Visible digital watermarking system using perceptual models

Qiang Cheng; Thomas S. Huang

doi:10.1117/12.420830

22 March 2001 Visible digital watermarking system using perceptual models

Qiang Cheng, Thomas S. Huang

Author Affiliations +

Proceedings Volume 4209, Multimedia Systems and Applications III; (2001) https://doi.org/10.1117/12.420830
Event: Information Technologies 2000, 2000, Boston, MA, United States

Abstract

This paper presents a visible watermarking system using perceptual models. %how and why A watermark image is overlaid translucently onto a primary image, for the purposes of immediate claim of copyright, instantaneous recognition of owner or creator, or deterrence to piracy of digital images or video. %perceptual The watermark is modulated by exploiting combined DCT-domain and DWT-domain perceptual models. % so that the watermark is visually uniform. The resulting watermarked image is visually pleasing and unobtrusive. The location, size and strength of the watermark vary randomly with the underlying image. The randomization makes the automatic removal of the watermark difficult even though the algorithm is known publicly but the key to the random sequence generator. The experiments demonstrate that the watermarked images have pleasant visual effect and strong robustness. The watermarking system can be used in copyright notification and protection.

Citation Download Citation

Qiang Cheng and Thomas S. Huang "Visible digital watermarking system using perceptual models", Proc. SPIE 4209, Multimedia Systems and Applications III, (22 March 2001); https://doi.org/10.1117/12.420830

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KEYWORDS

Digital watermarking

Discrete wavelet transforms

Video

Visualization

Wavelets

Digital imaging

Systems modeling

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