Vips.Image.shrink (original) (raw)

Method

Vips Imageshrink

Declaration [src]


int
vips_shrink (
  VipsImage* in,
  VipsImage** out,
  double hshrink,
  double vshrink,
  ...
)

Description [src]

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.

Optional arguments

ceil: gboolean, round-up output dimensions

This method is not directly available to language bindings.

Parameters

out

Type: VipsImage

Output 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: double

Horizontal shrink.

vshrink

Type: double

Vertical shrink.

...

Type: ``

NULL-terminated list of optional named arguments.

Return value

Type: int

0 on success, -1 on error.

Vips.Image.shrink (original) (raw)

Method