A novel least distortion linear gain model for halftone image watermarking incorporating perceptual quality metrics

Jiang, W, Ho, ATS and Treharne, H (2009) A novel least distortion linear gain model for halftone image watermarking incorporating perceptual quality metrics

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Abstract

In this paper, a least distortion approach is proposed for halftone image watermarking. The impacts of distortion and tonality problems in halftoning are analyzed. An iterative linear gain model is developed to optimize perceptual quality of watermarking halftone images with efficient computation complexity O(1). An optimum linear gain for data hiding error diffusion is derived and mapped into a standard linear gain model, with the tonality evaluated using the average power spectral density. As compared with Fu and Au’s data hiding error diffusion method, our experiments show that our proposed linear gain model can achieve an improvement of between 6.5% to 12% using weighted signal-to-noise ratio (WSNR) and an improvement of between 11% to 23% measured by visual image fidelity (VIF).

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Authors :	Authors Email ORCID Jiang, W UNSPECIFIED UNSPECIFIED Ho, ATS UNSPECIFIED UNSPECIFIED Treharne, H UNSPECIFIED UNSPECIFIED
Date :	2009
Identification Number :	https://doi.org/10.1007/978-3-642-01757-5_4
Depositing User :	Symplectic Elements
Date Deposited :	28 Mar 2017 14:42
Last Modified :	28 Mar 2017 14:42
URI:	http://epubs.surrey.ac.uk/id/eprint/532121

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