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PSIVT09-raw-wm Source Code | ||||||||||||||||||||||
This is "The Multimedia Signal Processing and Security Lab", short WaveLab, website. We are a research group at the Computer Sciences
Department of the University of Salzburg headed by Andreas Uhl. The short name "WaveLab" already indicates that wavelets are among our favorite tools - we have 15 years of experience
in this area. Our research is focused on Multimedia Security including Watermarking, Image and Video Compression, Medical Image Classification, and
Biometrics.
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Python and C code implementing and testing the raw image watermark
embedding and detection method proposed in the paper
Abstract: In this paper we investigate 'real-time' watermarking of single-sensor digital camera images (often called 'raw' images) and blind watermark detection in demosaicked images. We describe the software-only implementation of simple additive spread-spectrum embedding in the firmware of a digital camera. For blind watermark detection, we develop a scheme which adaptively combines the polyphase components of the demosaicked image, taking advantage of the interpolated image structure. Experimental results show the benefits of the novel detection approach for several demosaicking techniques. The embedding part has been implemented for the Canon IXUS 70 and Canon Powershot A720 cameras. Test images (3152x2340, 12 bpp, Canon raw format (.CRW)):
See README for details. The code is available upon request. | ||||||||||||||||||||||
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