How do I interpolate colors

Started by
6 comments, last by swiftcoder 14 years, 10 months ago
what algorithm can I use interpolate from one RGB color to another?
J.W.
Advertisement
Did you try just interpolating the R, G and B components?
Linear interpolation will go the trick.

c = (1 - t) * c0 + t * c1

EDIT: SiCrane beat me to it.
-- gekko
Another way of doing the same maths is

Out = C0 + (C1-C0) * t

Where t = 0 to 1

And as SiCrane said , you have to treat the R,G,B parts separately.
Linear interpolation of each RGB component is the most straightforward, and the results are often acceptable.

If you need a 'better' interpolation, you can convert the RGB colour to HSV, interpolate the HSV, and convert back to RGB for display.

Tristam MacDonald. Ex-BigTech Software Engineer. Future farmer. [https://trist.am]

really? just interpolating the rgb elements separately will do it? I thought there was more to it.
J.W.
If the colors are similar, then just interpolating the components is
probably acceptable. If the colors are very different, it's a different
story. There is no "right" way to interpolate from red to blue, you have
to decide what sort of intermediate colors you want.

---visit my game site http://www.boardspace.net - free online strategy games

Quote:Original post by ddyer
If the colors are similar, then just interpolating the components is
probably acceptable. If the colors are very different, it's a different
story. There is no "right" way to interpolate from red to blue, you have
to decide what sort of intermediate colors you want.
If you are approaching colour from an artists perspective, HSV interpolation works pretty well.

Tristam MacDonald. Ex-BigTech Software Engineer. Future farmer. [https://trist.am]

This topic is closed to new replies.

Advertisement