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AVL.OpenRegion Method

Performs a morphological opening on a region using a predefined kernel.

Namespace:	AvlNet
Assembly:	AVL.NET.dll

Syntax

public static void OpenRegion(
	AvlNet.Region inRegion,
	AvlNet.RegionMorphologyKernel inKernel,
	int inRadiusX,
	int? inRadiusY,
	out AvlNet.Region outRegion
)

Parameters

Name	Type	Range	Default	Description
inRegion	AvlNet.Region			Input region.
inKernel	AvlNet.RegionMorphologyKernel			Kernel shape (predefined).
inRadiusX	int	<0, INF>	1	Nearly half of the kernel's width (2*R+1). Default value: 1.
inRadiusY	int ?	<0, INF>		Nearly half of the kernel's height (2*R+1), or same as inRadiusX. Default value: atl::NIL, or null.
outRegion	AvlNet.Region			Output region.

Description

The operation performs a morphological opening, which is a tool used for removing thin parts from a region. The operation is a convolution of two basic morphological operations:

Firstly, the input region is eroded using ErodeRegion operation.
Then, the resulting region is dilated using DilateRegion operation.

During the erosion thin parts of a region are eliminated, while further dilation assures that the width of region limbs is preserved.

Both of the component operations are conducted using the same inKernel, inRadiusX and inRadiusY parameters.

Examples

OpenRegion run with inKernel = Ellipse of dimensions inRadiusX = 3, inRadiusY = 3.

Errors