im_subsample(3) - Linux man page
Name
im_subsample - subsample image by integer factorSynopsis
#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.