C# Class OpenCvSharp.BOWImgDescriptorExtractor

Brute-force descriptor matcher. For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one.

Inheritance: OpenCvSharp.DisposableCvObject

Exibir arquivo Open project: shimat/opencvsharp

Public Methods

Method	Description
BOWImgDescriptorExtractor ( DescriptorMatcher dmatcher ) : System	The constructor.
BOWImgDescriptorExtractor ( Feature2D dextractor, DescriptorMatcher dmatcher ) : System	The constructor.
Compute ( InputArray image, KeyPoint &keypoints, OutputArray imgDescriptor, int &pointIdxsOfClusters, OpenCvSharp.Mat descriptors = null ) : void	Computes an image descriptor using the set visual vocabulary.
Compute ( InputArray keypointDescriptors, OutputArray imgDescriptor, int &pointIdxsOfClusters ) : void	Computes an image descriptor using the set visual vocabulary.
Compute2 ( OpenCvSharp.Mat image, KeyPoint &keypoints, OpenCvSharp.Mat imgDescriptor ) : void	Computes an image descriptor using the set visual vocabulary.
DescriptorSize ( ) : int	Returns an image descriptor size if the vocabulary is set. Otherwise, it returns 0.
DescriptorType ( ) : int	Returns an image descriptor type.
GetVocabulary ( ) : OpenCvSharp.Mat	Returns the set vocabulary.
SetVocabulary ( OpenCvSharp.Mat vocabulary ) : void	Sets a visual vocabulary.

Method	Description
Dispose ( bool disposing ) : void	Releases the resources

The constructor.

public BOWImgDescriptorExtractor ( DescriptorMatcher dmatcher ) : System
dmatcher	DescriptorMatcher	Descriptor matcher that is used to find the nearest word of the trained vocabulary for each keypoint descriptor of the image.
return	System

The constructor.

public BOWImgDescriptorExtractor ( Feature2D dextractor, DescriptorMatcher dmatcher ) : System
dextractor	Feature2D	Descriptor extractor that is used to compute descriptors for an input image and its keypoints.
dmatcher	DescriptorMatcher	Descriptor matcher that is used to find the nearest word of the trained vocabulary for each keypoint descriptor of the image.
return	System

Computes an image descriptor using the set visual vocabulary.

public Compute ( InputArray image, KeyPoint &keypoints, OutputArray imgDescriptor, int &pointIdxsOfClusters, OpenCvSharp.Mat descriptors = null ) : void
image	InputArray	Image, for which the descriptor is computed.
keypoints	KeyPoint	Keypoints detected in the input image.
imgDescriptor	OutputArray	Computed output image descriptor.
pointIdxsOfClusters	int	pointIdxsOfClusters Indices of keypoints that belong to the cluster. /// This means that pointIdxsOfClusters[i] are keypoint indices that belong to the i -th cluster(word of vocabulary) returned if it is non-zero.
descriptors	OpenCvSharp.Mat	Descriptors of the image keypoints that are returned if they are non-zero.
return	void

Computes an image descriptor using the set visual vocabulary.

public Compute ( InputArray keypointDescriptors, OutputArray imgDescriptor, int &pointIdxsOfClusters ) : void
keypointDescriptors	InputArray	Computed descriptors to match with vocabulary.
imgDescriptor	OutputArray	Computed output image descriptor.
pointIdxsOfClusters	int	Indices of keypoints that belong to the cluster. /// This means that pointIdxsOfClusters[i] are keypoint indices that belong to the i -th cluster(word of vocabulary) returned if it is non-zero.
return	void

Computes an image descriptor using the set visual vocabulary.

public Compute2 ( OpenCvSharp.Mat image, KeyPoint &keypoints, OpenCvSharp.Mat imgDescriptor ) : void
image	OpenCvSharp.Mat	Image, for which the descriptor is computed.
keypoints	KeyPoint	Keypoints detected in the input image.
imgDescriptor	OpenCvSharp.Mat	Computed output image descriptor.
return	void

Returns an image descriptor size if the vocabulary is set. Otherwise, it returns 0.

public DescriptorSize ( ) : int
return	int

Returns an image descriptor type.

public DescriptorType ( ) : int
return	int

Releases the resources

protected Dispose ( bool disposing ) : void
disposing	bool	/// If disposing equals true, the method has been called directly or indirectly by a user's code. Managed and unmanaged resources can be disposed. /// If false, the method has been called by the runtime from inside the finalizer and you should not reference other objects. Only unmanaged resources can be disposed. ///
return	void

Returns the set vocabulary.

public GetVocabulary ( ) : OpenCvSharp.Mat
return	OpenCvSharp.Mat

Sets a visual vocabulary.

public SetVocabulary ( OpenCvSharp.Mat vocabulary ) : void
vocabulary	OpenCvSharp.Mat	Vocabulary (can be trained using the inheritor of BOWTrainer ). /// Each row of the vocabulary is a visual word(cluster center).
return	void