JaromilA to retrocomputing@lemmy.sdf.org · 7 months agoHas anyone C code to filter frames to 1bit color depth approximation?imagemessage-square12fedilinkarrow-up138arrow-down11
arrow-up137arrow-down1imageHas anyone C code to filter frames to 1bit color depth approximation?JaromilA to retrocomputing@lemmy.sdf.org · 7 months agomessage-square12fedilink
minus-squarevrighter@discuss.tchncs.delinkfedilinkarrow-up18·7 months agoyou want to convert the image to grayscale properly (using luminance, not the mean of the rgb colors), then you can palettize it using a dithering algorithm like floyd-steinberg, with a palette containing only the colors black and white.
minus-squareJaromilOPAlinkfedilinkarrow-up1arrow-down1·7 months agoI’m looking for a source code in C that does that, to include it in frei0r, before I have to go and write it myself…
minus-squarevrighter@discuss.tchncs.delinkfedilinkarrow-up1·7 months agoI told you what to look for. It’s a simple algorithm. Maybe try looking at the “implementation” section on the wikipedia page…
you want to convert the image to grayscale properly (using luminance, not the mean of the rgb colors), then you can palettize it using a dithering algorithm like floyd-steinberg, with a palette containing only the colors black and white.
I’m looking for a source code in C that does that, to include it in frei0r, before I have to go and write it myself…
I told you what to look for. It’s a simple algorithm. Maybe try looking at the “implementation” section on the wikipedia page…