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Stereo image coding via digital watermarking

[+] Author Affiliations
Gaurav Bhatnagar

Indian Institute of Technology Roorkee, Department of Mathematics, Roorkee, 247667 India

Sanjeev Kumar

Indian Institute of Technology Roorkee, Department of Mathematics, Roorkee, 247667 India

Balasubramanian Raman

Indian Institute of Technology Roorkee, Department of Mathematics, Roorkee, 247667 India

Nagarajan Sukavanam

Indian Institute of Technology Roorkee, Department of Mathematics, Roorkee, 247667 India

J. Electron. Imaging. 18(3), 033012 (August 25, 2009). doi:10.1117/1.3210015
History: Received March 07, 2008; Revised July 03, 2009; Accepted July 08, 2009; Published August 25, 2009
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We present a robust stereo-image coding algorithm using digital watermarking in fractional Fourier transform (FrFT) and singular value decomposition (SVD). For the purpose of the security, the original (left stereo) image has been degraded and watermark (right disparity map) is embedded in the degraded image. This watermarked degraded stereo image is processed in an insecure channel. At the receiver’s end, both the watermarked image (left stereo image) and watermark images are found by the decoding process. The use of the FrFT, SVD, and degradation process of the stereo image add much more complexity to decode the information about the stereo images and disparity map extraction. Moreover, processing of the watermarked image only provides the stereo as well as 3-D information of the scene/object. Experimental results show that the proposed algorithm is efficient to achieve stereo image security.

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Citation

Gaurav Bhatnagar ; Sanjeev Kumar ; Balasubramanian Raman and Nagarajan Sukavanam
"Stereo image coding via digital watermarking", J. Electron. Imaging. 18(3), 033012 (August 25, 2009). ; http://dx.doi.org/10.1117/1.3210015


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