int
vips_convf (
VipsImage* in,
VipsImage** out,
VipsImage* mask,
...
)
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.
This method is not directly available to language bindings.
Parametersout
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
Convolve with this mask.
The data is owned by the caller of the method....
Type:
NULL-terminated list of optional named arguments.
Type: int
0 on success, -1 on error.
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