Equalized-spectrum watermarking using perceptual modeling

Neema K. Shetty, Jeffrey J Rodriguez

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Digital image watermarking is a method of embedding a secret, imperceptible signal - a watermark - into the original image data to facilitate copy control, distribution tracking, etc. Robust watermarking schemes enable reliable verification of an imperceptible watermark, even after the watermarked content has undergone various forms of unintentional or malicious modification. The disadvantage of making a system more robust is an increase in the perceptibility of the embedded watermark. This can be overcome by using visual masking schemes that more effectively hide the watermark from the human observer. This paper presents a method that reduces the perceptibility of a robust watermarking scheme, viz. equalized-spectrum watermarking, using human visual models. The visual mask is generated using Watson's model, which is based on the block discrete cosine transform (DCT). The generated mask is applied to the watermarked image as a post-watermarking process. An existing masking equation, which is commonly used for spatial masks, was modified such that it could be used for the block-based DCT mask.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation
Pages1-5
Number of pages5
Volume2006
StatePublished - 2006
Event7th IEEE Southwest Symposium on Image Analysis and Interpretation - Denver, CO, United States
Duration: Mar 26 2006Mar 28 2006

Other

Other7th IEEE Southwest Symposium on Image Analysis and Interpretation
CountryUnited States
CityDenver, CO
Period3/26/063/28/06

Fingerprint

Watermarking
Masks
Discrete cosine transforms
Image watermarking

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition

Cite this

Shetty, N. K., & Rodriguez, J. J. (2006). Equalized-spectrum watermarking using perceptual modeling. In Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation (Vol. 2006, pp. 1-5). [1633710]

Equalized-spectrum watermarking using perceptual modeling. / Shetty, Neema K.; Rodriguez, Jeffrey J.

Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation. Vol. 2006 2006. p. 1-5 1633710.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shetty, NK & Rodriguez, JJ 2006, Equalized-spectrum watermarking using perceptual modeling. in Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation. vol. 2006, 1633710, pp. 1-5, 7th IEEE Southwest Symposium on Image Analysis and Interpretation, Denver, CO, United States, 3/26/06.
Shetty NK, Rodriguez JJ. Equalized-spectrum watermarking using perceptual modeling. In Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation. Vol. 2006. 2006. p. 1-5. 1633710
Shetty, Neema K. ; Rodriguez, Jeffrey J. / Equalized-spectrum watermarking using perceptual modeling. Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation. Vol. 2006 2006. pp. 1-5
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