Update of "Dithering"

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Artifact ID: a2fe01181f0800a8be79e214253505745b53d3d5
Page Name:Dithering
Date: 2014-02-02 19:08:09
Original User: user
Parent: 910102754cd936cc592318d95313f7af6e582947


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.
Original image:

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Output image for general Sierra: