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yet another attempt to refactor features2d; the first commit, features2d does not even compile

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pull/3339/head
Vadim Pisarevsky 11 years ago
parent af1d29db83
commit 2e915026a0
13 changed files with 417 additions and 786 deletions
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  1. 420
      modules/features2d/include/opencv2/features2d.hpp
  2. 27
      modules/features2d/src/blobdetector.cpp
  3. 73
      modules/features2d/src/brisk.cpp
  4. 110
      modules/features2d/src/descriptors.cpp
  5. 101
      modules/features2d/src/detectors.cpp
  6. 29
      modules/features2d/src/fast.cpp
  7. 4
      modules/features2d/src/features2d_init.cpp
  8. 100
      modules/features2d/src/kaze.cpp
  9. 21
      modules/features2d/src/kaze/AKAZEConfig.h
  10. 39
      modules/features2d/src/kaze/AKAZEFeatures.cpp
  11. 6
      modules/features2d/src/kaze/KAZEConfig.h
  12. 5
      modules/features2d/src/kaze/KAZEFeatures.h
  13. 68
      modules/features2d/src/orb.cpp

420
modules/features2d/include/opencv2/features2d.hpp
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@ -49,8 +49,6 @@
namespace cv
{
CV_EXPORTS bool initModule_features2d(void);
// //! writes vector of keypoints to the file storage
// CV_EXPORTS void write(FileStorage& fs, const String& name, const std::vector<KeyPoint>& keypoints);
// //! reads vector of keypoints from the specified file storage node
@ -94,12 +92,12 @@ public:
/************************************ Base Classes ************************************/
/*
* Abstract base class for 2D image feature detectors.
* Abstract base class for 2D image feature detectors and descriptor extractors
*/
class CV_EXPORTS_W FeatureDetector : public virtual Algorithm
class CV_EXPORTS_W Feature2D : public virtual Algorithm
{
public:
virtual ~FeatureDetector();
virtual ~Feature2D();
/*
* Detect keypoints in an image.
@ -108,47 +106,9 @@ public:
* mask Mask specifying where to look for keypoints (optional). Must be a char
* matrix with non-zero values in the region of interest.
*/
CV_WRAP void detect( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
/*
* Detect keypoints in an image set.
* images Image collection.
* keypoints Collection of keypoints detected in an input images. keypoints[i] is a set of keypoints detected in an images[i].
* masks Masks for image set. masks[i] is a mask for images[i].
*/
void detect( InputArrayOfArrays images, std::vector<std::vector<KeyPoint> >& keypoints, InputArrayOfArrays masks=noArray() ) const;
// Return true if detector object is empty
CV_WRAP virtual bool empty() const;
// Create feature detector by detector name.
CV_WRAP static Ptr<FeatureDetector> create( const String& detectorType );
protected:
virtual void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const = 0;
/*
* Remove keypoints that are not in the mask.
* Helper function, useful when wrapping a library call for keypoint detection that
* does not support a mask argument.
*/
static void removeInvalidPoints( const Mat & mask, std::vector<KeyPoint>& keypoints );
};
/*
* Abstract base class for computing descriptors for image keypoints.
*
* In this interface we assume a keypoint descriptor can be represented as a
* dense, fixed-dimensional vector of some basic type. Most descriptors used
* in practice follow this pattern, as it makes it very easy to compute
* distances between descriptors. Therefore we represent a collection of
* descriptors as a Mat, where each row is one keypoint descriptor.
*/
class CV_EXPORTS_W DescriptorExtractor : public virtual Algorithm
{
public:
virtual ~DescriptorExtractor();
CV_WRAP virtual void detect( InputArray image,
CV_OUT std::vector<KeyPoint>& keypoints,
InputArray mask=noArray() );
/*
* Compute the descriptors for a set of keypoints in an image.
@ -156,157 +116,39 @@ public:
* keypoints The input keypoints. Keypoints for which a descriptor cannot be computed are removed.
* descriptors Copmputed descriptors. Row i is the descriptor for keypoint i.
*/
CV_WRAP void compute( InputArray image, CV_OUT CV_IN_OUT std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const;
/*
* Compute the descriptors for a keypoints collection detected in image collection.
* images Image collection.
* keypoints Input keypoints collection. keypoints[i] is keypoints detected in images[i].
* Keypoints for which a descriptor cannot be computed are removed.
* descriptors Descriptor collection. descriptors[i] are descriptors computed for set keypoints[i].
*/
void compute( InputArrayOfArrays images, std::vector<std::vector<KeyPoint> >& keypoints, OutputArrayOfArrays descriptors ) const;
CV_WRAP virtual int descriptorSize() const = 0;
CV_WRAP virtual int descriptorType() const = 0;
CV_WRAP virtual int defaultNorm() const = 0;
CV_WRAP virtual bool empty() const;
CV_WRAP static Ptr<DescriptorExtractor> create( const String& descriptorExtractorType );
protected:
virtual void computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const = 0;
/*
* Remove keypoints within borderPixels of an image edge.
*/
static void removeBorderKeypoints( std::vector<KeyPoint>& keypoints,
Size imageSize, int borderSize );
};
CV_WRAP virtual void compute( InputArray image,
CV_OUT CV_IN_OUT std::vector<KeyPoint>& keypoints,
OutputArray descriptors );
/*
* Abstract base class for simultaneous 2D feature detection descriptor extraction.
*/
class CV_EXPORTS_W Feature2D : public FeatureDetector, public DescriptorExtractor
{
public:
/*
* Detect keypoints in an image.
* image The image.
* keypoints The detected keypoints.
* mask Mask specifying where to look for keypoints (optional). Must be a char
* matrix with non-zero values in the region of interest.
* useProvidedKeypoints If true, the method will skip the detection phase and will compute
* descriptors for the provided keypoints
*/
CV_WRAP_AS(detectAndCompute) virtual void operator()( InputArray image, InputArray mask,
/* Detects keypoints and computes the descriptors */
CV_WRAP virtual void detectAndCompute( InputArray image, InputArray mask,
CV_OUT std::vector<KeyPoint>& keypoints,
OutputArray descriptors,
bool useProvidedKeypoints=false ) const = 0;
bool useProvidedKeypoints=false );
