Refactored GPU/Keypoint detector/Descriptor extractor

git-svn-id: http://find-object.googlecode.com/svn/trunk/find_object@342 620bd6b2-0a58-f614-fd9a-1bd335dccda9

imagesTcpServer/ImagesTcpServer.cpp

@@ -66,7 +66,7 @@ void ImagesTcpServer::publishImage(const cv::Mat & image)
 			QDataStream out(&block, QIODevice::WriteOnly);
 			out.setVersion(QDataStream::Qt_4_0);
 			out << (quint64)0;
-			out.writeRawData((char*)buf.data(), buf.size());
+			out.writeRawData((char*)buf.data(), (int)buf.size());
 			out.device()->seek(0);
 			out << (quint64)(block.size() - sizeof(quint64));
 			(*iter)->write(block);

imagesTcpServer/ImagesTcpServer.h

@@ -27,7 +27,6 @@ private slots:
 	void publishImage(const cv::Mat & image);
 
 private:
-	float hz_;
 	Camera camera_;
 };
 

src/AddObjectDialog.cpp

@@ -27,8 +27,8 @@ AddObjectDialog::AddObjectDialog(Camera * camera, const cv::Mat & image, bool mi
 	ui_ = new Ui_addObjectDialog();
 	ui_->setupUi(this);
 
-	detector_ = Settings::createFeaturesDetector();
+	detector_ = Settings::createKeypointDetector();
-	extractor_ = Settings::createDescriptorsExtractor();
+	extractor_ = Settings::createDescriptorExtractor();
 	Q_ASSERT(detector_ != 0 && extractor_ != 0);
 
 	connect(ui_->pushButton_cancel, SIGNAL(clicked()), this, SLOT(cancel()));

src/AddObjectDialog.h

@@ -14,6 +14,8 @@ class Ui_addObjectDialog;
 class ObjWidget;
 class Camera;
 class KeypointItem;
+class KeypointDetector;
+class DescriptorExtractor;
 
 class AddObjectDialog : public QDialog {
 
@@ -47,8 +49,8 @@ private:
 	Camera * camera_;
 	ObjWidget * object_;
 	cv::Mat cvImage_;
-	cv::FeatureDetector * detector_;
+	KeypointDetector * detector_;
-	cv::DescriptorExtractor * extractor_;
+	DescriptorExtractor * extractor_;
 
 	enum State{kTakePicture, kSelectFeatures, kVerifySelection, kClosing};
 	int state_;

src/MainWindow.cpp

@@ -15,6 +15,7 @@
 #include "AboutDialog.h"
 #include "TcpServer.h"
 #include "rtabmap/PdfPlot.h"
+#include "Vocabulary.h"
 
 #include <iostream>
 #include <stdio.h>
@@ -49,6 +50,7 @@ MainWindow::MainWindow(Camera * camera, const QString & settings, QWidget * pare
 	settings_(settings),
 	likelihoodCurve_(0),
 	inliersCurve_(0),
+	vocabulary_(new Vocabulary()),
 	lowestRefreshRate_(99),
 	objectsModified_(false),
 	tcpServer_(0),
@@ -117,13 +119,14 @@ MainWindow::MainWindow(Camera * camera, const QString & settings, QWidget * pare
 		ui_->toolBox->updateParameter(Settings::kFeature2D_Fast_gpu());
 		ui_->toolBox->updateParameter(Settings::kFeature2D_ORB_gpu());
 		ui_->toolBox->getParameterWidget(Settings::kFeature2D_SURF_gpu())->setEnabled(false);
+		ui_->toolBox->getParameterWidget(Settings::kFeature2D_SURF_keypointsRatio())->setEnabled(false);
 		ui_->toolBox->getParameterWidget(Settings::kFeature2D_Fast_gpu())->setEnabled(false);
 		ui_->toolBox->getParameterWidget(Settings::kFeature2D_Fast_keypointsRatio())->setEnabled(false);
 		ui_->toolBox->getParameterWidget(Settings::kFeature2D_ORB_gpu())->setEnabled(false);
 	}
 
-	detector_ = Settings::createFeaturesDetector();
+	detector_ = Settings::createKeypointDetector();
-	extractor_ = Settings::createDescriptorsExtractor();
+	extractor_ = Settings::createDescriptorExtractor();
 	Q_ASSERT(detector_ != 0 && extractor_ != 0);
 
