A New Stereo Image Watermarking Scheme based-on Adaptive Disparity Estimation Algorithm 


Vol. 27,  No. 12, pp. 1217-1225, Dec.  2002


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  Abstract

In this paper, a new stereo image watermarking scheme based-on adaptive disparity estimation algorithm is proposed. That is, a watermark image is embedded into the right image of a stereo image pair by using the conventional block-DCT operation and disparity information is extracted from this watermarked right image and the lett image. And then, both of this extracted disparity information and the left image are transmitted to the recipient through the communication channel. At the receiver, the watermarked right image is reconstructed from the received leti image and disparity information through an adaptive matching algorithm. a watermark image is finally extracted from this reconstructed right image. From some experiments using CCElT's ‘Fichier‘ and‘ Manege' images as a stereo image and English alphabet 'NRL' as a watermark image, it is found that the PSNRs of the reconstructed right images through the adaptive matching algorithm improve to 6.59dB for the 'Fichier' image and 12.28dB for the 'Manege' by comparing with those of the extracted right images through the conventional pixel-based and block-based matching algorithms and, at the same time the PSNRs of the watermark images extracted from these reconstructed righl images also improve to 2.43dB and 5.59 dB for the 'Fichier' and 'Manege' images, respectively. These experimental results also suggest a possibility of practical implementation of an adaptive matching algorithm-based stereo image watermarking scheme proposed in this paper.

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  Cite this article

[IEEE Style]

K. Jung-jin, L. Myung-han, K. Eun-soo, "A New Stereo Image Watermarking Scheme based-on Adaptive Disparity Estimation Algorithm," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 12, pp. 1217-1225, 2002. DOI: .

[ACM Style]

Kim Jung-jin, Lee Myung-han, and Kim Eun-soo. 2002. A New Stereo Image Watermarking Scheme based-on Adaptive Disparity Estimation Algorithm. The Journal of Korean Institute of Communications and Information Sciences, 27, 12, (2002), 1217-1225. DOI: .

[KICS Style]

Kim Jung-jin, Lee Myung-han, Kim Eun-soo, "A New Stereo Image Watermarking Scheme based-on Adaptive Disparity Estimation Algorithm," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 12, pp. 1217-1225, 12. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880