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Question

Suppose I have a grayscale image and I want to translate the image into a black and white image (bw-image) in the following way:

Is that understandable? Is there a program, preferably open-source, that is able to achieve this task?

Thanks!

Have a look at codegolf.stackexchange.com/questions/26554/… which shows some approaches to dithering a grayscale image into a black-and-white image. — Glenn Randers-Pehrson, Sep 2, 2015 at 12:10

spiral · Accepted Answer · 2015-09-02 09:43:04Z

If I understand correctly, you want to generate a halftone image like this:

If so, there are a number of applications and plugins that you can use.

It can be done in Photoshop, using either the built in Filter > Pixelate > Color Halftone or through changing the image mode to bitmap and using a halftone screen.
It can be done in illustrator with the color halftone filter or with the Phantasm plugin (paid)
The rasterbator allows you to convert an image to halftone online
GIMP can create halftones using the Newsprint filter
Inkscape can also create haltone effects using the tiled clones function.

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