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Proceedings Paper

Copyright protection of images using human visual masking on DCT-based watermarking
Author(s): Yuttapong Rangsanseri; Punya Thitimajshima
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Paper Abstract

In this paper a new watermarking algorithm for digital images operating in the frequency domain is presented: a sequence of pseudo-random real numbers is embedded in a selected set of DCT coefficients. After embedding, the watermark is adapted to the image to be signed by exploiting the masking characteristics of the Human Visual System in order to achieve watermark invisibility without diminishing its robustness. Experimental results demonstrate that the watermark is robust to several signal processing techniques and geometric distortions, including JPEG compression, low pass and median filtering, histogram equalization and stretching, Gaussian noise addition and cropping.

Paper Details

Date Published: 11 March 2002
PDF: 7 pages
Proc. SPIE 4739, Applications and Science of Computational Intelligence V, (11 March 2002); doi: 10.1117/12.458714
Show Author Affiliations
Yuttapong Rangsanseri, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Punya Thitimajshima, King Mongkut's Institute of Technology Ladkrabang (Thailand)

Published in SPIE Proceedings Vol. 4739:
Applications and Science of Computational Intelligence V
Kevin L. Priddy; Paul E. Keller; Peter J. Angeline, Editor(s)

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