Method
VipsImageconvi
Declaration [src]
int
vips_convi (
VipsImage* in,
VipsImage** out,
VipsImage* mask,
...
)
Description [src]
Integer convolution. This is a low-level operation, see vips_conv() for
something more convenient.
mask is converted to an integer mask with rint() of each element, rint of
scale and rint of offset. Each output pixel is then calculated as
sigma[i]{pixel[i] * mask[i]} / scale + offset
The output image always has the same VipsBandFormat as the input image.
For #VIPS_FORMAT_UCHAR images, vips_convi() uses a fast vector path based on
half-float arithmetic. This can produce slightly different results.
Disable the vector path with --vips-novector or VIPS_NOVECTOR or vips_vector_set_enabled().
See also: vips_conv().
This method is not directly available to language bindings.
Parameters
out-
Type:
VipsImageOutput 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:
VipsImageConvolve with this mask.
The data is owned by the caller of the method. ...-
Type:
NULL-terminated list of optional named arguments.