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NAME

       im_subsample - subsample image by integer factor

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.

SEE ALSO

       im_shrink(3), im_similarity(3), im_zoom(3)

COPYRIGHT

       1989-1996 The National Gallery and Birkbeck College

                                  19 Aug 1996