Method

VipsRegionshrink_method

Declaration [src] 

int
vips_region_shrink_method (
  VipsRegion* from,
  VipsRegion* to,
  const VipsRect* target,
  VipsRegionShrink method
)

Description [src]

Write the pixels target in to from the x2 larger area in from. Non-complex uncoded images and LABQ only. Images with alpha (see vips_image_hasalpha()) shrink with pixels scaled by alpha to avoid fringing.

method selects the method used to do the 2x2 shrink.

See also: vips_region_copy().

Parameters

to VipsRegion
 

Destination region.
 The argument will be modified by the function.
 The instance takes ownership of the data, and is responsible for freeing it.
target VipsRect
 

VipsRect of pixels you need to copy.
 The data is owned by the caller of the function.
method VipsRegionShrink
 

Method to use when generating target pixels.

Return value

Returns: int
  No description available.