CV_WRAP void compute( InputArray image, CV_OUT CV_IN_OUT std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const;
CV_WRAP virtual int descriptorSize() const;
CV_WRAP virtual int descriptorType() const;
CV_WRAP virtual int defaultNorm() const;
// Create feature detector and descriptor extractor by name.
CV_WRAP static Ptr<Feature2D> create( const String& name );
// Return true if detector object is empty
CV_WRAP virtual bool empty() const;
};
typedef Feature2D FeatureDetector;
typedef Feature2D DescriptorExtractor;
/*!
BRISK implementation
*/
class CV_EXPORTS_W BRISK : public Feature2D
{
public:
CV_WRAP explicit BRISK(int thresh=30, int octaves=3, float patternScale=1.0f);
virtual ~BRISK();
// returns the descriptor size in bytes
int descriptorSize() const;
// returns the descriptor type
int descriptorType() const;
// returns the default norm type
int defaultNorm() const;
// Compute the BRISK features on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
// Compute the BRISK features and descriptors on an image
void operator()( InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool useProvidedKeypoints=false ) const;
AlgorithmInfo* info() const;
CV_WRAP static Ptr<BRISK> create(int thresh=30, int octaves=3, float patternScale=1.0f);
// custom setup
CV_WRAP explicit BRISK(std::vector<float> &radiusList, std::vector<int> &numberList,
float dMax=5.85f, float dMin=8.2f, std::vector<int> indexChange=std::vector<int>());
// call this to generate the kernel:
// circle of radius r (pixels), with n points;
// short pairings with dMax, long pairings with dMin
CV_WRAP void generateKernel(std::vector<float> &radiusList,
std::vector<int> &numberList, float dMax=5.85f, float dMin=8.2f,
std::vector<int> indexChange=std::vector<int>());
protected:
void computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const;
void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
void computeKeypointsNoOrientation(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
void computeDescriptorsAndOrOrientation(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool doDescriptors, bool doOrientation,
bool useProvidedKeypoints) const;
// Feature parameters
CV_PROP_RW int threshold;
CV_PROP_RW int octaves;
// some helper structures for the Brisk pattern representation
struct BriskPatternPoint{
float x; // x coordinate relative to center
float y; // x coordinate relative to center
float sigma; // Gaussian smoothing sigma
};
struct BriskShortPair{
unsigned int i; // index of the first pattern point
unsigned int j; // index of other pattern point
};
struct BriskLongPair{
unsigned int i; // index of the first pattern point
unsigned int j; // index of other pattern point
int weighted_dx; // 1024.0/dx
int weighted_dy; // 1024.0/dy
};
inline int smoothedIntensity(const cv::Mat& image,
const cv::Mat& integral,const float key_x,
const float key_y, const unsigned int scale,
const unsigned int rot, const unsigned int point) const;
// pattern properties
BriskPatternPoint* patternPoints_; //[i][rotation][scale]
unsigned int points_; // total number of collocation points
float* scaleList_; // lists the scaling per scale index [scale]
unsigned int* sizeList_; // lists the total pattern size per scale index [scale]
static const unsigned int scales_; // scales discretization
static const float scalerange_; // span of sizes 40->4 Octaves - else, this needs to be adjusted...
static const unsigned int n_rot_; // discretization of the rotation look-up
// pairs
int strings_; // number of uchars the descriptor consists of
float dMax_; // short pair maximum distance
float dMin_; // long pair maximum distance
BriskShortPair* shortPairs_; // d<_dMax
BriskLongPair* longPairs_; // d>_dMin
unsigned int noShortPairs_; // number of shortParis
unsigned int noLongPairs_; // number of longParis
// general
static const float basicSize_;
CV_WRAP static Ptr<BRISK> create(const std::vector<float> &radiusList, const std::vector<int> &numberList,
float dMax=5.85f, float dMin=8.2f, const std::vector<int> indexChange=std::vector<int>());
};
/*!
ORB implementation.
*/
@ -316,44 +158,10 @@ public:
// the size of the signature in bytes
enum { kBytes = 32, HARRIS_SCORE=0, FAST_SCORE=1 };
CV_WRAP explicit ORB(int nfeatures = 500, float scaleFactor = 1.2f, int nlevels = 8, int edgeThreshold = 31,
CV_WRAP static Ptr<ORB> create(int nfeatures = 500, float scaleFactor = 1.2f, int nlevels = 8, int edgeThreshold = 31,
int firstLevel = 0, int WTA_K=2, int scoreType=ORB::HARRIS_SCORE, int patchSize=31, int fastThreshold = 20);
// returns the descriptor size in bytes
int descriptorSize() const;
// returns the descriptor type
int descriptorType() const;
// returns the default norm type
int defaultNorm() const;
// Compute the ORB features and descriptors on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
// Compute the ORB features and descriptors on an image
void operator()( InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool useProvidedKeypoints=false ) const;
AlgorithmInfo* info() const;
protected:
void computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const;
void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
CV_PROP_RW int nfeatures;
CV_PROP_RW double scaleFactor;
CV_PROP_RW int nlevels;
CV_PROP_RW int edgeThreshold;
CV_PROP_RW int firstLevel;
CV_PROP_RW int WTA_K;
CV_PROP_RW int scoreType;
CV_PROP_RW int patchSize;
CV_PROP_RW int fastThreshold;
};
typedef ORB OrbFeatureDetector;
typedef ORB OrbDescriptorExtractor;
/*!
Maximal Stable Extremal Regions class.
@ -363,36 +171,19 @@ typedef ORB OrbDescriptorExtractor;
It returns the regions, each of those is encoded as a contour.
*/
class CV_EXPORTS_W MSER : public FeatureDetector
class CV_EXPORTS_W MSER : public Feature2D
{
public:
//! the full constructor
CV_WRAP explicit MSER( int _delta=5, int _min_area=60, int _max_area=14400,
CV_WRAP static Ptr<MSER> create( int _delta=5, int _min_area=60, int _max_area=14400,
double _max_variation=0.25, double _min_diversity=.2,
int _max_evolution=200, double _area_threshold=1.01,
double _min_margin=0.003, int _edge_blur_size=5 );
//! the operator that extracts the MSERs from the image or the specific part of it
CV_WRAP_AS(detect) void operator()( InputArray image, CV_OUT std::vector<std::vector<Point> >& msers,
InputArray mask=noArray() ) const;
AlgorithmInfo* info() const;
protected:
