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im_stretch3 - stretch horizontally by 3%, displace sub-pixel mask
#include
<vips/vips.h>
int im_stretch3( in, out, xdisp, ydisp )
IMAGE *in, *out;
double xdisp, ydisp;
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.
The
function returns 0 on success and -1 on error.
im_conv(3)
, im_shrink(3)
.
The National Gallery, 1997
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