SYNOPSIS

#include <vips/vips.h>

int im_subsample(in, out, xsub, ysub)
IMAGE *in, *out;
int xsub, ysub;

DESCRIPTION

im_subsample() sub-samples image in by an x and y integer factor. It is much faster than im_shrink(), especially for large partial images.

It works for any image type.

RETURN VALUE

The function returns 0 on success and -1 on error.

COPYRIGHT

1989-1996 The National Gallery and Birkbeck College