void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
int delta;
int minArea;
int maxArea;
double maxVariation;
double minDiversity;
int maxEvolution;
double areaThreshold;
double minMargin;
int edgeBlurSize;
CV_WRAP virtual int detectAndLabel( InputArray image, OutputArray label,
OutputArray stats=noArray() ) const = 0;
};
typedef MSER MserFeatureDetector;
//! detects corners using FAST algorithm by E. Rosten
CV_EXPORTS void FAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
int threshold, bool nonmaxSuppression=true );
@ -400,7 +191,7 @@ CV_EXPORTS void FAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
CV_EXPORTS void FAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
int threshold, bool nonmaxSuppression, int type );
class CV_EXPORTS_W FastFeatureDetector : public FeatureDetector
class CV_EXPORTS_W FastFeatureDetector : public Feature2D
{
public:
enum Type
@ -408,40 +199,19 @@ public:
TYPE_5_8 = 0, TYPE_7_12 = 1, TYPE_9_16 = 2
};
CV_WRAP FastFeatureDetector( int threshold=10, bool nonmaxSuppression=true);
CV_WRAP FastFeatureDetector( int threshold, bool nonmaxSuppression, int type);
AlgorithmInfo* info() const;
protected:
virtual void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
int threshold;
bool nonmaxSuppression;
int type;
CV_WRAP static Ptr<FastFeatureDetector> create( int threshold=10, bool nonmaxSuppression=true, int type=TYPE_9_16 );
};
class CV_EXPORTS_W GFTTDetector : public FeatureDetector
class CV_EXPORTS_W GFTTDetector : public Feature2D
{
public:
CV_WRAP GFTTDetector( int maxCorners=1000, double qualityLevel=0.01, double minDistance=1,
CV_WRAP static Ptr<GFTTDetector> create( int maxCorners=1000, double qualityLevel=0.01, double minDistance=1,
int blockSize=3, bool useHarrisDetector=false, double k=0.04 );
AlgorithmInfo* info() const;
protected:
virtual void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
int nfeatures;
double qualityLevel;
double minDistance;
int blockSize;
bool useHarrisDetector;
double k;
};
typedef GFTTDetector GoodFeaturesToTrackDetector;
class CV_EXPORTS_W SimpleBlobDetector : public FeatureDetector
class CV_EXPORTS_W SimpleBlobDetector : public Feature2D
{
public:
struct CV_EXPORTS_W_SIMPLE Params
@ -472,81 +242,29 @@ public:
void write( FileStorage& fs ) const;
};
CV_WRAP SimpleBlobDetector(const SimpleBlobDetector::Params &parameters = SimpleBlobDetector::Params());
virtual void read( const FileNode& fn );
virtual void write( FileStorage& fs ) const;
protected:
struct CV_EXPORTS Center
{
Point2d location;
double radius;
double confidence;
};
virtual void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
virtual void findBlobs(InputArray image, InputArray binaryImage, std::vector<Center> &centers) const;
Params params;
AlgorithmInfo* info() const;
CV_WRAP static Ptr<SimpleBlobDetector>
create(const SimpleBlobDetector::Params &parameters = SimpleBlobDetector::Params());
};
// KAZE/AKAZE diffusivity
enum {
DIFF_PM_G1 = 0,
DIFF_PM_G2 = 1,
DIFF_WEICKERT = 2,
DIFF_CHARBONNIER = 3
};
// AKAZE descriptor type
enum {
DESCRIPTOR_KAZE_UPRIGHT = 2, ///< Upright descriptors, not invariant to rotation
DESCRIPTOR_KAZE = 3,
DESCRIPTOR_MLDB_UPRIGHT = 4, ///< Upright descriptors, not invariant to rotation
DESCRIPTOR_MLDB = 5
};
/*!
KAZE implementation
*/
class CV_EXPORTS_W KAZE : public Feature2D
{
public:
CV_WRAP KAZE();
CV_WRAP explicit KAZE(bool extended, bool upright, float threshold = 0.001f,
int octaves = 4, int sublevels = 4, int diffusivity = DIFF_PM_G2);
virtual ~KAZE();
// returns the descriptor size in bytes
int descriptorSize() const;
// returns the descriptor type
int descriptorType() const;
// returns the default norm type
int defaultNorm() const;
AlgorithmInfo* info() const;
// Compute the KAZE features on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
// Compute the KAZE features and descriptors on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool useProvidedKeypoints = false) const;
enum
{
DIFF_PM_G1 = 0,
DIFF_PM_G2 = 1,
DIFF_WEICKERT = 2,
DIFF_CHARBONNIER = 3
};
protected:
void detectImpl(InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask) const;
void computeImpl(InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors) const;
CV_PROP bool extended;
CV_PROP bool upright;
CV_PROP float threshold;
CV_PROP int octaves;
CV_PROP int sublevels;
CV_PROP int diffusivity;
CV_WRAP static Ptr<KAZE> create(bool extended=false, bool upright=false,
float threshold = 0.001f,
int octaves = 4, int sublevels = 4,
int diffusivity = KAZE::DIFF_PM_G2);
};
/*!
@ -555,41 +273,21 @@ AKAZE implementation
class CV_EXPORTS_W AKAZE : public Feature2D
{
public:
CV_WRAP AKAZE();
CV_WRAP explicit AKAZE(int descriptor_type, int descriptor_size = 0, int descriptor_channels = 3,
float threshold = 0.001f, int octaves = 4, int sublevels = 4, int diffusivity = DIFF_PM_G2);
virtual ~AKAZE();
// returns the descriptor size in bytes
int descriptorSize() const;
// returns the descriptor type
int descriptorType() const;
// returns the default norm type
int defaultNorm() const;
// Compute the AKAZE features on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
// Compute the AKAZE features and descriptors on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool useProvidedKeypoints = false) const;
AlgorithmInfo* info() const;
protected:
void computeImpl(InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors) const;
void detectImpl(InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask = noArray()) const;
// AKAZE descriptor type
enum
{
DESCRIPTOR_KAZE_UPRIGHT = 2, ///< Upright descriptors, not invariant to rotation
DESCRIPTOR_KAZE = 3,
DESCRIPTOR_MLDB_UPRIGHT = 4, ///< Upright descriptors, not invariant to rotation
DESCRIPTOR_MLDB = 5
};
CV_PROP int descriptor;
CV_PROP int descriptor_channels;
CV_PROP int descriptor_size;
CV_PROP float threshold;
CV_PROP int octaves;
CV_PROP int sublevels;
CV_PROP int diffusivity;
CV_WRAP static Ptr<AKAZE> create(int descriptor_type=DESCRIPTOR_MLDB,
int descriptor_size = 0, int descriptor_channels = 3,
float threshold = 0.001f, int octaves = 4,
int sublevels = 4, int diffusivity = KAZE::DIFF_PM_G2);
};
/****************************************************************************************\
* Distance *
\****************************************************************************************/

