Reversible watermarking using statistical information

Authors:
Ahmad Mahmoudi Aznaveh;Farah Torkamani-Azar;Azadeh Mansouri;Fatih Kurugollu
Affiliations:
Electrical & Computer Engineering Faculty, Shahid Beheshti University, Tehran, Iran;Electrical & Computer Engineering Faculty, Shahid Beheshti University, Tehran, Iran;Electrical & Computer Engineering Faculty, Shahid Beheshti University, Tehran, Iran;The Institute of Electronics, Communications and Information Technology, Queen's University Belfast, Belfast, UK
Venue:
EURASIP Journal on Advances in Signal Processing - Special issue on advanced image processing for defense and security applications
Year:
2010

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Abstract

In most reversible watermarking methods, a compressed locationmap is exploited in order to ensure reversibility. Besides, in some methods, a header containing critical information is appended to the payload for the extraction and recovery process. Such schemes have a highly fragile nature; that is, changing a single bit in watermarked data may prohibit recovery of the original host as well as the embedded watermark. In this paper, we propose a new scheme in which utilizing a compressed location map is completely removed. In addition, the amount of auxiliary data is decreased by employing the adjacent pixels information. Therefore, in addition to quality improvement, independent authentication of different regions of a watermarked image is possible.