 	connect((QDoubleSpinBox*)ui_->toolBox->getParameterWidget(Settings::kCamera_4imageRate()),
@@ -217,6 +220,7 @@ MainWindow::~MainWindow()
 	camera_->stop();
 	delete detector_;
 	delete extractor_;
+	delete vocabulary_;
 	objectsDescriptors_.clear();
 	qDeleteAll(objects_.begin(), objects_.end());
 	objects_.clear();
@@ -349,7 +353,7 @@ int MainWindow::loadObjects(const QString & dirPath)
 		{
 			this->updateObjects();
 		}
-		loadedObjects = names.size();
+		loadedObjects = (int)names.size();
 	}
 	return loadedObjects;
 }
@@ -756,7 +760,7 @@ protected:
 		QTime time;
 		time.start();
 		printf("Extracting descriptors from object %d...\n", objectId_);
-		cv::FeatureDetector * detector = Settings::createFeaturesDetector();
+		KeypointDetector * detector = Settings::createKeypointDetector();
 		keypoints_.clear();
 		descriptors_ = cv::Mat();
 		detector->detect(image_, keypoints_);
@@ -767,12 +771,12 @@ protected:
 			int maxFeatures = Settings::getFeature2D_3MaxFeatures();
 			if(maxFeatures > 0 && (int)keypoints_.size() > maxFeatures)
 			{
-				int previousCount = keypoints_.size();
+				int previousCount = (int)keypoints_.size();
 				keypoints_ = limitKeypoints(keypoints_, maxFeatures);
 				printf("obj=%d, %d keypoints removed, (kept %d), min/max response=%f/%f\n", objectId_, previousCount-(int)keypoints_.size(), (int)keypoints_.size(), keypoints_.size()?keypoints_.back().response:0.0f, keypoints_.size()?keypoints_.front().response:0.0f);
 			}
 
-			cv::DescriptorExtractor * extractor = Settings::createDescriptorsExtractor();
+			DescriptorExtractor * extractor = Settings::createDescriptorExtractor();
 			extractor->compute(image_, keypoints_, descriptors_);
 			delete extractor;
 			if((int)keypoints_.size() != descriptors_.rows)
@@ -858,7 +862,7 @@ void MainWindow::updateData()
 
 	objectsDescriptors_.clear();
 	dataRange_.clear();
-	vocabulary_.clear();
+	vocabulary_->clear();
 	int count = 0;
 	int dim = -1;
 	int type = -1;
@@ -944,13 +948,13 @@ void MainWindow::updateData()
 				int addedWords = 0;
 				for(int i=0; i<objects_.size(); ++i)
 				{
-					QMultiMap<int, int> words = vocabulary_.addWords(objects_[i]->descriptors(), i, incremental);
+					QMultiMap<int, int> words = vocabulary_->addWords(objects_[i]->descriptors(), i, incremental);
 					objects_[i]->setWords(words);
 					addedWords += words.uniqueKeys().size();
 					bool updated = false;
 					if(incremental && addedWords && addedWords >= updateVocabularyMinWords)
 					{
-						vocabulary_.update();
+						vocabulary_->update();
 						addedWords = 0;
 						updated = true;
 					}
@@ -958,23 +962,23 @@ void MainWindow::updateData()
 							objects_[i]->id(),
 							words.uniqueKeys().size(),
 							objects_[i]->descriptors().rows,
-							vocabulary_.size(),
+							vocabulary_->size(),
 							localTime.restart(),
 							updated?"updated":"");
 				}
 				if(addedWords)
 				{
-					vocabulary_.update();
+					vocabulary_->update();
 				}
 				ui_->label_timeIndexing->setNum(time.elapsed());
-				ui_->label_vocabularySize->setNum(vocabulary_.size());
+				ui_->label_vocabularySize->setNum(vocabulary_->size());
 				if(incremental)
 				{
-					printf("Creating incremental vocabulary... done! size=%d (%d ms)\n", vocabulary_.size(), time.elapsed());
+					printf("Creating incremental vocabulary... done! size=%d (%d ms)\n", vocabulary_->size(), time.elapsed());
 				}
 				else
 				{
-					printf("Creating vocabulary... done! size=%d (%d ms)\n", vocabulary_.size(), time.elapsed());
+					printf("Creating vocabulary... done! size=%d (%d ms)\n", vocabulary_->size(), time.elapsed());
 				}
 			}
 		}
@@ -1366,8 +1370,8 @@ void MainWindow::update(const cv::Mat & image)
 			ui_->imageView_source->setData(keypoints, cv::Mat(), image, Settings::currentDetectorType(), Settings::currentDescriptorType());
 		}
 
-		bool consistentNNData = (vocabulary_.size()!=0 && vocabulary_.wordToObjects().begin().value()!=-1 && Settings::getGeneral_invertedSearch()) ||
+		bool consistentNNData = (vocabulary_->size()!=0 && vocabulary_->wordToObjects().begin().value()!=-1 && Settings::getGeneral_invertedSearch()) ||
-								((vocabulary_.size()==0 || vocabulary_.wordToObjects().begin().value()==-1) && !Settings::getGeneral_invertedSearch());
+								((vocabulary_->size()==0 || vocabulary_->wordToObjects().begin().value()==-1) && !Settings::getGeneral_invertedSearch());
 
