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FitCircleToRidges3D

Header:	AVL.h
Namespace:	avl
Module:	Vision3DStandard

Performs a series of 1D ridge detections and finds a circle that best matches the detected points.

Applications: Precise detection of a circular object or hole, whose rough location is known beforehand.

Syntax

void avl::FitCircleToRidges3D
(
	const avl::Surface& inSurface,
	const CircleFittingMap& inFittingMap,
	const RidgeScanParams3D& inRidgeScanParams,
	avl::Selection::Type inRidgeSelection,
	atl::Optional<const avl::LocalBlindness&> inLocalBlindness,
	atl::Optional<int> inMaxProfileGapWidth,
	float inMaxIncompleteness,
	avl::CircleFittingMethod::Type inFittingMethod,
	atl::Optional<avl::MEstimator::Type> inOutlierSuppression,
	atl::Conditional<avl::Circle3D>& outCircle,
	atl::Optional<atl::Array<atl::Conditional<avl::SurfaceRidge1D> >&> outRidges = atl::NIL,
	atl::Optional<atl::Conditional<avl::Profile>&> outDeviationProfile = atl::NIL,
	atl::Optional<atl::Array<avl::Point3D>&> outInliers = atl::NIL,
	atl::Array<avl::Profile>& diagHeightProfiles,
	atl::Array<avl::Profile>& diagResponseProfiles
)

Parameters

Name	Type	Range	Default	Description
inSurface	const Surface&			Surface to fit the circle to
inFittingMap	const CircleFittingMap&			Input fitting map
inRidgeScanParams	const RidgeScanParams3D&			Parameters controlling the ridge extraction process
inRidgeSelection	Selection::Type		SelectionBest	Selection mode of ridges
inLocalBlindness	Optional<const LocalBlindness&>		NIL	Defines conditions in which weaker ridges can be detected in the vicinity of stronger ridges
inMaxProfileGapWidth	Optional<int>	0 -	1	Maximal number of consecutive not existing profile points
inMaxIncompleteness	float	0.0 - 0.999	0.1f	Maximal fraction of ridge points not found
inFittingMethod	CircleFittingMethod::Type		AlgebraicTaubin	Method used to fit a circle
inOutlierSuppression	Optional<MEstimator::Type>		NIL	Selects a method for ignoring incorrectly detected points
outCircle	Conditional<Circle3D>&			Fitted circle or nothing if the fitting fails
outRidges	Optional<Array<Conditional<SurfaceRidge1D> >&>		NIL	Found ridges
outDeviationProfile	Optional<Conditional<Profile>&>		NIL	Profile of distances between the actual circle points and the corresponding reference circle points
outInliers	Optional<Array<Point3D>&>		NIL	Points matching the fitting Circle
diagHeightProfiles	Array<Profile>&			Extracted surface height profiles
diagResponseProfiles	Array<Profile>&			Profiles of the ridge operator response

Optional Outputs

The computation of following outputs can be switched off by passing value atl::NIL to these parameters: outRidges, outDeviationProfile, outInliers.

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.

Errors

List of possible exceptions:

Error type	Description
DomainError	Ridge operator parameters are too low in surface ridges detector in FitCircleToRidges3D.