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HarrisCornersDetector Class |
Harris Corners Detector.
Inheritance HierarchySystemObject
Accord.ImagingHarrisCornersDetector
Accord.ImagingHarrisCornersDetector
Namespace: Accord.Imaging
Assembly: Accord.Imaging (in Accord.Imaging.dll) Version: 3.6.0
SyntaxThe HarrisCornersDetector type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | HarrisCornersDetector |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(Single) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(HarrisCornerMeasure) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(Single, Single) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(HarrisCornerMeasure, Single) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(Single, Single, Double) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(HarrisCornerMeasure, Single, Double) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(Single, Single, Double, Int32) |
Initializes a new instance of the HarrisCornersDetector class.
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| HarrisCornersDetector(HarrisCornerMeasure, Single, Double, Int32) |
Initializes a new instance of the HarrisCornersDetector class.
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Properties| Name | Description | |
|---|---|---|
 | K |
Harris parameter k. Default value is 0.04.
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| Measure |
Gets or sets the measure to use when detecting corners.
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| Sigma |
Gaussian smoothing sigma. Default value is 1.2.
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| Suppression |
Non-maximum suppression window radius. Default value is 3.
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| Threshold |
Harris threshold. Default value is 20000.
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Methods| Name | Description | |
|---|---|---|
| Clone |
Creates a new object that is a copy of the current instance.
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| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ProcessImage(Bitmap) |
Process image looking for corners.
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| ProcessImage(BitmapData) |
Process image looking for corners.
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| ProcessImage(UnmanagedImage) |
Process image looking for corners.
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| ToString | Returns a string that represents the current object. (Inherited from Object.) |
Extension Methods| Name | Description | |
|---|---|---|
 | HasMethod |
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.) |
| IsEqual | Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices. (Defined by Matrix.) |
| ToT |
Converts an object into another type, irrespective of whether
the conversion can be done at compile time or not. This can be
used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.) |
RemarksThis class implements the Harris corners detector.
Sample usage:
// create corners detector's instance HarrisCornersDetector hcd = new HarrisCornersDetector( ); // process image searching for corners Point[] corners = hcd.ProcessImage( image ); // process points foreach ( Point corner in corners ) { // ... }
References:
- P. D. Kovesi. MATLAB and Octave Functions for Computer Vision and Image Processing. School of Computer Science and Software Engineering, The University of Western Australia. Available in: http://www.csse.uwa.edu.au/~pk/Research/MatlabFns/Spatial/harris.m
- C.G. Harris and M.J. Stephens. "A combined corner and edge detector", Proceedings Fourth Alvey Vision Conference, Manchester. pp 147-151, 1988.
- Alison Noble, "Descriptions of Image Surfaces", PhD thesis, Department of Engineering Science, Oxford University 1989, p45.
See Also