Probability-based reversible image authentication scheme for image demosaicking |
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| Affiliation: | 1. Department of Computer Science and Information Management, Providence University, 200, Sec. 7, Taiwan Boulevard, Shalu Dist., Taichung City 43301, Taiwan, ROC;2. Department of Computer Science and Information Engineering, Providence University, 200 Chung Chi Rd., Taichung 43301, Taiwan, ROC;1. ENS Rennes, IRISA, Rennes, France;2. Argonne National Laboratory, IL 60439, USA;3. Inria Rennes - Bretagne Atlantique, France;4. CNRS, IRISA, Rennes, France;1. Xi’an Jiaotong Liverpool University, Suzhou, China;2. Leeds Beckett University, UK;3. University of Southampton, UK;4. IBM, United States;5. Massey University, New Zealand;1. Department of Computer Applications, Haldia Institute of Technology, HIT Campus, Hatiberia, Haldia, Purba Medinipur, West Bengal, India;2. Department of Computer Science, Vidyasagar University Midnapore, West Bengal, India;3. Dept. of Computer Science and Engineering, National Institute of Technology, Durgapur, West Bengal, India;1. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;2. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China |
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| Abstract: | In this paper, we propose a novel image authentication scheme to detect the tampered areas for image demosaicking with the reversibility preserving property. Image demosaicking is the process of reconstructing an RGB color image from the sampled data acquired by the digital camera that applies a color filter array to a single sensor. In the proposed scheme, the authentication data is embedded into the rebuilt components of the demosaicked pixels.From the results, it is shown that good image qualities of the embedded images are obtained by using the proposed scheme. When the illegal users modified the contents of the embedded images, the tampered areas in the modified images can be clearly detected by using the proposed scheme. The demosaicked images can be losslessly recovered if no modifications are done on the embedded images. The proposed authentication codes embedding process can be implemented by hardware in single sensor digital camera. Furthermore, the proposed scheme can be extended to protect the image integrity for cloud computing environments. |
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| Keywords: | Image authentication Tamper detection Bayer pattern Color filter array Image demosaicking Reversibility |
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