BlobCounterBaseGetBlobsTopAndBottomEdges Method

Get list of points on the top and bottom edges of the blob.

Namespace: Accord.Imaging
Assembly: Accord.Imaging (in Accord.Imaging.dll) Version: 3.8.0

Syntax

public void GetBlobsTopAndBottomEdges(
	Blob blob,
	out List<IntPoint> topEdge,
	out List<IntPoint> bottomEdge
)

Public Sub GetBlobsTopAndBottomEdges ( 
	blob As Blob,
	<OutAttribute> ByRef topEdge As List(Of IntPoint),
	<OutAttribute> ByRef bottomEdge As List(Of IntPoint)
)

Request Example View Source

Parameters

blob: Type: Accord.ImagingBlob
Blob to collect edge points for.
topEdge: Type: System.Collections.GenericListIntPoint
List of points on the top edge of the blob.
bottomEdge: Type: System.Collections.GenericListIntPoint
List of points on the bottom edge of the blob.

Exceptions

Exception	Condition
ApplicationException	No image was processed before, so blob can not be extracted.

Remarks

The method scans each column of the blob and finds the most top and the most bottom points for it adding them to appropriate lists. The method may be very useful in conjunction with different routines from Accord.Math.Geometry, which allow finding convex hull or quadrilateral's corners.

Note
Both lists of points are sorted by X coordinate - points with smaller X value go first.

Reference

BlobCounterBase Class

Accord.Imaging Namespace

BlobCounterBaseAddLanguageSpecificTextSet("LSTA34FB89C_0?cpp=::|nu=.");GetBlobsTopAndBottomEdges Method

Parameters

Reference

BlobCounterBaseGetBlobsTopAndBottomEdges Method