Color quantization/C: Difference between revisions
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This is a complete program that takes a PPM P6 image and a number, then writes out the image reduced to the number of colors to out.ppm. There is optional dithering, too, which doesn't make a whole lot of difference with say 64 colors or more. And with low colors, the quantization did such a good job of picking average colors that it actually hurts the dithering process. |
[[file:Quantum_frog_dithered.png|200px|thumb]]This is a complete program that takes a PPM P6 image and a number, then writes out the image reduced to the number of colors to out.ppm. There is optional dithering, too, which doesn't make a whole lot of difference with say 64 colors or more. And with low colors, the quantization did such a good job of picking average colors that it actually hurts the dithering process. |
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<lang c>#include <stdio.h> |
<lang c>#include <stdio.h> |
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#include <stdlib.h> |
#include <stdlib.h> |
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