.TH IM_BANDMEAN 3 "18 July 2007"
.SH NAME
im_bandmean \- average bands in an image
.SH SYNOPSIS
#include <vips/vips.h>

int im_bandmean( in, out )
.br
IMAGE *in, *out;
.SH DESCRIPTION
.B im_bandmean(3)
writes a one-band image where each pixel is the average of the bands for that
pixel in the input image. The output band format is the same as the input 
band format.

Any size, any number of bands, any type. 
.SH RETURN VALUE
The function returns 0 on success and -1 on error.
.SH SEE ALSO
im_add(3), im_mean(3), im_recomb(3)