Journal
SIGNAL PROCESSING-IMAGE COMMUNICATION
Volume 48, Issue -, Pages 12-21Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.image.2016.09.001
Keywords
Color image; Copyright protection; Watermarking; Quaternion moment invariants; Visual cryptography
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Funding
- National Natural Science Foundation of China [61201344, 11301074, 61271312, 61601311]
- '333' project [BRA2015288]
- Qing Lan Project
- High-end Foreign Experts Recruitment Program [GDT20153200043]
- Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges under Beijing Municipality [IDHT20150507]
- Scientific Research Base Development Program of the Beijing Municipal Commission of Education [TJSHG201310028014]
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This paper introduces a novel robust watermarking scheme for copyright protection of color image based on quaternion-type moment invariants and visual cryptography. As a secure way to allow secret sharing of images, visual cryptography realizes encryption of classified information and the decryption is performed through human visual system. The proposed scheme represents the color image into a quaternion matrix, so that it can deal with the multichannel information in a holistic way. Then the quaternion moments are applied to extract the invariant features, which are crucial to generate the master share. Together with the scrambled watermark, they are used for constructing the ownership share based on visual cryptography. Afterwards, the ownership share is registered and responsible for authentication. A set of experiments has been conducted to illustrate the validity and feasibility of the proposed scheme as well as better robustness against different attacks. (C) 2016 Elsevier B.V. All rights reserved.
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