Image Halftoning and Inverse Halftoning for Optimized Dot Diffusion

The dot diffusion method for digital halftoning has the advantage of parallelism unlike the error diffusion method. However, image quality offered by error diffusion is still regarded as superior to other known methods. In a recent paper we showed how the dot diffusion method can be improved by opti...

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Main Authors: Mese, Murat, Vaidyanathan, P. P
Format: Report
Language:English
Subjects:
ALGORITHMS
COMPOSITE IMAGES
Cybernetics
GRAY SCALE
IMAGE PROCESSING
NEURAL NETS
PHOTOGRAPHIC SCALE
PIXELS
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Vaidyanathan, P. P
description The dot diffusion method for digital halftoning has the advantage of parallelism unlike the error diffusion method. However, image quality offered by error diffusion is still regarded as superior to other known methods. In a recent paper we showed how the dot diffusion method can be improved by optimization of the so called class matrix. In this paper we first review the dot diffusion algorithm and the optimization of the class matrix. A method for inverse halftoning of dot diffused images is then proposed. The method uses wavelet decomposition to eliminate the halftoning noise and does not make use of the knowledge of the class matrix.
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subjects ALGORITHMS
COMPOSITE IMAGES
Cybernetics
GRAY SCALE
IMAGE PROCESSING
NEURAL NETS
PHOTOGRAPHIC SCALE
PIXELS
title Image Halftoning and Inverse Halftoning for Optimized Dot Diffusion
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