27
modules/features2d/src/blobdetector.cpp
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@ -55,7 +55,32 @@
# endif
#endif
using namespace cv;
namespace cv
{
class CV_EXPORTS_W SimpleBlobDetectorImpl : public SimpleBlobDetector
{
public:
explicit SimpleBlobDetectorImpl(const SimpleBlobDetector::Params &parameters = SimpleBlobDetector::Params());
virtual void read( const FileNode& fn );
virtual void write( FileStorage& fs ) const;
protected:
struct CV_EXPORTS Center
{
Point2d location;
double radius;
double confidence;
};
virtual void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
virtual void findBlobs(InputArray image, InputArray binaryImage, std::vector<Center> &centers) const;
Params params;
AlgorithmInfo* info() const;
};
/*
* SimpleBlobDetector

73
modules/features2d/src/brisk.cpp
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@ -53,6 +53,79 @@
namespace cv
{
class BRISK_Impl : public BRISK
{
public:
explicit BRISK_Impl(int thresh=30, int octaves=3, float patternScale=1.0f);
// custom setup
explicit BRISK_Impl(const std::vector<float> &radiusList, const std::vector<int> &numberList,
float dMax=5.85f, float dMin=8.2f, const std::vector<int> indexChange=std::vector<int>());
// call this to generate the kernel:
// circle of radius r (pixels), with n points;
// short pairings with dMax, long pairings with dMin
void generateKernel(std::vector<float> &radiusList,
std::vector<int> &numberList, float dMax=5.85f, float dMin=8.2f,
std::vector<int> indexChange=std::vector<int>());
protected:
void computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const;
void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
void computeKeypointsNoOrientation(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
void computeDescriptorsAndOrOrientation(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool doDescriptors, bool doOrientation,
bool useProvidedKeypoints) const;
// Feature parameters
CV_PROP_RW int threshold;
CV_PROP_RW int octaves;
// some helper structures for the Brisk pattern representation
struct BriskPatternPoint{
float x; // x coordinate relative to center
float y; // x coordinate relative to center
float sigma; // Gaussian smoothing sigma
};
struct BriskShortPair{
unsigned int i; // index of the first pattern point
unsigned int j; // index of other pattern point
};
struct BriskLongPair{
unsigned int i; // index of the first pattern point
unsigned int j; // index of other pattern point
int weighted_dx; // 1024.0/dx
int weighted_dy; // 1024.0/dy
};
inline int smoothedIntensity(const cv::Mat& image,
const cv::Mat& integral,const float key_x,
const float key_y, const unsigned int scale,
const unsigned int rot, const unsigned int point) const;
// pattern properties
BriskPatternPoint* patternPoints_; //[i][rotation][scale]
unsigned int points_; // total number of collocation points
float* scaleList_; // lists the scaling per scale index [scale]
unsigned int* sizeList_; // lists the total pattern size per scale index [scale]
static const unsigned int scales_; // scales discretization
static const float scalerange_; // span of sizes 40->4 Octaves - else, this needs to be adjusted...
static const unsigned int n_rot_; // discretization of the rotation look-up
// pairs
int strings_; // number of uchars the descriptor consists of
float dMax_; // short pair maximum distance
float dMin_; // long pair maximum distance
BriskShortPair* shortPairs_; // d<_dMax
BriskLongPair* longPairs_; // d>_dMin
unsigned int noShortPairs_; // number of shortParis
unsigned int noLongPairs_; // number of longParis
// general
static const float basicSize_;
};
// a layer in the Brisk detector pyramid
class CV_EXPORTS BriskLayer
{

110
modules/features2d/src/descriptors.cpp
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@ -1,110 +0,0 @@
/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// Intel License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of Intel Corporation may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
#include <limits>
namespace cv
{
/****************************************************************************************\
* DescriptorExtractor *
\****************************************************************************************/
/*
* DescriptorExtractor
*/
DescriptorExtractor::~DescriptorExtractor()
{}
void DescriptorExtractor::compute( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const
{
if( image.empty() || keypoints.empty() )
{
descriptors.release();
return;
}
KeyPointsFilter::runByImageBorder( keypoints, image.size(), 0 );
KeyPointsFilter::runByKeypointSize( keypoints, std::numeric_limits<float>::epsilon() );
computeImpl( image, keypoints, descriptors );
}
void DescriptorExtractor::compute( InputArrayOfArrays _imageCollection, std::vector<std::vector<KeyPoint> >& pointCollection, OutputArrayOfArrays _descCollection ) const
{
std::vector<Mat> imageCollection, descCollection;
_imageCollection.getMatVector(imageCollection);
_descCollection.getMatVector(descCollection);
CV_Assert( imageCollection.size() == pointCollection.size() );
descCollection.resize( imageCollection.size() );
for( size_t i = 0; i < imageCollection.size(); i++ )
compute( imageCollection[i], pointCollection[i], descCollection[i] );
}
/*void DescriptorExtractor::read( const FileNode& )
{}
void DescriptorExtractor::write( FileStorage& ) const
{}*/
bool DescriptorExtractor::empty() const
{
return false;
}
void DescriptorExtractor::removeBorderKeypoints( std::vector<KeyPoint>& keypoints,
Size imageSize, int borderSize )
{
KeyPointsFilter::runByImageBorder( keypoints, imageSize, borderSize );
}
Ptr<DescriptorExtractor> DescriptorExtractor::create(const String& descriptorExtractorType)
{
return Algorithm::create<DescriptorExtractor>("Feature2D." + descriptorExtractorType);
}
CV_WRAP void Feature2D::compute( InputArray image, CV_OUT CV_IN_OUT std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const
{
DescriptorExtractor::compute(image, keypoints, descriptors);
}
}

