Class StructuredEdgeDetection

Class implementing edge detection algorithm from @cite Dollar2013 :

Inheritance
System.Object
DisposableObject
DisposableCvObject
Algorithm
StructuredEdgeDetection
Implements
Inherited Members
Namespace: OpenCvSharp.XImgProc
Assembly: OpenCvSharp.dll
Syntax
public class StructuredEdgeDetection : Algorithm, ICvPtrHolder

Constructors

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StructuredEdgeDetection(IntPtr)

Creates instance by raw pointer

Declaration
protected StructuredEdgeDetection(IntPtr p)
Parameters
Type Name Description
IntPtr p

Methods

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ComputeOrientation(InputArray, OutputArray)

The function computes orientation from edge image.

Declaration
public virtual void ComputeOrientation(InputArray src, OutputArray dst)
Parameters
Type Name Description
InputArray src

edge image.
OutputArray dst

orientation image.
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Create(String, RFFeatureGetter)

Creates a StructuredEdgeDetection

Declaration
public static StructuredEdgeDetection Create(string model, RFFeatureGetter howToGetFeatures = null)
Parameters
Type Name Description
System.String model

name of the file where the model is stored
RFFeatureGetter howToGetFeatures

optional object inheriting from RFFeatureGetter. You need it only if you would like to train your own forest, pass null otherwise
Returns
Type Description
StructuredEdgeDetection
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DetectEdges(InputArray, OutputArray)

The function detects edges in src and draw them to dst. The algorithm underlies this function is much more robust to texture presence, than common approaches, e.g.Sobel

Declaration
public virtual void DetectEdges(InputArray src, OutputArray dst)
Parameters
Type Name Description
InputArray src

source image (RGB, float, in [0;1]) to detect edges
OutputArray dst

destination image (grayscale, float, in [0;1]) where edges are drawn
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DisposeManaged()

Releases managed resources

Declaration
protected override void DisposeManaged()
Overrides
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DisposeUnmanaged()

Declaration
protected override void DisposeUnmanaged()
Overrides
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EdgesNms(InputArray, InputArray, OutputArray, Int32, Int32, Single, Boolean)

The function edgenms in edge image and suppress edges where edge is stronger in orthogonal direction.

Declaration
public virtual void EdgesNms(InputArray edgeImage, InputArray orientationImage, OutputArray dst, int r = 2, int s = 0, float m = 1F, bool isParallel = true)
Parameters
Type Name Description
InputArray edgeImage

edge image from detectEdges function.
InputArray orientationImage

orientation image from computeOrientation function.
OutputArray dst

suppressed image (grayscale, float, in [0;1])
System.Int32 r

radius for NMS suppression.
System.Int32 s

radius for boundary suppression.
System.Single m

multiplier for conservative suppression.
System.Boolean isParallel

enables/disables parallel computing.
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Get()

Declaration
public override IntPtr Get()
Returns
Type Description
IntPtr
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GetBoundingBoxes(InputArray, InputArray, out Rect[])

Returns array containing proposal boxes.

Declaration
public virtual void GetBoundingBoxes(InputArray edgeMap, InputArray orientationMap, out Rect[] boxes)
Parameters
Type Name Description
InputArray edgeMap

edge image.
InputArray orientationMap

orientation map.
OpenCvSharp.Rect[] boxes

proposal boxes.

Implements