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FitPathToEdges3D_Direct


Header: FIL.h
Namespace: fil
Module: Vision3DStandard

Performs a series of 1D edge detections in 3D and creates a path from the detected points.

Applications: Tracing of an object contour, whose rough location and shape is known beforehand.

Syntax

C++
C#
 
void fil::FitPathToEdges3D_Direct
(
	const fil::Surface& inSurface,
	const fil::PathFittingField& inFittingField,
	ftl::Optional<const fil::CoordinateSystem2D&> inFittingFieldAlignment,
	ftl::Optional<float> inScanStep,
	ftl::Optional<float> inSamplingStep,
	int inScanWidth,
	const fil::InterpolationMethod::Type inSurfaceInterpolation,
	const fil::EdgeScanParams3D& inEdgeScanParams,
	fil::Selection::Type inEdgeSelection,
	ftl::Optional<const fil::LocalBlindness&> inLocalBlindness,
	ftl::Optional<int> inMaxProfileGapWidth,
	ftl::Optional<int> inMaxPathInterpolationLength,
	ftl::Optional<float> inMaxDeviationDelta,
	float inMaxIncompleteness,
	ftl::Conditional<ftl::Array<fil::Point3D> >& outPath,
	ftl::Optional<ftl::Array<ftl::Conditional<fil::SurfaceEdge1D>>&> outEdges = ftl::NIL,
	ftl::Optional<ftl::Conditional<fil::Profile>&> outDeviationProfile = ftl::NIL,
	ftl::Optional<fil::PathFittingField&> outAlignedFittingField = ftl::NIL,
	ftl::Optional<ftl::Array<fil::Profile>&> outHeightProfiles = ftl::NIL,
	ftl::Optional<ftl::Array<fil::Profile>&> outResponseProfiles = ftl::NIL,
	ftl::Optional<ftl::Conditional<ftl::Array<fil::Segment3D> >&> outPathSegments = ftl::NIL,
	ftl::Array<fil::Segment2D>& diagScanSegments,
	ftl::Array<fil::Rectangle2D>& diagSamplingAreas
)

Parameters

Name Type Range Default Description
Input value inSurface const Surface& Surface to fit path to
Input value inFittingField const PathFittingField& Path fitting field
Input value inFittingFieldAlignment Optional<const CoordinateSystem2D&> NIL Adjusts the fitting field to the position of the inspected object
Input value inScanStep Optional<float> 0.0 - 5.0f Optional implicit conversion of the input path to an equidistant one
Input value inSamplingStep Optional<float> 0.0 - NIL Desired distance between consecutive sampling points on the scan segments; if Nil, the bigger of surface X and Y scales is chosen
Input value inScanWidth int 1 - 5 The width of each scan field (in pixels)
Input value inSurfaceInterpolation const InterpolationMethod::Type Bilinear Interpolation method used for extraction of surface points
Input value inEdgeScanParams const EdgeScanParams3D& EdgeScanParams3D ( ProfileInterpolation: Quadratic4 SmoothingStdDev: 1.0f MinMagnitude: 5.0f EdgeTransition: LowToHigh ) Parameters controlling the edge extraction process
Input value inEdgeSelection Selection::Type Selection mode of edges
Input value inLocalBlindness Optional<const LocalBlindness&> NIL Defines conditions in which weaker edges can be detected in the vicinity of stronger edges
Input value inMaxProfileGapWidth Optional<int> 0 - 1 Maximal number of consecutive not existing profile points
Input value inMaxPathInterpolationLength Optional<int> 0 - 1 Maximal number of consecutive points not found
Input value inMaxDeviationDelta Optional<float> 0.0 - NIL Maximal difference between deviations of consecutive path points
Input value inMaxIncompleteness float 0.0 - 0.999 0.1f Maximal fraction of edge points not found
Output value outPath Conditional<Array<Point3D> >& Fitted path or nothing if the fitting failed
Output value outEdges Optional<Array<Conditional<SurfaceEdge1D>>&> NIL Found edges
Output value outDeviationProfile Optional<Conditional<Profile>&> NIL Profile of distances between the actual path points and the corresponding reference path points
Output value outAlignedFittingField Optional<PathFittingField&> NIL Fitting field used; in the image coordinate system
Output value outHeightProfiles Optional<Array<Profile>&> NIL Extracted surface height profiles
Output value outResponseProfiles Optional<Array<Profile>&> NIL Profiles of the edge (derivative) operator response
Output value outPathSegments Optional<Conditional<Array<Segment3D> >&> NIL Segments of the fitted path or nothing if the fitting failed
Diagnostic input diagScanSegments Array<Segment2D>& Segments along which the scans were run
Diagnostic input diagSamplingAreas Array<Rectangle2D>& Areas from which the input image is sampled

Optional Outputs

The computation of following outputs can be switched off by passing value ftl::NIL to these parameters: outEdges, outDeviationProfile, outAlignedFittingField, outHeightProfiles, outResponseProfiles, outPathSegments.

Read more about Optional Outputs.

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.

Errors

List of possible exceptions:

Error type Description
DomainError Sampling step set to zero in FitPathToEdges3D.