Similarity Between Colors

Question

I\'m writing a program that works with images and at some point I need to posterize the image. This means I need to bin the colors, but I\'m having trouble deciding how to t

Answer 1

Just a comment if you are going to move to HSV (or similar spaces):

• Diffing on H: difference between 0° and 359° is numerically big but perceptually is negligible.

• H difference if V or S are small - is small.

• For computer vision apps, more important not perceptual difference (used mostly by paint manufacturers) but are these colors belong to the same object/segment or not. Which means that we might partially ignore V, which can change from lighting conditions.