 		// COMPARE
 		if(!objectsDescriptors_.empty() &&
@@ -1385,15 +1389,15 @@ void MainWindow::update(const cv::Mat & image)
 			{
 				// CREATE INDEX for the scene
 				//printf("Creating FLANN index (%s)\n", Settings::currentNearestNeighborType().toStdString().c_str());
-				vocabulary_.clear();
+				vocabulary_->clear();
-				QMultiMap<int, int> words = vocabulary_.addWords(descriptors, -1, Settings::getGeneral_vocabularyIncremental());
+				QMultiMap<int, int> words = vocabulary_->addWords(descriptors, -1, Settings::getGeneral_vocabularyIncremental());
 				if(!Settings::getGeneral_vocabularyIncremental())
 				{
-					vocabulary_.update();
+					vocabulary_->update();
 				}
 				ui_->imageView_source->setWords(words);
 				ui_->label_timeIndexing->setNum(time.restart());
-				ui_->label_vocabularySize->setNum(vocabulary_.size());
+				ui_->label_vocabularySize->setNum(vocabulary_->size());
 			}
 
 			if(Settings::getGeneral_invertedSearch() || Settings::getGeneral_threads() == 1)
@@ -1407,14 +1411,14 @@ void MainWindow::update(const cv::Mat & image)
 					//match objects to scene
 					results = cv::Mat(objectsDescriptors_[0].rows, k, CV_32SC1); // results index
 					dists = cv::Mat(objectsDescriptors_[0].rows, k, CV_32FC1); // Distance results are CV_32FC1
-					vocabulary_.search(objectsDescriptors_[0], results, dists, k);
+					vocabulary_->search(objectsDescriptors_[0], results, dists, k);
 				}
 				else
 				{
 					//match scene to objects
 					results = cv::Mat(descriptors.rows, k, CV_32SC1); // results index
 					dists = cv::Mat(descriptors.rows, k, CV_32FC1); // Distance results are CV_32FC1
-					vocabulary_.search(descriptors, results, dists, k);
+					vocabulary_->search(descriptors, results, dists, k);
 				}
 
 				// PROCESS RESULTS
@@ -1459,11 +1463,11 @@ void MainWindow::update(const cv::Mat & image)
 						if(Settings::getGeneral_invertedSearch())
 						{
 							int wordId = results.at<int>(i,0);
-							QList<int> objIndexes = vocabulary_.wordToObjects().values(wordId);
+							QList<int> objIndexes = vocabulary_->wordToObjects().values(wordId);
 							for(int j=0; j<objIndexes.size(); ++j)
 							{
 								// just add unique matches
-								if(vocabulary_.wordToObjects().count(wordId, objIndexes[j]) == 1)
+								if(vocabulary_->wordToObjects().count(wordId, objIndexes[j]) == 1)
 								{
 									matches[objIndexes[j]].insert(objects_.at(objIndexes[j])->words().value(wordId), i);
 								}
@@ -1491,7 +1495,7 @@ void MainWindow::update(const cv::Mat & image)
 				unsigned int threadCounts = Settings::getGeneral_threads();
 				if(threadCounts == 0)
 				{
-					threadCounts = objectsDescriptors_.size();
+					threadCounts = (int)objectsDescriptors_.size();
 				}
 				for(unsigned int j=0; j<objectsDescriptors_.size(); j+=threadCounts)
 				{
@@ -1499,7 +1503,7 @@ void MainWindow::update(const cv::Mat & image)
 
 					for(unsigned int k=j; k<j+threadCounts && k<objectsDescriptors_.size(); ++k)
 					{
-						threads.push_back(new SearchThread(&vocabulary_, k, &objectsDescriptors_[k], ui_->imageView_source));
+						threads.push_back(new SearchThread(vocabulary_, k, &objectsDescriptors_[k], ui_->imageView_source));
 						threads.back()->start();
 					}
 
@@ -1823,6 +1827,9 @@ void MainWindow::notifyParametersChanged(const QStringList & paramChanged)
 	for(QStringList::const_iterator iter = paramChanged.begin(); iter!=paramChanged.end(); ++iter)
 	{
 		printf("Parameter changed: %s -> \"%s\"\n", iter->toStdString().c_str(), Settings::getParameter(*iter).toString().toStdString().c_str());
+		printf("lastObjectsUpdateParameters_.value(*iter)=%s, Settings::getParameter(*iter)=%s",
+				lastObjectsUpdateParameters_.value(*iter).toString().toStdString().c_str(),
+				Settings::getParameter(*iter).toString().toStdString().c_str());
 		if(lastObjectsUpdateParameters_.value(*iter) != Settings::getParameter(*iter))
 		{
 			if(!detectorDescriptorParamsChanged && iter->contains("Feature2D"))
@@ -1837,6 +1844,7 @@ void MainWindow::notifyParametersChanged(const QStringList & paramChanged)
 			{
 				nearestNeighborParamsChanged = true;
 			}
+			lastObjectsUpdateParameters_[*iter] = Settings::getParameter(*iter);
 		}
 
