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FIL.DetectMultipleCircles

Finds circles of a given radius in the input image using Hough Transform.

Namespace:FilNet
Assembly:FIL.NET.dll

Syntax

C++
C#
 
public static void DetectMultipleCircles
(
	FilNet.Image inImage,
	NullableRef<FilNet.Region> inRoi,
	float inRadius,
	float inMaxOverlap,
	float inMinScore,
	float inEdgeThreshold,
	IList<FilNet.HoughCircle> outCircles
)

Parameters

Name Type Range Default Description
inImageFilNet.ImageInput image.
inRoiFilNet.NullableRef<FilNet.Region>Input region of interest. Default value: ftl::NIL.
inRadiusfloat<0.0f, INF>10.0fCircles' radius. Default value: 10.0f.
inMaxOverlapfloat<0.0f, 1.0f>0.1fMaximum accepted overlapping coefficient. Default value: 0.1f.
inMinScorefloat<0.0f, INF>20.0fMinimum matching score. Default value: 20.0f.
inEdgeThresholdfloat10.0fMinimum accepted edge magnitude. Default value: 10.0f.
outCirclesSystem.Collections.Generic.IList<FilNet.HoughCircle>Found circles.

Description

The operation detects circular objects of given radius (in pixels) in the inImage using the Hough Transform approach. The output array is ordered from best matching to worst matching results.

The parameter inMaxOverlap defines how much the detected circles can overlap. The value of 0 means no overlapping is allowed, and also that each circle must be fully contained in the search ROI, whereas the value of 1 allows full overlapping.

Examples

DetectMultipleCircles performed on the sample image.

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.

Hardware acceleration settings may be manipulated with Settings class.

Function Overrides

See also