Method

VipsImageconvsep

Declaration [src] 

int
vips_convsep (
  VipsImage* in,
  VipsImage** out,
  VipsImage* mask,
  ...
)

Description [src]

Perform a separable convolution of in with mask. See vips_conv() for a detailed description.

The mask must be 1xn or nx1 elements.

The image is convolved twice: once with mask and then again with mask rotated by 90 degrees. This is much faster for certain types of mask (gaussian blur, for example) than doing a full 2D convolution.

Optional arguments

  • precision: VipsPrecision, calculation accuracy
  • layers: gint, number of layers for approximation
  • cluster: gint, cluster lines closer than this distance

See also

vips_conv(), vips_gaussmat().

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.
mask

Type: VipsImage

Convolution mask.

The data is owned by the caller of the method.
...

Type: 

NULL-terminated list of optional named arguments.

Return value

Type: int

0 on success, -1 on error.