101
modules/features2d/src/detectors.cpp
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@ -44,89 +44,19 @@
namespace cv
{
/*
* FeatureDetector
*/
FeatureDetector::~FeatureDetector()
{}
void FeatureDetector::detect( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask ) const
{
keypoints.clear();
if( image.empty() )
return;
CV_Assert( mask.empty() || (mask.type() == CV_8UC1 && mask.size() == image.size()) );
detectImpl( image, keypoints, mask );
}
void FeatureDetector::detect(InputArrayOfArrays _imageCollection, std::vector<std::vector<KeyPoint> >& pointCollection,
InputArrayOfArrays _masks ) const
{
if (_imageCollection.isUMatVector())
{
std::vector<UMat> uimageCollection, umasks;
_imageCollection.getUMatVector(uimageCollection);
_masks.getUMatVector(umasks);
pointCollection.resize( uimageCollection.size() );
for( size_t i = 0; i < uimageCollection.size(); i++ )
detect( uimageCollection[i], pointCollection[i], umasks.empty() ? noArray() : umasks[i] );
return;
}
std::vector<Mat> imageCollection, masks;
_imageCollection.getMatVector(imageCollection);
_masks.getMatVector(masks);
pointCollection.resize( imageCollection.size() );
for( size_t i = 0; i < imageCollection.size(); i++ )
detect( imageCollection[i], pointCollection[i], masks.empty() ? noArray() : masks[i] );
}
/*void FeatureDetector::read( const FileNode& )
{}
void FeatureDetector::write( FileStorage& ) const
{}*/
bool FeatureDetector::empty() const
{
return false;
}
void FeatureDetector::removeInvalidPoints( const Mat& mask, std::vector<KeyPoint>& keypoints )
class GFTTDetector_Impl : public GFTTDetector
{
KeyPointsFilter::runByPixelsMask( keypoints, mask );
}
Ptr<FeatureDetector> FeatureDetector::create( const String& detectorType )
{
if( detectorType.compare( "HARRIS" ) == 0 )
{
Ptr<FeatureDetector> fd = FeatureDetector::create("GFTT");
fd->set("useHarrisDetector", true);
return fd;
}
return Algorithm::create<FeatureDetector>("Feature2D." + detectorType);
}
GFTTDetector::GFTTDetector( int _nfeatures, double _qualityLevel,
public:
GFTTDetector_Impl( int _nfeatures, double _qualityLevel,
double _minDistance, int _blockSize,
bool _useHarrisDetector, double _k )
: nfeatures(_nfeatures), qualityLevel(_qualityLevel), minDistance(_minDistance),
blockSize(_blockSize), useHarrisDetector(_useHarrisDetector), k(_k)
{
}
{
}
void GFTTDetector::detectImpl( InputArray _image, std::vector<KeyPoint>& keypoints, InputArray _mask) const
{
void detect( InputArray _image, std::vector<KeyPoint>& keypoints, InputArray _mask )
{
std::vector<Point2f> corners;
if (_image.isUMat())
@ -156,6 +86,23 @@ void GFTTDetector::detectImpl( InputArray _image, std::vector<KeyPoint>& keypoin
for( ; corner_it != corners.end(); ++corner_it, ++keypoint_it )
*keypoint_it = KeyPoint( *corner_it, (float)blockSize );
}
int nfeatures;
double qualityLevel;
double minDistance;
int blockSize;
bool useHarrisDetector;
double k;
};
Ptr<GFTTDetector> GFTTDetector::create( int _nfeatures, double _qualityLevel,
double _minDistance, int _blockSize,
bool _useHarrisDetector, double _k )
{
return makePtr<GFTTDetector_Impl>(_nfeatures, _qualityLevel,
_minDistance, _blockSize, _useHarrisDetector, _k);
}
}

29
modules/features2d/src/fast.cpp
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@ -359,19 +359,17 @@ void FAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, bool
{
FAST(_img, keypoints, threshold, nonmax_suppression, FastFeatureDetector::TYPE_9_16);
}
/*
* FastFeatureDetector
*/
FastFeatureDetector::FastFeatureDetector( int _threshold, bool _nonmaxSuppression )
: threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type(FastFeatureDetector::TYPE_9_16)
{}
FastFeatureDetector::FastFeatureDetector( int _threshold, bool _nonmaxSuppression, int _type )
: threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type((short)_type)
{}
void FastFeatureDetector::detectImpl( InputArray _image, std::vector<KeyPoint>& keypoints, InputArray _mask ) const
class FastFeatureDetector_Impl : public FastFeatureDetector
{
public:
FastFeatureDetector_Impl( int _threshold, bool _nonmaxSuppression, int _type )
: threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type((short)_type)
{}
void detect( InputArray _image, std::vector<KeyPoint>& keypoints, InputArray _mask )
{
Mat mask = _mask.getMat(), grayImage;
UMat ugrayImage;
_InputArray gray = _image;
@ -383,6 +381,17 @@ void FastFeatureDetector::detectImpl( InputArray _image, std::vector<KeyPoint>&
}
FAST( gray, keypoints, threshold, nonmaxSuppression, type );
KeyPointsFilter::runByPixelsMask( keypoints, mask );
}
int threshold;
bool nonmaxSuppression;
int type;
};
Ptr<FastFeatureDetector> FastFeatureDetector::create( int threshold, bool nonmaxSuppression, int type )
{
return makePtr<FastFeatureDetector_Impl>(threshold, nonmaxSuppression, type);
}
}

4
modules/features2d/src/features2d_init.cpp
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@ -42,6 +42,8 @@
#include "precomp.hpp"
#if 0
using namespace cv;
Ptr<Feature2D> Feature2D::create( const String& feature2DType )
@ -193,3 +195,5 @@ bool cv::initModule_features2d(void)
return all;
}
#endif

