Comments by "Lawrence D’Oliveiro" (@lawrencedoliveiro9104) on "Ordered Dithering - Computerphile" video.

  1. You can do it in colour, too.
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  2.  @busimagen  Whoosh right back atcha.
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  3.  @busimagen  Figured out what “whoosh” means, yet?
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  4. No, it’s really the opposite of antialiasing.
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  5.  @Carewolf  No, that’s not error diffusion. Error diffusion involves keeping track of the error between the true pixel value and what you have actually displayed, and accumulating (“diffusing”) that into subsequent pixels. Hence the name.
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  6.  @Carewolf  Floyd-Steinberg is one of many algorithms under the category of “error-diffusion”. It’s not the only one.
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  7.  @busimagen  Some people see everything in choler ...
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  8.  @busimagen  Yes, Fuad. That is the reason why it is funny.
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  9. Technically, “dithering” is any kind of variation around a true value. Thus, addition of noise would be best described as “noise-based dithering”.
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  10.  @Gummibrandur  It’s a lousy way to do image compression, though.
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  11.  @shawn2736  That’s not “dithering”. That’s “screening”.
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  12. The original 32-Bit Color QuickDraw from 1988 or 1989 implemented high-quality, but slow, dithering. Then QuickTime added a faster pattern dither for playing back an approximation of full-colour movies on limited-colour displays.
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  13. 4:10 No, you are filtering out the high frequencies -- that is what a low-pass filter does. This leaves only the average of the on-off mixture, which is a greyscale.
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  14. That’s one of many different error-diffusion algorithms.
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  15. Do you mean an audio file or a MIDI file?
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  16. But the digital graphics adapters driving them certainly did. And still do.
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  17. No it wouldn’t. Or, to be more precise, it might work in other situations (e.g. audio), but not here.
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