FitSegmentToStripe3D_Direct


Performs a series of 1D edge detections in 3D and finds a segment that best matches the detected points.

Applications:Precise detection of a straight edge, whose rough location is known beforehand.

Syntax

C++
C#
Python
 
def FitSegmentToStripe3D_Direct(
	inSurface: Surface,
	inFittingField: SegmentFittingField,
	/,
	*,
	inFittingFieldAlignment: CoordinateSystem2D | None = None,
	inScanCount: int = 10,
	inSamplingStep: float | None = None,
	inScanWidth: int = 5,
	inSurfaceInterpolation: InterpolationMethod = InterpolationMethod.Bilinear,
	inStripeScanParams: StripeScanParams3D = StripeScanParams3D(ProfileInterpolationMethod.Quadratic4, 1.0, 5.0, None, SurfaceStripePolarity.High, 0.0, None),
	inStripeSelection: Selection = Selection.Best,
	inLocalBlindness: LocalBlindness | None = None,
	inMaxProfileGapWidth: int | None = 1,
	inMaxIncompleteness: float = 0.1,
	inOutlierSuppression: MEstimator | None = None,
	outAlignedFittingField: SegmentFittingField | None = None
)
-> (
	outSegment: Segment3D | None,
	outLeftSegment: Segment3D | None,
	outRightSegment: Segment3D | None,
	outStripes: list[SurfaceStripe1D | None],
	outStripePoints: list[Point3D],
	outDeviationProfile: Profile | None,
	outHeightProfiles: list[Profile],
	outResponseProfiles: list[Profile],
	diagScanSegments: list[Segment2D],
	diagSamplingAreas: list[Rectangle2D]
)

Parameters

Name Type Range Default Description
Input value inSurface Surface Surface to fit segment to
Input value inFittingField SegmentFittingField Segment fitting field
Input value inFittingFieldAlignment CoordinateSystem2D | None None Adjusts the fitting field to the position of the inspected object
Input value inScanCount int 3 - 10 The number of points that will be searched to estimate the position of the segment
Input value inSamplingStep float | None 0.0 - None 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 InterpolationMethod InterpolationMethod.Bilinear Interpolation method used for extraction of surface points
Input value inStripeScanParams StripeScanParams3D StripeScanParams3D(ProfileInterpolationMethod.Quadratic4, 1.0, 5.0, None, SurfaceStripePolarity.High, 0.0, None) Parameters controlling the stripe extraction process
Input value inStripeSelection Selection Selection.Best Selection mode of stripe
Input value inLocalBlindness LocalBlindness | None None Defines conditions in which weaker edges can be detected in the vicinity of stronger edges
Input value inMaxProfileGapWidth int | None 0 - 1 Maximal number of consecutive not existing profile points
Input value inMaxIncompleteness float 0.0 - 0.999 0.1 Maximal fraction of stripe points not found
Input value inOutlierSuppression MEstimator | None None Selects a method for ignoring incorrectly detected points
Output value outSegment Segment3D | None Fitted segment or nothing if the fitting fails
Output value outLeftSegment Segment3D | None Fitted left segment
Output value outRightSegment Segment3D | None Fitted right segment
Output value outStripes list[SurfaceStripe1D | None] Found stripes
Output value outStripePoints list[Point3D] Extracted points of middle segment of a surface stripe
Output value outDeviationProfile Profile | None Profile of distances between the actual segment points and the corresponding reference segment points
Output value outAlignedFittingField SegmentFittingField | None None Fitting field used; in the image coordinate system
Output value outHeightProfiles list[Profile] Extracted surface height profiles
Output value outResponseProfiles list[Profile] Profiles of the edge (derivative) operator response
Diagnostic input diagScanSegments list[Segment2D] Segments along which the scans were run
Diagnostic input diagSamplingAreas list[Rectangle2D] Areas from which the input image is sampled

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.