100
modules/features2d/src/kaze.cpp
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@ -52,17 +52,11 @@ http://www.robesafe.com/personal/pablo.alcantarilla/papers/Alcantarilla12eccv.pd
namespace cv
{
KAZE::KAZE()
: extended(false)
, upright(false)
, threshold(0.001f)
, octaves(4)
, sublevels(4)
, diffusivity(DIFF_PM_G2)
{
}
KAZE::KAZE(bool _extended, bool _upright, float _threshold, int _octaves,
class KAZE_Impl : public KAZE
{
public:
KAZE_Impl(bool _extended, bool _upright, float _threshold, int _octaves,
int _sublevels, int _diffusivity)
: extended(_extended)
, upright(_upright)
@ -71,40 +65,32 @@ namespace cv
, sublevels(_sublevels)
, diffusivity(_diffusivity)
{
}
KAZE::~KAZE()
{
}
virtual ~KAZE_Impl() {}
// returns the descriptor size in bytes
int KAZE::descriptorSize() const
int descriptorSize() const
{
return extended ? 128 : 64;
}
// returns the descriptor type
int KAZE::descriptorType() const
int descriptorType() const
{
return CV_32F;
}
// returns the default norm type
int KAZE::defaultNorm() const
int defaultNorm() const
{
return NORM_L2;
}
void KAZE::operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const
{
detectImpl(image, keypoints, mask);
}
void KAZE::operator()(InputArray image, InputArray mask,
void detectAndCompute(InputArray image, InputArray mask,
std::vector<KeyPoint>& keypoints,
OutputArray descriptors,
bool useProvidedKeypoints) const
bool useProvidedKeypoints)
{
cv::Mat img = image.getMat();
if (img.type() != CV_8UC1)
@ -113,8 +99,6 @@ namespace cv
Mat img1_32;
img.convertTo(img1_32, CV_32F, 1.0 / 255.0, 0);
cv::Mat& desc = descriptors.getMatRef();
KAZEOptions options;
options.img_width = img.cols;
options.img_height = img.rows;
@ -138,67 +122,23 @@ namespace cv
cv::KeyPointsFilter::runByPixelsMask(keypoints, mask.getMat());
}
if( descriptors.needed() )
{
Mat& desc = descriptors.getMatRef();
impl.Feature_Description(keypoints, desc);
CV_Assert((!desc.rows || desc.cols == descriptorSize()));
CV_Assert((!desc.rows || (desc.type() == descriptorType())));
}
void KAZE::detectImpl(InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask) const
{
Mat img = image.getMat();
if (img.type() != CV_8UC1)
cvtColor(image, img, COLOR_BGR2GRAY);
Mat img1_32;
img.convertTo(img1_32, CV_32F, 1.0 / 255.0, 0);
KAZEOptions options;
options.img_width = img.cols;
options.img_height = img.rows;
options.extended = extended;
options.upright = upright;
options.dthreshold = threshold;
options.omax = octaves;
options.nsublevels = sublevels;
options.diffusivity = diffusivity;
KAZEFeatures impl(options);
impl.Create_Nonlinear_Scale_Space(img1_32);
impl.Feature_Detection(keypoints);
if (!mask.empty())
{
cv::KeyPointsFilter::runByPixelsMask(keypoints, mask.getMat());
}
}
void KAZE::computeImpl(InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors) const
{
cv::Mat img = image.getMat();
if (img.type() != CV_8UC1)
cvtColor(image, img, COLOR_BGR2GRAY);
Mat img1_32;
img.convertTo(img1_32, CV_32F, 1.0 / 255.0, 0);
cv::Mat& desc = descriptors.getMatRef();
KAZEOptions options;
options.img_width = img.cols;
options.img_height = img.rows;
options.extended = extended;
options.upright = upright;
options.dthreshold = threshold;
options.omax = octaves;
options.nsublevels = sublevels;
options.diffusivity = diffusivity;
bool extended;
bool upright;
float threshold;
int octaves;
int sublevels;
int diffusivity;
};
KAZEFeatures impl(options);
impl.Create_Nonlinear_Scale_Space(img1_32);
impl.Feature_Description(keypoints, desc);
CV_Assert((!desc.rows || desc.cols == descriptorSize()));
CV_Assert((!desc.rows || (desc.type() == descriptorType())));
}
}

21
modules/features2d/src/kaze/AKAZEConfig.h
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@ -8,23 +8,8 @@
#ifndef __OPENCV_FEATURES_2D_AKAZE_CONFIG_H__
#define __OPENCV_FEATURES_2D_AKAZE_CONFIG_H__
/* ************************************************************************* */
// OpenCV
#include "../precomp.hpp"
#include <opencv2/features2d.hpp>
/* ************************************************************************* */
/// Lookup table for 2d gaussian (sigma = 2.5) where (0,0) is top left and (6,6) is bottom right
const float gauss25[7][7] = {
{ 0.02546481f, 0.02350698f, 0.01849125f, 0.01239505f, 0.00708017f, 0.00344629f, 0.00142946f },
{ 0.02350698f, 0.02169968f, 0.01706957f, 0.01144208f, 0.00653582f, 0.00318132f, 0.00131956f },
{ 0.01849125f, 0.01706957f, 0.01342740f, 0.00900066f, 0.00514126f, 0.00250252f, 0.00103800f },
{ 0.01239505f, 0.01144208f, 0.00900066f, 0.00603332f, 0.00344629f, 0.00167749f, 0.00069579f },
{ 0.00708017f, 0.00653582f, 0.00514126f, 0.00344629f, 0.00196855f, 0.00095820f, 0.00039744f },
{ 0.00344629f, 0.00318132f, 0.00250252f, 0.00167749f, 0.00095820f, 0.00046640f, 0.00019346f },
{ 0.00142946f, 0.00131956f, 0.00103800f, 0.00069579f, 0.00039744f, 0.00019346f, 0.00008024f }
};
namespace cv
{
/* ************************************************************************* */
/// AKAZE configuration options structure
struct AKAZEOptions {
@ -75,4 +60,6 @@ struct AKAZEOptions {
int kcontrast_nbins; ///< Number of bins for the contrast factor histogram
};
}
#endif

