Constructor
VipsImagemask_butterworth_band
Declaration [src]
int
vips_mask_butterworth_band (
VipsImage** out,
int width,
int height,
double order,
double frequency_cutoff_x,
double frequency_cutoff_y,
double radius,
double amplitude_cutoff,
...
)
Description [src]
Make an butterworth band-pass or band-reject filter, that is, one with a
variable, smooth transition positioned at frequency_cutoff_x,
frequency_cutoff_y, of radius radius.
The shape of the curve is controlled by
order — higher values give a sharper transition. See Gonzalez and Wintz,
Digital Image Processing, 1987.
Optional arguments
nodc:gboolean, don’t set the DC pixelreject:gboolean, invert the filter senseoptical:gboolean, coordinates in optical spaceuchar:gboolean, output a uchar image
See also
This constructor is not directly available to language bindings.
Parameters
out-
Type:
VipsImageOutput image.
The argument will be set by the function. The caller of the function takes ownership of the returned data, and is responsible for freeing it. width-
Type:
intImage size.
height-
Type:
intImage size.
order-
Type:
doubleFilter order.
frequency_cutoff_x-
Type:
doubleBand position.
frequency_cutoff_y-
Type:
doubleBand position.
radius-
Type:
doubleBand radius.
amplitude_cutoff-
Type:
doubleAmplitude threshold.
...-
Type:
NULL-terminated list of optional named arguments.