Why not Sierra? https://tannerhelland.com/2012/12/28/dithering-eleven-algori...
I really enjoyed this article thank you for linking it.
Convert photos to Atkinson dithering
51–60 of 61 posts
Re: Convert photos to Atkinson dithering
#52Why not Sierra? https://tannerhelland.com/2012/12/28/dithering-eleven-algori...
I really enjoyed this article thank you for linking it.
Then you might enjoy this one, too:
Re: Convert photos to Atkinson dithering
#53Earlier quoted context omitted.
Invented the algorithm. The choice and arrangement of weights is a matter of fine-tuning to balance practical concerns - not some natural law of mathematics that could be figured out.
The algorithm, including the precious weights, can exist outside our universe. It doesn’t need matter, it only needs maths. Discovered is correct.
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Re: Convert photos to Atkinson dithering
#54Earlier quoted context omitted.
Invented the algorithm. The choice and arrangement of weights is a matter of fine-tuning to balance practical concerns - not some natural law of mathematics that could be figured out.
The algorithm, including the precious weights, can exist outside our universe. It doesn’t need matter, it only needs maths. Discovered is correct.
Bold to say anything "can exist outside our universe" as though one were in a position to know. Do you often visit the Realm of Forms?
Re: Convert photos to Atkinson dithering
#55Here's one I've been working on and off that lets you convert multiple images to MacPaint in a 400k MFS formatted disk image. https://github.com/minorbug/mfsjs I've had this project gathering a light layer of dust in my home directory for a couple months now. I used Gemini Deep Research to help produce the library, and I included the LLM-generated markdown for anyone who wishes to reproduce on other languages, improv…
> MacPaint images have a fixed format: 576 x 720 pixels resolution
Were they really fixed? It says this on wikipedia, but there's no citation.
Re: Convert photos to Atkinson dithering
#56Earlier quoted context omitted.
Yes, he invented* the algorithm. One assumes it must be. * Corrected from 'discovered;' see below.
Invented the algorithm. The choice and arrangement of weights is a matter of fine-tuning to balance practical concerns - not some natural law of mathematics that could be figured out.
I would have thought such a simple combination would have been worked out much earlier. But I checked my 1993 copy of Robert Ulichney's "Digital Halftoning", and it only mentions 4. Floyd and Steinberg (1975), Jarvis, Judice, and Ninke (1976), Stucki (1981), and Stevenson and Arce (1985). Does anybody have a date for Atkinson's?
Re: Convert photos to Atkinson dithering
#57Earlier quoted context omitted.
The algorithm, including the precious weights, can exist outside our universe. It doesn’t need matter, it only needs maths. Discovered is correct.
Bold to say anything "can exist outside our universe" as though one were in a position to know. Do you often visit the Realm of Forms?
Every single time when I talk to the librarian he takes me there - cheap, too, he only asks for some bananas.
Re: Convert photos to Atkinson dithering
#58This implementation is great and the interface brings back memories. I was wondering why my Atkinson dithering web-component[0] was getting more hits today - sad news. I’ve always thought that Atkinson dithering produces the nicest images on really crisp monitors like the original Mac - something about it just looks cool and 80s which is why I used it in a game last year. [0] https://sheep.horse/2023/1/improved_web_c…
Dithering at the pixel level on a retina screen is quite something. I quite like the style on some pictures, not so on others. They have a weird modern old-fashioned look and the individual dots are not as distracting as in actually old pictures.
Thanks. I originally just wanted pixel-to-pixel dithering (quite difficult with modern browsers and retina class displays) but after I saw the results I knew I needed to add lower resolutions as well. It looks really good with some images, especially photos with lots of details - almost like a high-quality printed magazine. However you are right that the extra detail can be distracting to the eye.
Re: Convert photos to Atkinson dithering
#59Earlier quoted context omitted.
Invented the algorithm. The choice and arrangement of weights is a matter of fine-tuning to balance practical concerns - not some natural law of mathematics that could be figured out.
I would have thought such a simple combination would have been worked out much earlier. But I checked my 1993 copy of Robert Ulichney's "Digital Halftoning", and it only mentions 4. Floyd and Steinberg (1975), Jarvis, Judice, and Ninke (1976), Stucki (1981), and Stevenson and Arce (1985). Does anybody have a date for Atkinson's?
It was used on the Macintosh at release, so it must have predated Stevenson and Arce. I doubt that a description was formally published in the way that the others were. Wikipedia describes Atkinson's approach as a variant on Floyd-Steinberg dithering, and I imagine that he must have been aware of at least some of the prior work.
Re: Convert photos to Atkinson dithering
#60Still my favorite B&W dither algorithm. The university had a B&W flatbed scanner attached to a Mac running ... a Hypercard stack? that allowed you to scan an image and get a B&W image. A clipart book I picked up from the college bookstore and a quick scan and I had a "logo" for the Mac shareware games I started writing in 1988 or so. At the time I didn't;t realize how really ... nice .. Atkinson's algorithm is. But w…
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