39
modules/features2d/src/kaze/AKAZEFeatures.cpp
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@ -6,6 +6,7 @@
* @author Pablo F. Alcantarilla, Jesus Nuevo
*/
#include "../precomp.hpp"
#include "AKAZEFeatures.h"
#include "fed.h"
#include "nldiffusion_functions.h"
@ -14,9 +15,9 @@
#include <iostream>
// Namespaces
namespace cv
{
using namespace std;
using namespace cv;
using namespace cv::details::kaze;
/* ************************************************************************* */
/**
@ -29,7 +30,7 @@ AKAZEFeatures::AKAZEFeatures(const AKAZEOptions& options) : options_(options) {
ncycles_ = 0;
reordering_ = true;
if (options_.descriptor_size > 0 && options_.descriptor >= cv::DESCRIPTOR_MLDB_UPRIGHT) {
if (options_.descriptor_size > 0 && options_.descriptor >= AKAZE::DESCRIPTOR_MLDB_UPRIGHT) {
generateDescriptorSubsample(descriptorSamples_, descriptorBits_, options_.descriptor_size,
options_.descriptor_pattern_size, options_.descriptor_channels);
}
@ -264,10 +265,10 @@ void AKAZEFeatures::Find_Scale_Space_Extrema(std::vector<cv::KeyPoint>& kpts)
vector<cv::KeyPoint> kpts_aux;
// Set maximum size
if (options_.descriptor == cv::DESCRIPTOR_MLDB_UPRIGHT || options_.descriptor == cv::DESCRIPTOR_MLDB) {
if (options_.descriptor == AKAZE::DESCRIPTOR_MLDB_UPRIGHT || options_.descriptor == AKAZE::DESCRIPTOR_MLDB) {
smax = 10.0f*sqrtf(2.0f);
}
else if (options_.descriptor == cv::DESCRIPTOR_KAZE_UPRIGHT || options_.descriptor == cv::DESCRIPTOR_KAZE) {
else if (options_.descriptor == AKAZE::DESCRIPTOR_KAZE_UPRIGHT || options_.descriptor == AKAZE::DESCRIPTOR_KAZE) {
smax = 12.0f*sqrtf(2.0f);
}
@ -712,7 +713,7 @@ void AKAZEFeatures::Compute_Descriptors(std::vector<cv::KeyPoint>& kpts, cv::Mat
}
// Allocate memory for the matrix with the descriptors
if (options_.descriptor < cv::DESCRIPTOR_MLDB_UPRIGHT) {
if (options_.descriptor < AKAZE::DESCRIPTOR_MLDB_UPRIGHT) {
desc = cv::Mat::zeros((int)kpts.size(), 64, CV_32FC1);
}
else {
@ -729,17 +730,17 @@ void AKAZEFeatures::Compute_Descriptors(std::vector<cv::KeyPoint>& kpts, cv::Mat
switch (options_.descriptor)
{
case cv::DESCRIPTOR_KAZE_UPRIGHT: // Upright descriptors, not invariant to rotation
case AKAZE::DESCRIPTOR_KAZE_UPRIGHT: // Upright descriptors, not invariant to rotation
{
cv::parallel_for_(cv::Range(0, (int)kpts.size()), MSURF_Upright_Descriptor_64_Invoker(kpts, desc, evolution_));
}
break;
case cv::DESCRIPTOR_KAZE:
case AKAZE::DESCRIPTOR_KAZE:
{
cv::parallel_for_(cv::Range(0, (int)kpts.size()), MSURF_Descriptor_64_Invoker(kpts, desc, evolution_));
}
break;
case cv::DESCRIPTOR_MLDB_UPRIGHT: // Upright descriptors, not invariant to rotation
case AKAZE::DESCRIPTOR_MLDB_UPRIGHT: // Upright descriptors, not invariant to rotation
{
if (options_.descriptor_size == 0)
cv::parallel_for_(cv::Range(0, (int)kpts.size()), Upright_MLDB_Full_Descriptor_Invoker(kpts, desc, evolution_, options_));
@ -747,7 +748,7 @@ void AKAZEFeatures::Compute_Descriptors(std::vector<cv::KeyPoint>& kpts, cv::Mat
cv::parallel_for_(cv::Range(0, (int)kpts.size()), Upright_MLDB_Descriptor_Subset_Invoker(kpts, desc, evolution_, options_, descriptorSamples_, descriptorBits_));
}
break;
case cv::DESCRIPTOR_MLDB:
case AKAZE::DESCRIPTOR_MLDB:
{
if (options_.descriptor_size == 0)
cv::parallel_for_(cv::Range(0, (int)kpts.size()), MLDB_Full_Descriptor_Invoker(kpts, desc, evolution_, options_));
@ -765,7 +766,20 @@ void AKAZEFeatures::Compute_Descriptors(std::vector<cv::KeyPoint>& kpts, cv::Mat
* @note The orientation is computed using a similar approach as described in the
* original SURF method. See Bay et al., Speeded Up Robust Features, ECCV 2006
*/
void AKAZEFeatures::Compute_Main_Orientation(cv::KeyPoint& kpt, const std::vector<TEvolution>& evolution_) {
void AKAZEFeatures::Compute_Main_Orientation(cv::KeyPoint& kpt, const std::vector<TEvolution>& evolution_)
{
/* ************************************************************************* */
/// Lookup table for 2d gaussian (sigma = 2.5) where (0,0) is top left and (6,6) is bottom right
static const float gauss25[7][7] =
{
{ 0.02546481f, 0.02350698f, 0.01849125f, 0.01239505f, 0.00708017f, 0.00344629f, 0.00142946f },
{ 0.02350698f, 0.02169968f, 0.01706957f, 0.01144208f, 0.00653582f, 0.00318132f, 0.00131956f },
{ 0.01849125f, 0.01706957f, 0.01342740f, 0.00900066f, 0.00514126f, 0.00250252f, 0.00103800f },
{ 0.01239505f, 0.01144208f, 0.00900066f, 0.00603332f, 0.00344629f, 0.00167749f, 0.00069579f },
{ 0.00708017f, 0.00653582f, 0.00514126f, 0.00344629f, 0.00196855f, 0.00095820f, 0.00039744f },
{ 0.00344629f, 0.00318132f, 0.00250252f, 0.00167749f, 0.00095820f, 0.00046640f, 0.00019346f },
{ 0.00142946f, 0.00131956f, 0.00103800f, 0.00069579f, 0.00039744f, 0.00019346f, 0.00008024f }
};
int ix = 0, iy = 0, idx = 0, s = 0, level = 0;
float xf = 0.0, yf = 0.0, gweight = 0.0, ratio = 0.0;
@ -1702,3 +1716,6 @@ void generateDescriptorSubsample(cv::Mat& sampleList, cv::Mat& comparisons, int
sampleList = samples.rowRange(0, count).clone();
comparisons = comps.rowRange(0, nbits).clone();
}
}
}

