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.
J. Cupitt 30 October 1992