cscale(6D)

NAME
     cscale - scale the rgb colors of an image

SYNOPSIS
     cscale inimage outimage.rgb r g b [-d]

DESCRIPTION
     cscale can be used to color balance an image by scaling the r, g, and b
     channels by different factors.  Each scale factor is an integer in the
     range 0 to 255.  A scale factor of 0 is interpreted to mean scale by 0.0,
     while a scale factor of 255 means scale by 1.0.  Each scale factor
     multiplies a color channel of the source image.  If the -d option is
     given, the input colors are divided by the given factors.