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http://dx.doi.org/10.5909/JBE.2019.24.6.1152

SIFT Feature Based Digital Watermarking Method for VR Image  

Moon, Won-Jun (Department of Electronic Materials Engineering, Kwangwoon University)
Seo, Young-Ho (Department of Electronic Materials Engineering, Kwangwoon University)
Kim, Dong-Wook (Department of Electronic Materials Engineering, Kwangwoon University)
Publication Information
Journal of Broadcast Engineering / v.24, no.6, 2019 , pp. 1152-1162 More about this Journal
Abstract
With the rapid development of the VR industry, many VR contents are produced and circulated, and the need for copyright protection is increasing. In this paper, we propose a method of embedding and extracting watermarks in consideration of VR production process. In embedding, SIFT is performed by selecting the region where distortion is minimized in VR production, and transformed into frequency domain using DWT and embedded into the QIM method. In extracting process, in order to correct the distortion in the projection process, the top and bottom regions are changed to different projection methods and some middle regions are rotated using 3DoF to extract the watermark. After this processing, extracted watermark has higher accuracy than the conventional watermark method, and the validity of the proposed watermark is shown by showing that the accuracy is maintained even in various attacks.
Keywords
virtual reality; watermark; degree of freedom; SIFT; projection;
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Times Cited By KSCI : 2  (Citation Analysis)
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