How My Images Are Dithered • Hacker News Board

Re: How My Images Are Dithered

#61

Post by inigyou » Sat, Jul 25, 2026, 6:17 PM UTC

trentor wrote: post #27

I was a rotogravure printer in another life, and this post made me a bit nostalgic. In intaglio printing you usually don't see these patterns because the electrostatic assist pulls the ink out of the cells, and the colors blend together more. It's more akin to a developed photo. I mainly remember them from having to do offset printing for the intermediate exam during my apprenticeship. Our paper was about 3.5 meters…

I can imagine that feeling of "being a cog in a beautiful machine" gets a lot less people these days because so many cogs are automated and so many machines are no longer beautiful.

Re: How My Images Are Dithered

#62

Post by chronogate_op » Sat, Jul 25, 2026, 6:49 PM UTC

[flagged]

Re: How My Images Are Dithered

#63

Post by timnetworks » Sat, Jul 25, 2026, 7:40 PM UTC

Is nobody going to mention anything about the fact that one of the friends at the restaurant has no _head_ ?

Re: How My Images Are Dithered

#64

Post by effnorwood » Sat, Jul 25, 2026, 7:49 PM UTC

slowly. then all at once.

Re: How My Images Are Dithered

#65

Post by imhoguy » Sat, Jul 25, 2026, 7:53 PM UTC

Up! Very cool site, creative, slopless and with that 90/00s vibe I miss :)

Re: How My Images Are Dithered

#66

Post by zeraye » Sat, Jul 25, 2026, 7:57 PM UTC

A few years ago I made this fun little app https://dithering-sigma.vercel.app/. May be interesting for someone. Source code https://github.com/zeraye/dithering.

Re: How My Images Are Dithered

#67

Post by Applejinx » Sat, Jul 25, 2026, 7:58 PM UTC

gausswho wrote: post #14

iTokio wrote: post #13

Earlier quoted context omitted.

That’s a hn filter to avoid clickbait titles I think

My Title Was Dithered

I went back to Ohio…

Re: How My Images Are Dithered

#68

Post by matsemann » Sat, Jul 25, 2026, 8:10 PM UTC

Almost two decades ago I used a software called Rasterbator to dither an image into dots, blowing it up to multiple A4 pages one could then decorate a whole wall with. Up close it would just be circles of various sizes, but from a distance the image would show up. Super cool. Used it to decorate a wall in my dorm with a picture of the family dog.

Edit: found it. One picture taken from up close. Other pictures the whole image when laid out over multiple pages in the software https://imgur.com/a/OeaIWuY

Re: How My Images Are Dithered

#69

Post by bthallplz » Sat, Jul 25, 2026, 8:29 PM UTC

Neat! I really liked the look of the Floyd-Steinberg algorithm in the article, so when I googled for a web tool that'll do it for me, I found the tool mentioned here: https://www.ascii-magic.com/styles/dither

It has some fun animation options and settings to play with, and there's other dithering algorithms to play with.

Re: How My Images Are Dithered

#70

Post by bthallplz » Sat, Jul 25, 2026, 8:43 PM UTC

ectoloph wrote: post #47

Didder[0] is a good tool for dithering. I use it to pre-process images for the 6-color e-ink displays. You can go down a rabbit hole of dithering algorithms too, like Floyd Steinberg[1] [0] https://github.com/makew0rld/didder [1] https://en.wikipedia.org/wiki/Floyd%E2%80%93Steinberg_dither...

Have you posted anywhere online about your experiences with color e-ink displays? I think they're super neat, and I love the idea of using dithering for them. :D