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Optical Engineering

Novel and robust saturation watermarking in wavelet domains for color images
Author(s): Ping Sheng Huang; Chung-Shi Chiang
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Paper Abstract

Human visual systems are insensitive to slight saturation changes in a color image. This paper presents a novel watermarking approach by hiding grayscale logos in the saturation component of color images. The embedding procedures are first performed in the DWT domains of the achromatic component. Then a proposed technique of saturation adjustment is applied to redirect the marks into the saturation component. To improve the detection robustness, we propose an adaptive weighting scheme to fuse the extracted watermarks in the extraction stage. Experimental results demonstrate that the proposed approach can successfully make the watermark perceptually invisible and robust to image-processing operations such as low-pass filtering, JPEG, scaling and cropping under StirMark, and JPEG-2000. Robustness can be provided in the applications of copy protection and digital archives.

Paper Details

Date Published: 1 November 2005
PDF: 15 pages
Opt. Eng. 44(11) 117002 doi: 10.1117/1.2128416
Published in: Optical Engineering Volume 44, Issue 11
Show Author Affiliations
Ping Sheng Huang, Chung Cheng Institute of Technology (Taiwan)
Chung-Shi Chiang, Chung Cheng Institute of Technology (Taiwan)

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