Method
VipsImageshrink
Declaration [src]
int
vips_shrink (
VipsImage* in,
VipsImage** out,
double hshrink,
double vshrink,
...
)
Description [src]
Optional arguments:
ceil: round-up output dimensions
Shrink in by a pair of factors with a simple box filter. For non-integer
factors, vips_shrink() will first shrink by the integer part with a box
filter, then use vips_reduce() to shrink by the
remaining fractional part.
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.
See also: vips_resize(), vips_reduce().
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. hshrink-
Type:
doubleHorizontal shrink.
vshrink-
Type:
doubleVertical shrink.
...-
Type:
NULL-terminated list of optional named arguments.