 		if(iter->compare(Settings::kGeneral_port()) == 0 &&
@@ -1852,8 +1860,8 @@ void MainWindow::notifyParametersChanged(const QStringList & paramChanged)
 		//Re-init detector and extractor
 		delete detector_;
 		delete extractor_;
-		detector_ = Settings::createFeaturesDetector();
+		detector_ = Settings::createKeypointDetector();
-		extractor_ = Settings::createDescriptorsExtractor();
+		extractor_ = Settings::createDescriptorExtractor();
 		Q_ASSERT(detector_ != 0 && extractor_ != 0);
 	}
 

src/MainWindow.h

@@ -12,11 +12,7 @@
 #include <QtCore/QMap>
 #include <QtCore/QByteArray>
 
-#include <opencv2/core/core.hpp>
+#include <opencv2/opencv.hpp>
-#include <opencv2/features2d/features2d.hpp>
-#include <opencv2/imgproc/imgproc_c.h>
-
-#include "Vocabulary.h"
 
 class Ui_mainWindow;
 class ObjWidget;
@@ -25,6 +21,9 @@ class ParametersToolBox;
 class QLabel;
 class AboutDialog;
 class TcpServer;
+class KeypointDetector;
+class DescriptorExtractor;
+class Vocabulary;
 
 namespace rtabmap
 {
@@ -96,7 +95,7 @@ private:
 	AboutDialog * aboutDialog_;
 	QList<ObjWidget*> objects_;
 	std::vector<cv::Mat> objectsDescriptors_;
-	Vocabulary vocabulary_;
+	Vocabulary * vocabulary_;
 	QMap<int, int> dataRange_; // <last id of object's descriptor, id>
 	QTime updateRate_;
 	QTime refreshStartTime_;
@@ -105,8 +104,8 @@ private:
 	QMap<int, QByteArray> imagesMap_;
 	TcpServer * tcpServer_;
 	QMap<QString, QVariant> lastObjectsUpdateParameters_; // ParametersMap
-	cv::FeatureDetector * detector_;
+	KeypointDetector * detector_;
-	cv::DescriptorExtractor * extractor_;
+	DescriptorExtractor * extractor_;
 };
 
 #endif /* MainWindow_H_ */

src/ObjWidget.cpp

@@ -247,7 +247,7 @@ void ObjWidget::setData(const std::vector<cv::KeyPoint> & keypoints,
 {
 	keypoints_ = keypoints;
 	descriptors_ = descriptors;
-	kptColors_ = QVector<QColor>(keypoints.size(), defaultColor());
+	kptColors_ = QVector<QColor>((int)keypoints.size(), defaultColor());
 	keypointItems_.clear();
 	rectItems_.clear();
 	graphicsView_->scene()->clear();

src/Settings.cpp

@@ -11,6 +11,7 @@
 #include <opencv2/nonfree/features2d.hpp>
 #include <opencv2/calib3d/calib3d.hpp>
 #include <opencv2/nonfree/gpu.hpp>
+#include <opencv2/gpu/gpu.hpp>
 
 #define VERBOSE 0
 
@@ -118,56 +119,77 @@ void Settings::saveSettings(const QString & fileName, const QByteArray & windowG
 	printf("Settings saved to %s\n", path.toStdString().c_str());
 }
 
-class GPUSURF : public cv::Feature2D
+class GPUFeature2D
+{
+public:
+	GPUFeature2D() {}
+	virtual ~GPUFeature2D() {}
+
+	virtual void detectKeypoints(const cv::Mat & image,
+			std::vector<cv::KeyPoint> & keypoints) = 0;
+
+	virtual void computeDescriptors(const cv::Mat & image,
+			std::vector<cv::KeyPoint> & keypoints,
+			cv::Mat & descriptors) = 0;
+};
+
+class GPUSURF : public GPUFeature2D
 {
 public:
 	GPUSURF(double hessianThreshold,
-            int nOctaves = Settings::defaultFeature2D_SURF_nOctaves(),
+            int nOctaves,
-            int nOctaveLayers = Settings::defaultFeature2D_SURF_nOctaveLayers(),
+            int nOctaveLayers,
-            bool extended = Settings::defaultFeature2D_SURF_extended(),
+            bool extended,
-            bool upright = Settings::defaultFeature2D_SURF_upright()) :
+            float keypointsRatio,
-		hessianThreshold_(hessianThreshold),
+            bool upright) :
-		nOctaves_(nOctaves),
+	surf_(hessianThreshold,
-		nOctaveLayers_(nOctaveLayers),
+		  nOctaves,
-		extended_(extended),
+		  nOctaveLayers,
-		upright_(upright)
+		  extended,
+		  keypointsRatio,
+		  upright)
 	{
 	}
 	virtual ~GPUSURF() {}
 
