You are here: Start » AVL.NET » AVL.SplitRegionIntoBlobs(AvlNet.Region, AvlNet.RegionConnectivity, int, int?, bool, AvlNet.Region[])

AVL.SplitRegionIntoBlobs(AvlNet.Region, AvlNet.RegionConnectivity, int, int?, bool, AvlNet.Region[])

Splits a region into an array of regions corresponding to its connected components.

Namespace:	AvlNet
Assembly:	AVL.NET.dll

Syntax


public static void SplitRegionIntoBlobs(
	AvlNet.Region inRegion,
	AvlNet.RegionConnectivity inConnectivity,
	int inMinBlobArea,
	int? inMaxBlobArea,
	bool inRemoveBoundaryBlobs,
	out AvlNet.Region[] outBlobs
)

Parameters

inRegion: Type: AvlNet.Region
Input region
inConnectivity: Type: AvlNet.RegionConnectivity
Type of connectivity used for the region foreground
inMinBlobArea: Type: System.Int32
Minimal area of a resulting blob
inMaxBlobArea: Type: System.Nullable<System.Int32>
Maximal area of a resulting blob, or null.
inRemoveBoundaryBlobs: Type: System.Boolean
Flag indicating whether the blobs on border of the input region should be removed or not
outBlobs: Type: AvlNet.Region

Description

The operation computes an array of connected regions corresponding to the connected components of the input region pixels. Each region in the resulting array will have dimensions equal to those of the input region.

Resulting array will contain only regions which have area in range defined by inputs: inMinBlobArea and inMaxBlobArea.

Images below shows neighbor of the gray pixel in different inConnectivity selection.


inConnectivity.FourDirections	inConnectivity.EightDirections

Examples

The image below show an input 10x10 pixels region.

Images below shows result of SplitRegionIntoBlobs filter with different inConnectivity.


inConnectivity.FourDirections	inConnectivity.EightDirections

Images below shows result of SplitRegionIntoBlobs filter with different inRemoveBoundaryBlobs.


inRemoveBoundaryBlobs = True	inRemoveBoundaryBlobs = False

Remarks

When inRemoveBoundaryBlobs is set to True all filters near the region boundary will be removed. The region boundary is described by region frame.