color mapping changes

2025-07-26 16:45:08 +02:00
parent e9e02a2473
commit 6a90d6306d
4 changed files with 70 additions and 12 deletions
--- a/src/utils.c
+++ b/src/utils.c
@@ -218,7 +218,7 @@ double nn_colorDistance(int colorA, int colorB) {
    delta.g = a.g - b.g;
    delta.b = a.b - b.b;

-    return delta.r*delta.r + delta.g*delta.g + delta.b*delta.b;
+    return 0.2126 * delta.r*delta.r + 0.7152 * delta.g*delta.g + 0.0722 * delta.b*delta.b;
 }

 int nn_mapColor(int color, int *palette, int paletteSize) {