-	void operator()(cv::InputArray img, cv::InputArray mask,
+    void detectKeypoints(const cv::Mat & image, std::vector<cv::KeyPoint> & keypoints)
-	                    std::vector<cv::KeyPoint>& keypoints,
-	                    cv::OutputArray descriptors,
-	                    bool useProvidedKeypoints=false) const
-	{
-		printf("GPUSURF:operator() Don't call this directly!\n");
-		exit(-1);
-	}
-	int descriptorSize() const
-	{
-		return extended_ ? 128 : 64;
-	}
-	int descriptorType() const
-	{
-		return CV_32F;
-	}
-
-protected:
-    void detectImpl( const cv::Mat& image, std::vector<cv::KeyPoint>& keypoints, const cv::Mat& mask=cv::Mat() ) const
     {
     	cv::gpu::GpuMat imgGpu(image);
-    	cv::gpu::GpuMat maskGpu(mask);
+		try
-		cv::gpu::SURF_GPU surfGpu(hessianThreshold_, nOctaves_, nOctaveLayers_, extended_, 0.01f, upright_);
+		{
-		surfGpu(imgGpu, maskGpu, keypoints);
+			surf_(imgGpu, cv::gpu::GpuMat(), keypoints);
+		}
+		catch(cv::Exception &e)
+		{
+			printf("GPUSURF error: %s \n(If something about layer_rows, parameter nOctaves=%d of SURF is too high for the size of the image (%d,%d).)\n",
+					e.msg.c_str(),
+					surf_.nOctaves,
+					image.cols,
+					image.rows);
+			printf("img.size().area()=%d surf.keypointsRatio=%d\n", imgGpu.size().area(), surf_.keypointsRatio);
+		}
     }
 
-    void computeImpl( const cv::Mat& image, std::vector<cv::KeyPoint>& keypoints, cv::Mat& descriptors ) const
+    void computeDescriptors( const cv::Mat& image,
+    		std::vector<cv::KeyPoint>& keypoints,
+    		cv::Mat& descriptors)
     {
     	std::vector<float> d;
 		cv::gpu::GpuMat imgGpu(image);
-		cv::gpu::SURF_GPU surfGpu(hessianThreshold_, nOctaves_, nOctaveLayers_, extended_, 0.01f, upright_);
 		cv::gpu::GpuMat descriptorsGPU;
-		surfGpu(imgGpu, cv::gpu::GpuMat(), keypoints, descriptorsGPU, true);
+		try
+		{
+			surf_(imgGpu, cv::gpu::GpuMat(), keypoints, descriptorsGPU, true);
+    	}
+		catch(cv::Exception &e)
+		{
+			printf("GPUSURF error: %s \n(If something about layer_rows, parameter nOctaves=%d of SURF is too high for the size of the image (%d,%d).)\n",
+					e.msg.c_str(),
+					surf_.nOctaves,
+					image.cols,
+					image.rows);
+			printf("img.size().area()=%d surf.keypointsRatio=%d\n", imgGpu.size().area(), surf_.keypointsRatio);
+		}
 
 		// Download descriptors
 		if (descriptorsGPU.empty())
@@ -179,44 +201,41 @@ protected:
 			descriptorsGPU.download(descriptors);
 		}
     }
-
 private:
-    double hessianThreshold_;
+    cv::gpu::SURF_GPU surf_; // HACK: static because detectImpl() is const!
-    int nOctaves_;
-    int nOctaveLayers_;
-    bool extended_;
-    bool upright_;
 };
 
-class GPUFAST : public cv::FeatureDetector
+class GPUFAST : public GPUFeature2D
 {
 public:
 	GPUFAST(int threshold=Settings::defaultFeature2D_Fast_threshold(),
 			bool nonmaxSuppression=Settings::defaultFeature2D_Fast_nonmaxSuppression(),
 			double keypointsRatio=Settings::defaultFeature2D_Fast_keypointsRatio()) :
-		threshold_(threshold),
+		fast_(threshold,
-		nonmaxSuppression_(nonmaxSuppression),
+			  nonmaxSuppression,
-		keypointsRatio_(keypointsRatio)
+			  keypointsRatio)
 	{
 	}
 	virtual ~GPUFAST() {}
 
 protected:
-    void detectImpl( const cv::Mat& image, std::vector<cv::KeyPoint>& keypoints, const cv::Mat& mask=cv::Mat() ) const
+	void detectKeypoints(const cv::Mat & image, std::vector<cv::KeyPoint> & keypoints)
     {
     	cv::gpu::GpuMat imgGpu(image);
-    	cv::gpu::GpuMat maskGpu(mask);
+    	fast_(imgGpu, cv::gpu::GpuMat(), keypoints);
-		cv::gpu::FAST_GPU fastGpu(threshold_, nonmaxSuppression_, keypointsRatio_);
-		fastGpu(imgGpu, maskGpu, keypoints);
     }
+	void computeDescriptors( const cv::Mat& image,
+		std::vector<cv::KeyPoint>& keypoints,
+		cv::Mat& descriptors)
+	{
+		printf("GPUFAST:computeDescriptors() Should not be used!\n");
+	}
 
 private:
-    int threshold_;
+    cv::gpu::FAST_GPU fast_;
-    bool nonmaxSuppression_;
-    double keypointsRatio_;
 };
 
