Method
VipsImageshrinkv
Declaration [src]
int
vips_shrinkv (
VipsImage* in,
VipsImage** out,
int vshrink,
...
)
Description [src]
Shrink in vertically by an integer factor.
Each pixel in the output is
the average of the corresponding column of vshrink pixels in the input.
This is a very low-level operation: see vips_resize() for a more
convenient way to resize images.
This operation does not change xres or yres. The image resolution needs to be updated by the application.
Optional arguments
ceil:gboolean, round-up output dimensions
See also
vips_shrinkh(), vips_shrink(), vips_resize(),
vips_affine().
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. vshrink-
Type:
intVertical shrink.
...-
Type:
NULL-terminated list of optional named arguments.