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Accord.NET (logo) SpeededUpRobustFeaturesDetector Class
Speeded-up Robust Features (SURF) detector.
Inheritance Hierarchy
SystemObject
  Accord.ImagingSpeededUpRobustFeaturesDetector

Namespace:  Accord.Imaging
Assembly:  Accord.Imaging (in Accord.Imaging.dll) Version: 3.4.0
Syntax
[SerializableAttribute]
public class SpeededUpRobustFeaturesDetector : ICornersDetector, 
	ICloneable, IFeatureDetector<SpeededUpRobustFeaturePoint>, IFeatureDetector<SpeededUpRobustFeaturePoint, double[]>, 
	IDisposable
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The SpeededUpRobustFeaturesDetector type exposes the following members.

Constructors
  NameDescription
Public methodSpeededUpRobustFeaturesDetector
Initializes a new instance of the SpeededUpRobustFeaturesDetector class.
Public methodSpeededUpRobustFeaturesDetector(Single)
Initializes a new instance of the SpeededUpRobustFeaturesDetector class.
Public methodSpeededUpRobustFeaturesDetector(Double, Int32, Int32)
Initializes a new instance of the SpeededUpRobustFeaturesDetector class.
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Properties
  NameDescription
Public propertyComputeDescriptors
Gets or sets a value indicating whether all feature points should have their descriptors computed after being detected. Default is to compute standard descriptors.
Public propertyComputeOrientation
Gets or sets a value indicating whether all feature points should have their orientation computed after being detected. Default is true.
Public propertyOctaves
Gets or sets the number of octaves to use when building the response filter. Each octave corresponds to a series of maps covering a doubling of scale in the image. Default is 5.
Public propertyStep
Gets or sets the initial step to use when building the response filter. Default is 2.
Public propertyThreshold
Gets or sets the non-maximum suppression threshold. Default is 0.0002.
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Methods
  NameDescription
Public methodClone
Creates a new object that is a copy of the current instance.
Public methodDispose
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
Protected methodDispose(Boolean)
Releases unmanaged and - optionally - managed resources.
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetDescriptor
Gets the feature descriptor for the last processed image.
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodProcessImage(Bitmap)
Process image looking for interest points.
Public methodProcessImage(BitmapData)
Process image looking for interest points.
Public methodProcessImage(UnmanagedImage)
Process image looking for interest points.
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
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Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodToTOverloaded.
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.)
Public Extension MethodToTOverloaded.
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 Matrix.)
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Remarks

Based on original implementation in the OpenSURF computer vision library by Christopher Evans (http://www.chrisevansdev.com). Used under the LGPL with permission of the original author.

Be aware that the SURF algorithm is a patented algorithm by Anael Orlinski. If you plan to use it in a commercial application, you may have to acquire a license from the patent holder.

References:

  • E. Christopher. Notes on the OpenSURF Library. Available in: http://sites.google.com/site/chrisevansdev/files/opensurf.pdf
  • 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

See Also