-class GPUORB : public cv::Feature2D
+class GPUORB : public GPUFeature2D
 {
 public:
 	GPUORB(int nFeatures = Settings::defaultFeature2D_ORB_nFeatures(),
@@ -229,56 +248,54 @@ public:
             int patchSize = Settings::defaultFeature2D_ORB_patchSize(),
             int fastThreshold = Settings::defaultFeature2D_Fast_threshold(),
             bool fastNonmaxSupression = Settings::defaultFeature2D_Fast_nonmaxSuppression()) :
-		nFeatures_(nFeatures),
+		orb_(nFeatures,
-		scaleFactor_(scaleFactor),
+			 scaleFactor,
-		nLevels_(nLevels),
+			 nLevels,
-		edgeThreshold_(edgeThreshold),
+			 edgeThreshold ,
-		firstLevel_(firstLevel),
+			 firstLevel,
-		WTA_K_(WTA_K),
+			 WTA_K,
-		scoreType_(scoreType),
+			 scoreType,
-		patchSize_(patchSize),
+			 patchSize)
-		fastThreshold_(fastThreshold),
-		fastNonmaxSupression_(fastNonmaxSupression)
 	{
+		orb_.setFastParams(fastThreshold, fastNonmaxSupression);
 	}
 	virtual ~GPUORB() {}
 
-	void operator()(cv::InputArray img, cv::InputArray mask,
-						std::vector<cv::KeyPoint>& keypoints,
-						cv::OutputArray descriptors,
-						bool useProvidedKeypoints=false) const
-	{
-		printf("GPUSURF:operator() Don't call this directly!\n");
-		exit(-1);
-	}
-	int descriptorSize() const
-	{
-		return cv::ORB::kBytes;
-	}
-	int descriptorType() const
-	{
-		return CV_8U;
-	}
-
 protected:
-    void detectImpl( const cv::Mat& image, std::vector<cv::KeyPoint>& keypoints, const cv::Mat& mask=cv::Mat() ) const
+	void detectKeypoints(const cv::Mat & image, std::vector<cv::KeyPoint> & keypoints)
     {
     	cv::gpu::GpuMat imgGpu(image);
-    	cv::gpu::GpuMat maskGpu(mask);
+    	try
-		cv::gpu::ORB_GPU orbGPU(nFeatures_, scaleFactor_, nLevels_, edgeThreshold_ ,firstLevel_, WTA_K_, scoreType_, patchSize_);
+    	{
-		orbGPU.setFastParams(fastThreshold_, fastNonmaxSupression_);
+    		orb_(imgGpu, cv::gpu::GpuMat(), keypoints);
-		orbGPU(imgGpu, maskGpu, keypoints);
+    	}
+    	catch(cv::Exception &e)
+		{
+			printf("GPUORB error: %s \n(If something about matrix size, the image/object may be too small (%d,%d).)\n",
+					e.msg.c_str(),
+					image.cols,
+					image.rows);
+		}
     }
 
-    void computeImpl( const cv::Mat& image, std::vector<cv::KeyPoint>& keypoints, cv::Mat& descriptors ) const
+    void computeDescriptors( const cv::Mat& image,
+        		std::vector<cv::KeyPoint>& keypoints,
+        		cv::Mat& descriptors)
 	{
 		std::vector<float> d;
 		cv::gpu::GpuMat imgGpu(image);
-		cv::gpu::ORB_GPU orbGPU(nFeatures_, scaleFactor_, nLevels_, edgeThreshold_ ,firstLevel_, WTA_K_, scoreType_, patchSize_);
-		orbGPU.setFastParams(fastThreshold_, fastNonmaxSupression_);
 		cv::gpu::GpuMat descriptorsGPU;
-		orbGPU(imgGpu, cv::gpu::GpuMat(), keypoints, descriptorsGPU); // No option to use provided keypoints!?
+		try
-
+		{
+			orb_(imgGpu, cv::gpu::GpuMat(), keypoints, descriptorsGPU); // No option to use provided keypoints!?
+		}
+		catch(cv::Exception &e)
+		{
+			printf("GPUORB error: %s \n(If something about matrix size, the image/object may be too small (%d,%d).)\n",
+					e.msg.c_str(),
+					image.cols,
+					image.rows);
+		}
 		// Download descriptors
 		if (descriptorsGPU.empty())
 			descriptors = cv::Mat();
@@ -289,24 +306,14 @@ protected:
 			descriptorsGPU.download(descriptors);
 		}
 	}
-
 private:
-    int nFeatures_;
+    cv::gpu::ORB_GPU orb_;
-	float scaleFactor_;
-	int nLevels_;
-	int edgeThreshold_;
-	int firstLevel_;
-	int WTA_K_;
-	int scoreType_;
-	int patchSize_;
-	int fastThreshold_;
-	bool fastNonmaxSupression_;
 };
 
