Journal of Applied Sciences ›› 2016, Vol. 34 ›› Issue (6): 677-690.doi: 10.3969/j.issn.0255-8297.2016.06.004

• Signal and Information Processing • Previous Articles     Next Articles

Optimal Self-Embedding Scheme Based on Recovery-Data Sharing

WANG Hui-li, QIN Chuan, GAO Li-ping, CHEN Qing-kui   

  1. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2016-03-16 Revised:2016-05-01 Online:2016-11-30 Published:2016-11-30

Abstract:

This paper proposes a self-embedding fragile watermarking scheme for image tampering detection and recovery based on variable recovery-data sharing. The generated watermark bits in each image block are composed of recovery bits derived from the interleaved, and scrambled MSB bits of original image and authentication bits derived from the recovery bits and MSB bits. Different from the reported methods using a fixed embedding mode, the proposed scheme has two types of embedding modes, i.e., overlapping embedding and overlapping-free embedding, and uses variable numbers of MSB layers and recovery bits. One can choose an optimal embedding mode to achieve better quality of watermarked image and better performance of content recovery. Experimental results show flexibility and superiority of the scheme as compared with other reported methods.

Key words: recovery-data sharing, fragile watermarking, tampering recovery, self-embedding

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