Abstract base class for 2D image feature detectors and descriptor extractors [詳解]

#include <features2d.hpp>

cv::Algorithmを継承しています。

cv::AKAZE, cv::AffineFeature, cv::AgastFeatureDetector, cv::BRISK, cv::FastFeatureDetector, cv::GFTTDetector, cv::KAZE, cv::MSER, cv::ORB, cv::SIFT, cv::SimpleBlobDetector, cv::xfeatures2d::AffineFeature2D, cv::xfeatures2d::BEBLID, cv::xfeatures2d::BoostDesc, cv::xfeatures2d::BriefDescriptorExtractor, cv::xfeatures2d::DAISY, cv::xfeatures2d::FREAK, cv::xfeatures2d::HarrisLaplaceFeatureDetector, cv::xfeatures2d::LATCH, cv::xfeatures2d::LUCID, cv::xfeatures2d::MSDDetector, cv::xfeatures2d::SURF, cv::xfeatures2d::StarDetector, cv::xfeatures2d::VGG (計24項目)に継承されています。

公開メンバ関数
virtual CV_WRAP void	detect (InputArray image, CV_OUT std::vector< KeyPoint > &keypoints, InputArray mask=noArray())
	Detects keypoints in an image (first variant) or image set (second variant). [詳解]

virtual CV_WRAP void	detect (InputArrayOfArrays images, CV_OUT std::vector< std::vector< KeyPoint > > &keypoints, InputArrayOfArrays masks=noArray())

virtual CV_WRAP void	compute (InputArray image, CV_OUT CV_IN_OUT std::vector< KeyPoint > &keypoints, OutputArray descriptors)
	Computes the descriptors for a set of keypoints detected in an image (first variant) or image set (second variant). [詳解]

virtual CV_WRAP void	compute (InputArrayOfArrays images, CV_OUT CV_IN_OUT std::vector< std::vector< KeyPoint > > &keypoints, OutputArrayOfArrays descriptors)

virtual CV_WRAP void	detectAndCompute (InputArray image, InputArray mask, CV_OUT std::vector< KeyPoint > &keypoints, OutputArray descriptors, bool useProvidedKeypoints=false)

virtual CV_WRAP int	descriptorSize () const

virtual CV_WRAP int	descriptorType () const

virtual CV_WRAP int	defaultNorm () const

CV_WRAP void	write (const String &fileName) const

CV_WRAP void	read (const String &fileName)

virtual void	write (FileStorage &) const CV_OVERRIDE
	Stores algorithm parameters in a file storage [詳解]

virtual CV_WRAP void	read (const FileNode &) CV_OVERRIDE
	Reads algorithm parameters from a file storage [詳解]

virtual CV_WRAP bool	empty () const CV_OVERRIDE
	Return true if detector object is empty [詳解]

virtual CV_WRAP String	getDefaultName () const CV_OVERRIDE

CV_WRAP void	write (const Ptr< FileStorage > &fs, const String &name=String()) const

基底クラス cv::Algorithm に属する継承公開メンバ関数
virtual CV_WRAP void	clear ()
	Clears the algorithm state [詳解]

CV_WRAP void	write (const Ptr< FileStorage > &fs, const String &name=String()) const
	simplified API for language bindings これはオーバーロードされたメンバ関数です。利便性のために用意されています。元の関数との違いは引き数のみです。

virtual CV_WRAP void	save (const String &filename) const

その他の継承メンバ
基底クラス cv::Algorithm に属する継承静的公開メンバ関数
template<typename _Tp >
static Ptr< _Tp >	read (const FileNode &fn)
	Reads algorithm from the file node [詳解]

template<typename _Tp >
static Ptr< _Tp >	load (const String &filename, const String &objname=String())
	Loads algorithm from the file [詳解]

template<typename _Tp >
static Ptr< _Tp >	loadFromString (const String &strModel, const String &objname=String())
	Loads algorithm from a String [詳解]

基底クラス cv::Algorithm に属する継承限定公開メンバ関数
void	writeFormat (FileStorage &fs) const

詳解

Abstract base class for 2D image feature detectors and descriptor extractors

関数詳解

◆ compute() [1/2]

virtual CV_WRAP void cv::Feature2D::compute	(	InputArray	image,
		CV_OUT CV_IN_OUT std::vector< KeyPoint > &	keypoints,
		OutputArray	descriptors
	)

virtual

Computes the descriptors for a set of keypoints detected in an image (first variant) or image set (second variant).

