Update of "Dithering"

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Artifact ID: 2f2cb7791431841ea60d069b2faa2574adbbe211
Page Name:Dithering
Date: 2014-02-02 19:11:38
Original User: user
Parent: 216d1b01bb2835433ca0b0944d97b2701bb45183


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:

Output image for general Sierra Two Rows:

Output image for general Sierra Low:

Output image for general Floyd-Steinberg: