| Operators |
closing_circle — Close a region with a circular structuring element.
closing_circle(Region : RegionClosing : Radius : )
closing_circle behaves analogously to closing, i.e., the regions' boundaries are smoothed and holes within a region which are smaller than the circular structuring element of radius Radius are closed. The closing_circle operation is defined as a dilation followed by a Minkowski subtraction, both with the same circular structuring element.
closing_circle is applied to each input region separately. If gaps between different regions are to be closed, union1 or union2 has to be called first.
Regions to be closed.
Closed regions.
Radius of the circular structuring element.
Default value: 3.5
Suggested values: 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 9.5, 12.5, 15.5, 19.5, 25.5, 33.5, 45.5, 60.5, 110.5
Typical range of values: 0.5 ≤ Radius ≤ 511.5 (lin)
Minimum increment: 1.0
Recommended increment: 1.0
my_closing_circle(Hobject In, double Radius, Hobject *Out)
{
Hobject tmp, StructElement;
gen_circle(StructElement,100.0,100.0,Radius);
dilation1(In,StructElement,&tmp,1);
minkowski_sub1(tmp,StructElement,Out,1);
clear_obj(tmp); clear_obj(StructElement);
}
Let F1 be the area of the input region. Then the runtime complexity for one region is:
closing_circle returns 2 (H_MSG_TRUE) if all parameters are correct. The behavior in case of empty or no input region can be set via:
no region: set_system('no_object_result',<RegionResult>)
empty region: set_system('empty_region_result',<RegionResult>)
Otherwise, an exception is raised.
threshold, regiongrowing, connection, union1, watersheds, class_ndim_norm
reduce_domain, select_shape, area_center, connection
dilation1, minkowski_sub1, erosion1, opening
Foundation
| Operators |