引数

image	Image.
keypoints	Input collection of keypoints. Keypoints for which a descriptor cannot be computed are removed. Sometimes new keypoints can be added, for example: SIFT duplicates keypoint with several dominant orientations (for each orientation).
descriptors	Computed descriptors. In the second variant of the method descriptors[i] are descriptors computed for a keypoints[i]. Row j is the keypoints (or keypoints[i]) is the descriptor for keypoint j-th keypoint.

◆ compute() [2/2]

virtual CV_WRAP void cv::Feature2D::compute	(	InputArrayOfArrays	images,
		CV_OUT CV_IN_OUT std::vector< std::vector< KeyPoint > > &	keypoints,
		OutputArrayOfArrays	descriptors
	)

virtual

これはオーバーロードされたメンバ関数です。利便性のために用意されています。元の関数との違いは引き数のみです。

引数

images	Image set.
keypoints	Input collection of keypoints. Keypoints for which a descriptor cannot be computed are removed. Sometimes new keypoints can be added, for example: SIFT duplicates keypoint with several dominant orientations (for each orientation).
descriptors	Computed descriptors. In the second variant of the method descriptors[i] are descriptors computed for a keypoints[i]. Row j is the keypoints (or keypoints[i]) is the descriptor for keypoint j-th keypoint.

◆ detect() [1/2]

virtual CV_WRAP void cv::Feature2D::detect	(	InputArray	image,
		CV_OUT std::vector< KeyPoint > &	keypoints,
		InputArray	mask = `noArray()`
	)

virtual

Detects keypoints in an image (first variant) or image set (second variant).

引数

image	Image.
keypoints	The detected keypoints. In the second variant of the method keypoints[i] is a set of keypoints detected in images[i] .
mask	Mask specifying where to look for keypoints (optional). It must be a 8-bit integer matrix with non-zero values in the region of interest.

cv::xfeatures2d::AffineFeature2Dで再実装されています。

◆ detect() [2/2]

virtual CV_WRAP void cv::Feature2D::detect	(	InputArrayOfArrays	images,
		CV_OUT std::vector< std::vector< KeyPoint > > &	keypoints,
		InputArrayOfArrays	masks = `noArray()`
	)

virtual

これはオーバーロードされたメンバ関数です。利便性のために用意されています。元の関数との違いは引き数のみです。

引数

images	Image set.
keypoints	The detected keypoints. In the second variant of the method keypoints[i] is a set of keypoints detected in images[i] .
masks	Masks for each input image specifying where to look for keypoints (optional). masks[i] is a mask for images[i].

cv::xfeatures2d::AffineFeature2Dで再実装されています。

◆ detectAndCompute()

virtual CV_WRAP void cv::Feature2D::detectAndCompute	(	InputArray	image,
		InputArray	mask,
		CV_OUT std::vector< KeyPoint > &	keypoints,
		OutputArray	descriptors,
		bool	useProvidedKeypoints = `false`
	)

virtual

Detects keypoints and computes the descriptors

cv::xfeatures2d::AffineFeature2Dで再実装されています。

◆ empty()

virtual CV_WRAP bool cv::Feature2D::empty ( ) const

virtual

Return true if detector object is empty

cv::Algorithmを再実装しています。

◆ getDefaultName()

virtual CV_WRAP String cv::Feature2D::getDefaultName ( ) const

virtual

Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.

cv::Algorithmを再実装しています。

cv::AffineFeature, cv::SIFT, cv::BRISK, cv::ORB, cv::MSER, cv::FastFeatureDetector, cv::AgastFeatureDetector, cv::GFTTDetector, cv::SimpleBlobDetector, cv::KAZE, cv::AKAZEで再実装されています。

◆ read()

virtual CV_WRAP void cv::Feature2D::read ( const FileNode & fn )

virtual

Reads algorithm parameters from a file storage

cv::Algorithmを再実装しています。

◆ write()

virtual void cv::Feature2D::write ( FileStorage & fs ) const

virtual

Stores algorithm parameters in a file storage

cv::Algorithmを再実装しています。

このクラス詳解は次のファイルから抽出されました:

features2d.hpp

公開メンバ関数

その他の継承メンバ

詳解

関数詳解

◆ compute() [1/2]

◆ compute() [2/2]

◆ detect() [1/2]

◆ detect() [2/2]

◆ detectAndCompute()

◆ empty()

◆ getDefaultName()

◆ read()

◆ write()