Method
VipsImagesubsample
Declaration [src]
int
vips_subsample (
VipsImage* in,
VipsImage** out,
int xfac,
int yfac,
...
)
Description [src]
Optional arguments:
point: turn on point sample mode
Subsample an image by an integer fraction. This is fast, nearest-neighbour shrink.
For small horizontal shrinks, this operation will fetch lines of pixels
from in and then subsample that line. For large shrinks it will fetch
single pixels.
If point is set, in will always be sampled in points. This can be faster
if the previous operations in the pipeline are very slow.
See also: vips_affine(), vips_shrink(), vips_zoom().
This method is not directly available to language bindings.
Parameters
out-
Type:
VipsImageOutput image.
The argument will be set by the function. The caller of the method takes ownership of the returned data, and is responsible for freeing it. xfac-
Type:
intHorizontal shrink factor.
yfac-
Type:
intVertical shrink factor.
...-
Type:
NULL-terminated list of optional named arguments.