2026-05-05 03:08 UTC
Replies (2)
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@ancientjames@mastodon.social 2026-05-05 03:16
It's worth adding that the scanned resolution is independent of the resolution of the LED panel. The approach is essentially the same as a mechanical TV, where the disk (or drum) is scanning in front of a single light source. The resolution is limited by the number of holes vertically, and how many times it can change the light intensity during the horizontal sweep of the hole. (As it turns out, here the scanned resolution is 80x48, basically the same as the panel's 64x64)
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@foerterer@mastoart.social 2026-05-05 04:33
@ancientjames@mastodon.social @commanderred@chaos.social I see. Just thought by randomly displacing the pinhole origins slightly, you would sacrifice some view angle (or would need to reduce the resolution a bit) and introduce more noise to the overall picture but at the same time might reduce some of the aliasing artifacts arising from the ordered hole placement. No idea though if the raspi could calculate the displaced offsets fast enough in its shader though hashes or a big enough table.