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

AVL.FitPathToRidges(AvlNet.Image, AvlNet.PathFittingMap, AvlNet.RidgeScanParams, AvlNet.Selection, AvlNet.LocalBlindness, int?, float?, float, AvlNet.Path, AvlNet.Profile, AvlNet.Point2D[], AvlNet.Point2D[], float[], AvlNet.Profile[], AvlNet.Profile[])

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

Namespace:	AvlNet
Assembly:	AVL.NET.dll

Syntax


public static void FitPathToRidges(
	AvlNet.Image inImage,
	AvlNet.PathFittingMap inFittingMap,
	AvlNet.RidgeScanParams inRidgeScanParams,
	AvlNet.Selection inRidgeSelection,
	AvlNet.LocalBlindness inLocalBlindness,
	int? inMaxInterpolationLength,
	float? inMaxDeviationDelta,
	float inMaxIncompleteness,
	out AvlNet.Path outPath,
	out AvlNet.Profile outDeviationProfile,
	out AvlNet.Point2D[] outFoundPoints,
	out AvlNet.Point2D[] outMissingPoints,
	out float[] outRidgeMagnitudes,
	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
inRidgeScanParams: Type: AvlNet.RidgeScanParams
Parameters controlling the ridge extraction process
inRidgeSelection: Type: AvlNet.Selection
Selection mode of ridges
inLocalBlindness: Type: AvlNet.LocalBlindness
Defines conditions in which weaker ridges can be detected in the vicinity of stronger ridges, 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 ridge points not found
outPath: Type: AvlNet.Path
Fitted path or nothing if the fitting failed
outDeviationProfile: Type: AvlNet.Profile
outFoundPoints: Type: AvlNet.Point2D
outMissingPoints: Type: AvlNet.Point2D
outRidgeMagnitudes: Type: System.Single
diagBrightnessProfiles: Type: AvlNet.Profile
Extracted image profiles
diagResponseProfiles: Type: AvlNet.Profile
Profiles of the ridge operator response

Description

The operation tries to fit a given path to ridges present in the inImage image. Internally, it performs a series of scans with the ScanSingleRidge 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 the walls of a plastic capsule
(inRidgeScanParams.RidgePolarity = Dark, inRidgeScanParams.RidgeWidth = 6, inRidgeScanParams.RidgeOperator = ArithmeticMean).

Remarks

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