How do I alter color balance in photos?

[magickuser]

Hi, does anyone know how I can alter the color balance / white balance in a photo?

For example, I would like to correct for fluorescent light, tungsten light, and so forth.

Alternatively, I would like a simple way to add R, G, B, C, M, or Y to make adjustments. For example, fluorescent lighting gives a green tint to photos, so I would like to change a photo to add green's complement (magenta) to a photo.

Thanks.

[Bonzo]

You could try "channel" loads of options:
http://www.imagemagick.org/script/comma ... hp#channel

Code: Select all

convert house.jpg -channel g -normalize adjust.jpg

"Levels" for white point - no idea how to use that:
http://www.imagemagick.org/script/comma ... .php#level

There are some other ideas here: http://www.imagemagick.org/Usage/color/