Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27925
Title: Novel robust image watermarking using difference correlation detector
Authors: Lu, W
Lu, H
Chung, FL 
Keywords: Difference correlation detector
Digital image watermarking
Subsampling
Issue Date: 2007
Publisher: Elsevier Science Bv
Source: Computer standards and interfaces, 2007, v. 29, no. 1, p. 132-137 How to cite?
Journal: Computer Standards and Interfaces 
Abstract: This paper presents a robust digital image watermarking scheme based on subsampling and difference correlation. Four subimages are obtained from the host image by subsampling. A binary watermark is bit-wisely embedded in the DCT domain of two of the subimages selected by a secret key. The watermark is detected using coefficient difference correlation and does not need the original image. Since the subimages are highly correlated with each other, the proposed difference correlation detector has a better performance than a common coefficient correlation detection. Experimental results show good robustness of the proposed scheme.
URI: http://hdl.handle.net/10397/27925
DOI: 10.1016/j.csi.2006.02.002
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