The similarities among the detail components of a pyramid-structure image are exploited to select appropriate embedding areas, and then the cryptographic watermarks are embedded into selected wavelet coefficients using a difference-expansion method. No extra space is required to store the watermark information, watermarks and watermark location map. Experimental results show that the proposed scheme can successfully obtain original image if protected image is unaltered, and unauthorized manipulations can be correctly identified and localized even when protected images undergoes a cropping attack.

    原文英語
    主出版物標題Proceedings - 3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2007.
    頁面311-314
    頁數4
    1
    DOIs
    出版狀態已發佈 - 2007 十二月 1
    事件3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2007 - Kaohsiung, 臺灣
    持續時間: 2007 十一月 262007 十一月 28

    其他

    其他3rd International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2007
    國家臺灣
    城市Kaohsiung
    期間07/11/2607/11/28

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Signal Processing
    • Information Systems and Management

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