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NAME

       im_stretch3 -  stretch horizontally by 3%, displace sub-pixel mask

SYNOPSIS

       #include <vips/vips.h>

       int im_stretch3( in, out, xdisp, ydisp )
       IMAGE *in, *out;
       double xdisp, ydisp;

DESCRIPTION

       im_stretch3()  stretches  the  input  image  by  3%  horizontally,  and
       displaces it by xdisp/ydisp. It uses bi-cubic interpolation,  but  runs
       quickly. It works only for unsigned short images.

       This  function  is  part  of  the  MARC  acquisition  software,  but is
       generally useful for squaring up the pixels in images from the  Kontron
       ProgRes camera range.

RETURN VALUE

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

SEE ALSO

       im_conv(3), im_shrink(3).

COPYRIGHT

       The National Gallery, 1997

                                  Sep 18 1997