im_falsecolour - colour a mono image
#include <vips/vips.h>
int im_falsecolour(in, out)
IMAGE *in, *out;
Turns a one-band unsigned char image into a three band unsigned char
image. The colour scale is stolen from a PET scan and has red for hot,
green for normal and blue for cold.
0 on success and -1 on error.
im_disp2XYZ(3), etc.
National Gallery
J. Cupitt
30 October 1992