Dispersed Error Control based on Error Filter Design for Improving Halftone Image Quality
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چکیده
The error diffusion method generates worm artifacts, and weakens the edge of the halftone image when the continuous gray scale image is reproduced by a binary image. First, to enhance the edges, we propose the edge-enhancing filter by considering the quantization error information and gradient of the neighboring pixels. Furthermore, to remove worm artifacts often appearing in a halftone image, we add adaptively random noise into the weights of an error filter. Keywords—Artifact suppression, Edge enhancement, Error diffusion method, Halftone image
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