-
+KeypointDetector * Settings::createKeypointDetector()
-cv::FeatureDetector * Settings::createFeaturesDetector()
 {
 	cv::FeatureDetector * detector = 0;
+	GPUFeature2D * detectorGPU = 0;
 	QString str = getFeature2D_1Detector();
 	QStringList split = str.split(':');
 	if(split.size()==2)
@@ -339,7 +346,7 @@ cv::FeatureDetector * Settings::createFeaturesDetector()
 					{
 						if(getFeature2D_Fast_gpu() && cv::gpu::getCudaEnabledDeviceCount())
 						{
-							detector = new GPUFAST(
+							detectorGPU = new GPUFAST(
 									getFeature2D_Fast_threshold(),
 									getFeature2D_Fast_nonmaxSuppression());
 							if(VERBOSE)printf("Settings::createFeaturesDetector() type=%s GPU\n", strategies.at(index).toStdString().c_str());
@@ -387,7 +394,7 @@ cv::FeatureDetector * Settings::createFeaturesDetector()
 					{
 						if(getFeature2D_ORB_gpu() && cv::gpu::getCudaEnabledDeviceCount())
 						{
-							detector = new GPUORB(
+							detectorGPU = new GPUORB(
 									getFeature2D_ORB_nFeatures(),
 									getFeature2D_ORB_scaleFactor(),
 									getFeature2D_ORB_nLevels(),
@@ -444,11 +451,12 @@ cv::FeatureDetector * Settings::createFeaturesDetector()
 					{
 						if(getFeature2D_SURF_gpu() && cv::gpu::getCudaEnabledDeviceCount())
 						{
-							detector = new GPUSURF(
+							detectorGPU = new GPUSURF(
 									getFeature2D_SURF_hessianThreshold(),
 									getFeature2D_SURF_nOctaves(),
 									getFeature2D_SURF_nOctaveLayers(),
 									getFeature2D_SURF_extended(),
+									getFeature2D_SURF_keypointsRatio(),
 									getFeature2D_SURF_upright());
 							if(VERBOSE)printf("Settings::createFeaturesDetector() type=%s (GPU)\n", strategies.at(index).toStdString().c_str());
 						}
@@ -480,17 +488,22 @@ cv::FeatureDetector * Settings::createFeaturesDetector()
 			}
 		}
 	}
-	if(!detector)
+
+	Q_ASSERT(detectorGPU!=0 || detector!=0);
+	if(detectorGPU)
 	{
-		printf("ERROR: detector strategy not found !? Using default SURF...\n");
+		return new KeypointDetector(detectorGPU);
-		detector = new cv::SURF();
+	}
+	else
+	{
+		return new KeypointDetector(detector);
 	}
-	return detector;
 }
 
-cv::DescriptorExtractor * Settings::createDescriptorsExtractor()
+DescriptorExtractor * Settings::createDescriptorExtractor()
 {
 	cv::DescriptorExtractor * extractor = 0;
+	GPUFeature2D * extractorGPU = 0;
 	QString str = getFeature2D_2Descriptor();
 	QStringList split = str.split(':');
 	if(split.size()==2)
@@ -517,7 +530,7 @@ cv::DescriptorExtractor * Settings::createDescriptorsExtractor()
 					{
 						if(getFeature2D_ORB_gpu() && cv::gpu::getCudaEnabledDeviceCount())
 						{
-							extractor = new GPUORB(
+							extractorGPU = new GPUORB(
 									getFeature2D_ORB_nFeatures(),
 									getFeature2D_ORB_scaleFactor(),
 									getFeature2D_ORB_nLevels(),
@@ -562,11 +575,12 @@ cv::DescriptorExtractor * Settings::createDescriptorsExtractor()
 					{
 						if(getFeature2D_SURF_gpu() && cv::gpu::getCudaEnabledDeviceCount())
 						{
-							extractor = new GPUSURF(
+							extractorGPU = new GPUSURF(
 									getFeature2D_SURF_hessianThreshold(),
 									getFeature2D_SURF_nOctaves(),
 									getFeature2D_SURF_nOctaveLayers(),
 									getFeature2D_SURF_extended(),
+									getFeature2D_SURF_keypointsRatio(),
 									getFeature2D_SURF_upright());
 							if(VERBOSE)printf("Settings::createDescriptorsExtractor() type=%s (GPU)\n", strategies.at(index).toStdString().c_str());
 						}
@@ -609,12 +623,16 @@ cv::DescriptorExtractor * Settings::createDescriptorsExtractor()
 			}
 		}
 	}
-	if(!extractor)
+
+	Q_ASSERT(extractorGPU!=0 || extractor!=0);
+	if(extractorGPU)
 	{
-		printf("ERROR: descriptor strategy not found !? Using default SURF...\n");
+		return new DescriptorExtractor(extractorGPU);
-		extractor = new cv::SURF();
+	}
+	else
+	{
+		return new DescriptorExtractor(extractor);
 	}
-	return extractor;
 }
 
