Method

VipsImageconvsep

Declaration [src] 

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

Description [src]

Optional arguments:

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

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.

See also: vips_conv(), vips_gaussmat().

This method is not directly available to language bindings.

Parameters

out VipsImage
 

Output image.
 The argument will be set by the function.
 The instance takes ownership of the data, and is responsible for freeing it.
mask VipsImage
 

Convolution mask.
 The data is owned by the caller of the function.
...
 

NULL-terminated list of optional named arguments.

Return value

Returns: int
 

0 on success, -1 on error.