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Proceedings Paper

Recoverable image watermarking based on halftoning for content authentication
Author(s): Zuxi Wang; Xiangyuan Zhao; Wenzong Wang; Hanping Hu; Li Li
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Paper Abstract

In this paper, a semi-fragile watermark solution based on quantization index modulation in the wavelet region was proposed. The algorithm employs a compressed halftoned binary image as watermark and embeds it in the wavelet domain through quantization index modulation, which can not only identify the authenticity of the content of digital image, but also recover the tampered image approximately. Because the watermark is a low-resolution original image, which carries the original image information, so the original image is not required when authenticating, and the tampered region can be recovered according to the watermark. The method can tolerate a certain degree of compression distortion or noise. Beside, a secret key is used to select the embedded watermark bits and their embedded positions to increase the security of watermarking. Experimental results show this semi-fragile watermarking algorithm is effective and practical for content authentication.

Paper Details

Date Published: 30 October 2009
PDF: 8 pages
Proc. SPIE 7498, MIPPR 2009: Remote Sensing and GIS Data Processing and Other Applications, 74984N (30 October 2009); doi: 10.1117/12.848530
Show Author Affiliations
Zuxi Wang, Huazhong Univ. of Science and Technology (China)
Ministry of Education (China)
Xiangyuan Zhao, Huazhong Univ. of Science and Technology (China)
Ministry of Education (China)
Wenzong Wang, Huazhong Univ. of Science and Technology (China)
Ministry of Education (China)
Hanping Hu, Huazhong Univ. of Science and Technology (China)
Ministry of Education (China)
Li Li, Huazhong Univ. of Science and Technology (China)
Ministry of Education (China)


Published in SPIE Proceedings Vol. 7498:
MIPPR 2009: Remote Sensing and GIS Data Processing and Other Applications
Faxiong Zhang; Faxiong Zhang, Editor(s)

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