You are here: Start » AVL.NET » AVL.FitPathToStripe(AvlNet.Image, AvlNet.PathFittingMap, AvlNet.StripeScanParams, AvlNet.Selection, AvlNet.LocalBlindness, int?, float?, float, AvlNet.Path, AvlNet.Path, AvlNet.Path, float[], AvlNet.Segment2D[], AvlNet.Profile, AvlNet.Point2D[], AvlNet.Point2D[], float[], AvlNet.Profile[], AvlNet.Profile[])

AVL.FitPathToStripe(AvlNet.Image, AvlNet.PathFittingMap, AvlNet.StripeScanParams, AvlNet.Selection, AvlNet.LocalBlindness, int?, float?, float, AvlNet.Path, AvlNet.Path, AvlNet.Path, float[], AvlNet.Segment2D[], AvlNet.Profile, AvlNet.Point2D[], AvlNet.Point2D[], float[], AvlNet.Profile[], AvlNet.Profile[])

Performs a series of 1D stripe detections and creates a path from the detected points.

Namespace:AvlNet
Assembly:AVL.NET.dll

Syntax


public static void FitPathToStripe(
	AvlNet.Image inImage,
	AvlNet.PathFittingMap inFittingMap,
	AvlNet.StripeScanParams inStripeScanParams,
	AvlNet.Selection inStripeSelection,
	AvlNet.LocalBlindness inLocalBlindness,
	int? inMaxInterpolationLength,
	float? inMaxDeviationDelta,
	float inMaxIncompleteness,
	out AvlNet.Path outPath,
	out AvlNet.Path outLeftPath,
	out AvlNet.Path outRightPath,
	out float[] outStripeWidths,
	out AvlNet.Segment2D[] outStripeSegments,
	out AvlNet.Profile outDeviationProfile,
	out AvlNet.Point2D[] outFoundPoints,
	out AvlNet.Point2D[] outMissingPoints,
	out float[] outStripeMagnitudes,
	out AvlNet.Profile[] diagBrightnessProfiles,
	out AvlNet.Profile[] diagResponseProfiles
)

Parameters

inImage
Type: AvlNet.Image
Image to fit the path to
inFittingMap
Type: AvlNet.PathFittingMap
Input fitting map
inStripeScanParams
Type: AvlNet.StripeScanParams
Parameters controlling the stripe extraction process
inStripeSelection
Type: AvlNet.Selection
Selection mode of stripe
inLocalBlindness
Type: AvlNet.LocalBlindness
Defines conditions in which weaker edges can be detected in the vicinity of stronger edges, or null.
inMaxInterpolationLength
Type: System.Nullable<System.Int32>
Maximal number of consecutive points not found, or null.
inMaxDeviationDelta
Type: System.Nullable<System.Single>
Maximal difference between deviations of consecutive path points, or null.
inMaxIncompleteness
Type: System.Single
Maximal fraction of stripe points not found
outPath
Type: AvlNet.Path
Fitted path in the middle of found stripe
outLeftPath
Type: AvlNet.Path
Fitted left path
outRightPath
Type: AvlNet.Path
Fitted right path
outStripeWidths
Type: System.Single
Found stripe widths
outStripeSegments
Type: AvlNet.Segment2D
Found stripe segments
outDeviationProfile
Type: AvlNet.Profile
outFoundPoints
Type: AvlNet.Point2D
outMissingPoints
Type: AvlNet.Point2D
outStripeMagnitudes
Type: System.Single
diagBrightnessProfiles
Type: AvlNet.Profile
Extracted image profiles
diagResponseProfiles
Type: AvlNet.Profile
Profiles of the edge (derivative) operator response

Description

The operation tries to fit a given path to stripe present in the inImage image. Internally, it performs a series of scans with the ScanSingleStripe filter using inFittingMap previously generated from the object being fitted. The found points are then used to determine the actual position of the path in the image. Only inMaxIncompleteness fraction of these scans may fail. If the fitting according to the given parameters is not possible, outPath is set to Nil.

There are also another parameters that control the path fitting process. The inMaxDeviationDelta parameter defines the maximal allowed difference between deviations of consecutive points from the input path points. If some of the scans fail or if some of found points are classified to be wrong according to another control parameters, output path points corresponding to them are interpolated depending on points in their nearest vicinity. No more than inMaxInterpolationLength consecutive points can be interpolated. The exception to this behavior are points which were not found on both ends of the input path. Those are not part of the result at all.

Examples

Fitting a path to a dark stripe
(inStripeScanParams.SmoothingStdDev = 2.0, inStripeScanParams.MinStripeWidth = 15.0, inStripeScanParams.StripePolarity = Dark).

Remarks

For more information about local coordinate systems please refer to the following article.

This filter is a part of the Shape Fitting toolset. To read more about this technique, one can refer to the Shape Fitting chapter of our Machine Vision Guide

See also