Image watermarking against lens flare effects
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Publication Details
Author list: Chotikawanid P., Amornraksa T.
Publisher: Society of Photo-optical Instrumentation Engineers
Publication year: 2017
Volume number: 10225
ISBN: 9781510609518
ISSN: 0277-786X
eISSN: 1996-756X
Languages: English-Great Britain (EN-GB)
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Abstract
Lens flare effects in various photo and camera software nowadays can partially or fully damage the watermark information within the watermarked image. We propose in this paper a spatial domain based image watermarking against lens flare effects. The watermark embedding is based on the modification of the saturation color component in HSV color space of a host image. For watermark extraction, a homomorphic filter is used to predict the original embedding component from the watermarked component, and the watermark is blindly recovered by differentiating both components. The watermarked image's quality is evaluated by wPSNR, while the extracted watermark's accuracy is evaluated by NC. The experimental results against various types of lens flare effects from both computer software and mobile application showed that our proposed method outperformed the previous methods. ฉ 2017 SPIE.
Keywords
homomorphic filter, lens flare effects
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