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Proceedings Paper

Automatic visible watermarking of images
Author(s): A. Ravishankar Rao; Gordon W. Braudaway; Frederick C. Mintzer
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Paper Abstract

Visible image watermarking has become an important and widely used technique to identify ownership and protect copyrights to images. A visible image watermark immediately identifies the owner of an image, and if properly constructed, can deter subsequent unscrupulous use of the image. The insertion of a visible watermark should satisfy two conflicting conditions: the intensity of the watermark should be strong enough to be perceptible, yet it should be light enough to be unobtrusive and not mar the beauty of the original image. Typically such an adjustment is made manually, and human intervention is required to set the intensity of the watermark at the right level. This is fine for a few images, but is unsuitable for a large collection of images. Thus, it is desirable to have a technique to automatically adjust the intensity of the watermark based on some underlying property of each image. This will allow a large number of images to be automatically watermarked, this increasing the throughput of the watermarking stage. In this paper we show that the measurement of image texture can be successfully used to automate the adjustment of watermark intensity. A linear regression model is used to predict subjective assessments of correct watermark intensity based on image texture measurements.

Paper Details

Date Published: 1 April 1998
PDF: 12 pages
Proc. SPIE 3314, Optical Security and Counterfeit Deterrence Techniques II, (1 April 1998); doi: 10.1117/12.304677
Show Author Affiliations
A. Ravishankar Rao, IBM Thomas J. Watson Research Ctr. (United States)
Gordon W. Braudaway, IBM Thomas J. Watson Research Ctr. (United States)
Frederick C. Mintzer, IBM Thomas J. Watson Research Ctr. (United States)


Published in SPIE Proceedings Vol. 3314:
Optical Security and Counterfeit Deterrence Techniques II
Rudolf L. van Renesse, Editor(s)

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