Data hiding in ordered dithered halftone images
نویسندگان
چکیده
منابع مشابه
Hiding Data in Halftone Images
Most recent papers about visual cryptography for halftone images are dedicated to get a higher contrast decoded image. However, the hidden visual pattern often blends into the background image and leads to a confused image. In this paper, we propose an improved method for halftone image hiding. By using the proposed method, the background image can be eliminated and the hidden visual pattern ca...
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We consider applications of our recently proposed method for hiding digital data in halftone images via dot orientation modulation. As compared to prior halftone image watermarking techniques, the method allows for automated extraction of the data and relatively high capacity. These characteristics enable several new applications that we highlight in this paper. By quantifying the effective err...
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In this paper, we propose a new halftone watermarking method named Data Hiding by Dual Conjugate Error Diffusion (DHDCED) based on Data Hiding by Conjugate Error Diffusion (DHCED). Unlike DHCED, The proposed method will embed a binary secret pattern into two or more error diffused halftone images by modifying each of them. When the two halftone images are overlaid, the secret pattern will be re...
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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 a...
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Ordered dither is considered to be a simple and effective method among all halftoning techniques. In this paper, compaction of ordered dithered images using arithmetic coding is studied. A preprocessor referred to as pixel interleaving (i.e., grouping pixels with similar dithering thresholds) is employed in such a way that dithered images can be efficiently coded with the JBIG1 code and high co...
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ژورنال
عنوان ژورنال: Circuits, Systems, and Signal Processing
سال: 2001
ISSN: 0278-081X,1531-5878
DOI: 10.1007/bf01201139