6
modules/features2d/src/kaze/KAZEConfig.h
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@ -12,12 +12,14 @@
#include "../precomp.hpp"
#include <opencv2/features2d.hpp>
namespace cv
{
//*************************************************************************************
struct KAZEOptions {
KAZEOptions()
: diffusivity(cv::DIFF_PM_G2)
: diffusivity(KAZE::DIFF_PM_G2)
, soffset(1.60f)
, omax(4)
@ -49,4 +51,6 @@ struct KAZEOptions {
bool extended;
};
}
#endif

5
modules/features2d/src/kaze/KAZEFeatures.h
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@ -17,6 +17,9 @@
#include "fed.h"
#include "TEvolution.h"
namespace cv
{
/* ************************************************************************* */
// KAZE Class Declaration
class KAZEFeatures {
@ -56,4 +59,6 @@ public:
void Do_Subpixel_Refinement(std::vector<cv::KeyPoint>& kpts);
};
}
#endif

68
modules/features2d/src/orb.cpp
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@ -645,38 +645,70 @@ static inline float getScale(int level, int firstLevel, double scaleFactor)
return (float)std::pow(scaleFactor, (double)(level - firstLevel));
}
/** Constructor
* @param detector_params parameters to use
*/
ORB::ORB(int _nfeatures, float _scaleFactor, int _nlevels, int _edgeThreshold,
class ORB_Impl : public ORB
{
public:
explicit ORB_Impl(int _nfeatures, float _scaleFactor, int _nlevels, int _edgeThreshold,
int _firstLevel, int _WTA_K, int _scoreType, int _patchSize, int _fastThreshold) :
nfeatures(_nfeatures), scaleFactor(_scaleFactor), nlevels(_nlevels),
edgeThreshold(_edgeThreshold), firstLevel(_firstLevel), WTA_K(_WTA_K),
scoreType(_scoreType), patchSize(_patchSize), fastThreshold(_fastThreshold)
{}
{}
// returns the descriptor size in bytes
int descriptorSize() const;
// returns the descriptor type
int descriptorType() const;
// returns the default norm type
int defaultNorm() const;
// Compute the ORB_Impl features and descriptors on an image
void operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const;
// Compute the ORB_Impl features and descriptors on an image
void operator()( InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints,
OutputArray descriptors, bool useProvidedKeypoints=false ) const;
AlgorithmInfo* info() const;
protected:
void computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors ) const;
void detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask=noArray() ) const;
int nfeatures;
double scaleFactor;
int nlevels;
int edgeThreshold;
int firstLevel;
int WTA_K;
int scoreType;
int patchSize;
int fastThreshold;
};
int ORB::descriptorSize() const
int ORB_Impl::descriptorSize() const
{
return kBytes;
}
int ORB::descriptorType() const
int ORB_Impl::descriptorType() const
{
return CV_8U;
}
int ORB::defaultNorm() const
int ORB_Impl::defaultNorm() const
{
return NORM_HAMMING;
}
/** Compute the ORB features and descriptors on an image
/** Compute the ORB_Impl features and descriptors on an image
* @param img the image to compute the features and descriptors on
* @param mask the mask to apply
* @param keypoints the resulting keypoints
*/
void ORB::operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const
void ORB_Impl::operator()(InputArray image, InputArray mask, std::vector<KeyPoint>& keypoints) const
{
(*this)(image, mask, keypoints, noArray(), false);
}
@ -716,7 +748,7 @@ static void uploadORBKeypoints(const std::vector<KeyPoint>& src,
}
/** Compute the ORB keypoints on an image
/** Compute the ORB_Impl keypoints on an image
* @param image_pyramid the image pyramid to compute the features and descriptors on
* @param mask_pyramid the masks to apply at every level
* @param keypoints the resulting keypoints, clustered per level
@ -788,7 +820,7 @@ static void computeKeyPoints(const Mat& imagePyramid,
KeyPointsFilter::runByImageBorder(keypoints, img.size(), edgeThreshold);
// Keep more points than necessary as FAST does not give amazing corners
KeyPointsFilter::retainBest(keypoints, scoreType == ORB::HARRIS_SCORE ? 2 * featuresNum : featuresNum);
KeyPointsFilter::retainBest(keypoints, scoreType == ORB_Impl::HARRIS_SCORE ? 2 * featuresNum : featuresNum);
nkeypoints = (int)keypoints.size();
counters[level] = nkeypoints;
@ -814,7 +846,7 @@ static void computeKeyPoints(const Mat& imagePyramid,
UMat ukeypoints, uresponses(1, nkeypoints, CV_32F);
// Select best features using the Harris cornerness (better scoring than FAST)
if( scoreType == ORB::HARRIS_SCORE )
if( scoreType == ORB_Impl::HARRIS_SCORE )
{
if( useOCL )
{
@ -888,7 +920,7 @@ static void computeKeyPoints(const Mat& imagePyramid,
}
/** Compute the ORB features and descriptors on an image
/** Compute the ORB_Impl features and descriptors on an image
* @param img the image to compute the features and descriptors on
* @param mask the mask to apply
* @param keypoints the resulting keypoints
@ -896,7 +928,7 @@ static void computeKeyPoints(const Mat& imagePyramid,
* @param do_keypoints if true, the keypoints are computed, otherwise used as an input
* @param do_descriptors if true, also computes the descriptors
*/
void ORB::operator()( InputArray _image, InputArray _mask, std::vector<KeyPoint>& keypoints,
void ORB_Impl::operator()( InputArray _image, InputArray _mask, std::vector<KeyPoint>& keypoints,
OutputArray _descriptors, bool useProvidedKeypoints ) const
{
CV_Assert(patchSize >= 2);
@ -1127,12 +1159,12 @@ void ORB::operator()( InputArray _image, InputArray _mask, std::vector<KeyPoint>
}
}
void ORB::detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask) const
void ORB_Impl::detectImpl( InputArray image, std::vector<KeyPoint>& keypoints, InputArray mask) const
{
(*this)(image.getMat(), mask.getMat(), keypoints, noArray(), false);
}
void ORB::computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors) const
void ORB_Impl::computeImpl( InputArray image, std::vector<KeyPoint>& keypoints, OutputArray descriptors) const
{
(*this)(image, Mat(), keypoints, descriptors, true);
}

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