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Title: Data hiding in halftone images by stochastic error diffusion
Authors: Fu, Ming Sun
Au, Oscar C.
Keywords: Copy protection
Data encapsulation
Image processing
Stochastic processes
Issue Date: 2001
Citation: Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing, 2001. ICASSP '01. 7-11 May 2001, Utah, USA, v. 3, p. 1965-1968
Abstract: In this paper, we propose a novel method called DHSED to hide binary visual patterns in two error diffused halftone images. While one halftone image is only a regular error diffused image, stochastic error diffusion is applied to the other image to generate special stochastic characteristics with respect to the first image such that the visual pattern would appear when the two halftone images are overlaid. Simulation results show that the two halftone images have good visual quality, and the hidden pattern appears with 'normal' and 'lower-than-normal' intensity when the two halftone images are overlaid.
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