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Brooke Vibber 2023-03-19 18:59:22 -07:00
parent 89db2f3d1d
commit fdb20b47ec
1 changed files with 34 additions and 20 deletions
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54
dither-image.js
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@ -566,31 +566,45 @@ function decimate(input, palette, n, inputError, y) {
console.log('end', decimated);
*/
// fitness
// popularity? not really working right
// first, dither to the total atari palette
while (decimated.length > n) {
console.log(`y ${y}`);
let worstFitness = Infinity;
let nextPalette = null;
for (let i = 0; i < decimated.length; i++) {
if (keepers[i]) {
continue;
}
let without = decimated.slice();
without.splice(i, 1);
let {popularity, fitness} = dither(decimated);
//console.log(y);
let total = 0;
for (let n of fitness) {
total += n;
}
let avg = total / fitness.length;
if (avg < worstFitness) {
worstFitness = avg;
nextPalette = without;
let {popularity, fitness, output} = dither(decimated);
let pops = [];
let fits = [];
pops.fill(0, 0, 256);
fits.fill(0, 0, 256);
for (let i = 0; i < decimated.length; i++) {
let c = decimated[i];
pops[c] = popularity[i];
for (let x = 0; x < fitness.length; x++) {
if (output[x] === i) {
fits[c] += fitness[x];
}
}
}
decimated = nextPalette;
let metric = (c) => {
let rgb = atariRGB[c];
let max = Math.max(rgb.r, rgb.g, rgb.b);
let fit = fits[c];
let pop = pops[c];
return pop;
}
let a = decimated.slice();
// temporarily strip the reserved items
a = a.filter((color) => !keepers[color]);
a = a.filter((color) => popularity[color]);
a.sort((a, b) => {
return metric(b) - metric(a);
});
console.log(a);
a = reserved.concat(a);
decimated = a.slice(0, n);
//decimated = a.slice(0, decimated.length - 1);
//console.log(decimated);
}
//console.log('end', decimated);