 QString Settings::currentDetectorType()
@@ -808,3 +826,53 @@ int Settings::getHomographyMethod()
 	if(VERBOSE)printf("Settings::getHomographyMethod() method=%d\n", method);
 	return method;
 }
+
+KeypointDetector::KeypointDetector(cv::FeatureDetector * featureDetector) :
+	featureDetector_(featureDetector),
+	gpuFeature2D_(0)
+{
+	Q_ASSERT(featureDetector_!=0);
+}
+KeypointDetector::KeypointDetector(GPUFeature2D * gpuFeature2D) :
+	featureDetector_(0),
+	gpuFeature2D_(gpuFeature2D)
+{
+	Q_ASSERT(gpuFeature2D_!=0);
+}
+void KeypointDetector::detect(const cv::Mat & image, std::vector<cv::KeyPoint> & keypoints)
+{
+	if(featureDetector_)
+	{
+		featureDetector_->detect(image, keypoints);
+	}
+	else // assume GPU
+	{
+		gpuFeature2D_->detectKeypoints(image, keypoints);
+	}
+}
+
+DescriptorExtractor::DescriptorExtractor(cv::DescriptorExtractor * descriptorExtractor) :
+	descriptorExtractor_(descriptorExtractor),
+	gpuFeature2D_(0)
+{
+	Q_ASSERT(descriptorExtractor_!=0);
+}
+DescriptorExtractor::DescriptorExtractor(GPUFeature2D * gpuFeature2D) :
+	descriptorExtractor_(0),
+	gpuFeature2D_(gpuFeature2D)
+{
+	Q_ASSERT(gpuFeature2D_!=0);
+}
+void DescriptorExtractor::compute(const cv::Mat & image,
+		std::vector<cv::KeyPoint> & keypoints,
+		cv::Mat & descriptors)
+{
+	if(descriptorExtractor_)
+	{
+		descriptorExtractor_->compute(image, keypoints, descriptors);
+	}
+	else // assume GPU
+	{
+		gpuFeature2D_->computeDescriptors(image, keypoints, descriptors);
+	}
+}

src/Settings.h

@@ -10,7 +10,9 @@
 #include <QtCore/QByteArray>
 #include <opencv2/features2d/features2d.hpp>
 
-class Camera;
+class KeypointDetector;
+class DescriptorExtractor;
+class GPUFeature2D;
 
 typedef QMap<QString, QVariant> ParametersMap; // Key, value
 typedef QMap<QString, QString> ParametersType; // Key, type
@@ -129,6 +131,7 @@ class Settings
 	PARAMETER(Feature2D, SURF_extended, bool, true, "Extended descriptor flag (true - use extended 128-element descriptors; false - use 64-element descriptors).");
 	PARAMETER(Feature2D, SURF_upright, bool, false, "Up-right or rotated features flag (true - do not compute orientation of features; false - compute orientation).");
 	PARAMETER(Feature2D, SURF_gpu, bool, false, "GPU-SURF: Use GPU version of SURF. This option is enabled only if OpenCV is built with CUDA and GPUs are detected.");
+	PARAMETER(Feature2D, SURF_keypointsRatio, float, 0.01f, "Used with SURF GPU.");
 
 	PARAMETER(Feature2D, BRISK_thresh, int, 30, "FAST/AGAST detection threshold score.");
 	PARAMETER(Feature2D, BRISK_octaves, int, 3, "Detection octaves. Use 0 to do single scale.");
@@ -214,8 +217,8 @@ public:
 	static void resetParameter(const QString & key) {if(defaultParameters_.contains(key)) parameters_.insert(key, defaultParameters_.value(key));}
 	static QVariant getParameter(const QString & key) {return parameters_.value(key, QVariant());}
 
-	static cv::FeatureDetector * createFeaturesDetector();
+	static KeypointDetector * createKeypointDetector();
-	static cv::DescriptorExtractor * createDescriptorsExtractor();
+	static DescriptorExtractor * createDescriptorExtractor();
 
 	static QString currentDescriptorType();
 	static QString currentDetectorType();
@@ -238,5 +241,32 @@ private:
 	static Settings dummyInit_;
 };
 
+class KeypointDetector
+{
+public:
+	KeypointDetector(cv::FeatureDetector * featureDetector);
+	KeypointDetector(GPUFeature2D * gpuFeature2D);
+
+	void detect(const cv::Mat & image, std::vector<cv::KeyPoint> & keypoints);
+
+private:
+	cv::FeatureDetector * featureDetector_;
+	GPUFeature2D * gpuFeature2D_;
+};
+
+class DescriptorExtractor
+{
+public:
+	DescriptorExtractor(cv::DescriptorExtractor * descriptorExtractor);
+	DescriptorExtractor(GPUFeature2D * gpuFeature2D);
+
+	void compute(const cv::Mat & image,
+			std::vector<cv::KeyPoint> & keypoints,
+			cv::Mat & descriptors);
+
+private:
+	cv::DescriptorExtractor * descriptorExtractor_;
+	GPUFeature2D * gpuFeature2D_;
+};
 
 #endif /* SETTINGS_H_ */