Method

VipsImageconvf

Declaration [src] 

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

Description [src]

Convolution. This is a low-level operation, see vips_conv() for something more convenient.

Perform a convolution of in with mask. Each output pixel is calculated as sigma[i]{pixel[i] * mask[i]} / scale + offset, where scale and offset are part of mask.

The convolution is performed with floating-point arithmetic. The output image is always #VIPS_FORMAT_FLOAT unless in is #VIPS_FORMAT_DOUBLE, in which case out is also #VIPS_FORMAT_DOUBLE.

See also: vips_conv().

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
 

Convolve with this 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.