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Been looking at the halftone capabilites of ImageMagick. I've tried many combinations of -ordered-dither but without being near the result I want. I've tried Photoshop but that is not an option due to Linux platform and Licences and so on.

In Photoshop I get the result I want by making it Grayscale and then going through this line of choices: Image > Mode > Bitmap and Method Use: halftone screen with these parameters Frequency: 22 LPI Angle: 55 degrees Shape: Round

What would the convert command equivalent be for such outcome?

The original image

Photoshop halftone made by clicking Image > Mode > Bitmap and the choosing halftone screen with these parameters Frequency: 22 lpi Angle: 55 degrees Shape: round

maggan
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  • https://legacy.imagemagick.org/Usage/quantize/#halftone – L. Scott Johnson Jan 26 '22 at 17:49
  • You can create custom dither patterns in Imagmagick. See https://legacy.imagemagick.org/Usage/quantize/#diy_threshold and the sections below it. – fmw42 Jan 26 '22 at 18:14
  • @L.ScottJohnson I found and read that page but I cannot reproduce with the settings I want. Can you specify the command you are using and possibly show your result? – maggan Jan 27 '22 at 08:00
  • @fmw42 I am aware that I can make custom dither patterns but I can't get this kind of pattern. How did you solve it? – maggan Jan 27 '22 at 11:11
  • @maggan What command are you using and in what way is the result you're getting lacking? – L. Scott Johnson Jan 27 '22 at 12:37
  • I have no specific solution. I was just suggesting that you could create a rotated dot pattern as a custom dither pattern with the approach listed on that link. – fmw42 Jan 27 '22 at 16:09

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