D 2014-02-02T19:11:38.582
L Dithering
P 216d1b01bb2835433ca0b0944d97b2701bb45183
U user
W 822
<h1>Dithering</h1>

Dithering is the algorithm for preparing of image to black-white printing (old newspapers, old books) or for old displays systems. Here is 2 different implementations: general purpose with using of matrixes defined in imsh.scm library and special dithering algorithms.
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Original image:<br/>
<img src="/doc/tip/stalin.jpg"/>
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See results for ...<br/><br/>

Output image for <b>general Sierra</b>:<br/>
<img src="/doc/tip/out/dithgen_sierra.jpg"/>
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Output image for <b>general Sierra Two Rows</b>:<br/>
<img src="/doc/tip/out/dithgen_sierra2.jpg"/>
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Output image for <b>general Sierra Low</b>:<br/>
<img src="/doc/tip/out/dithgen_sierralow.jpg"/>
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Output image for <b>general Floyd-Steinberg</b>:<br/>
<img src="/doc/tip/out/dithgen_floyd.jpg"/>
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Z a5118dd21d76249d251b1c1350a98d1d