Added Multi-tracker functionality and example

1. Multi-tracker classes (multiTracker.cpp)
2. Multi-tracker example (multiTracker_test.cpp)
3. Fixed a rare bug (OpenCL runtime error)

modules/tracking/include/opencv2/tracking/tracker.hpp

@@ -1366,7 +1366,6 @@ void CV_EXPORTS_W selectROI(const std::string& windowName, Mat img, std::vector<
 
 
 /************************************ Multi-Tracker Classes ************************************/
-
 class CV_EXPORTS_W MultiTracker_Alt
 {
 public:
@@ -1376,15 +1375,15 @@ public:
 	bool update(const Mat& image);
 
 	int targetNum = 0;
-	std::vector <Ptr<Tracker> > trackers;
+	std::vector <Ptr<Tracker>> trackers;
 	std::vector <Rect2d> boundingBoxes;
 	std::vector<Scalar> colors;
 };
 
-class CV_EXPORTS_W MultiTrackerTLD : public MultiTracker_Alt
+class CV_EXPORTS_W MultiTrackerTLD : public MultiTracker
 {
 public:
-	bool update_opt(const Mat& image);
+	bool update(const Mat& image);
 };
 
 //! @}

modules/tracking/samples/multiTracker_test.cpp

@@ -49,7 +49,11 @@ using namespace std;
 using namespace cv;
 
 #define NUM_TEST_FRAMES 100
+<<<<<<< HEAD
 #define TEST_VIDEO_INDEX 15		//TLD Dataset Video Index from 1-10 for TLD and 1-60 for VOT
+=======
+#define TEST_VIDEO_INDEX 7		//TLD Dataset Video Index from 1-10
+>>>>>>> Added Multi-tracker functionality and example
 //#define RECORD_VIDEO_FLG
 
 static Mat image;
@@ -119,8 +123,17 @@ int main()
 
 	//From TLD dataset
 	selectObject = true;
+<<<<<<< HEAD
 	Rect2d boundingBox1 = tld::tld_InitDataset(TEST_VIDEO_INDEX, "D:/opencv/VOT 2015", 1);
 	Rect2d boundingBox2(470, 490, 50, 120);
+=======
+	Rect2d boundingBox1 = tld::tld_InitDataset(TEST_VIDEO_INDEX, "D:/opencv/TLD_dataset");
+	Rect2d boundingBox2;
+	boundingBox2.x = 280;
+	boundingBox2.y = 60;
+	boundingBox2.width = 40;
+	boundingBox2.height = 60;
+>>>>>>> Added Multi-tracker functionality and example
 
 	frame = tld::tld_getNextDatasetFrame();
 	frame.copyTo(image);
@@ -129,14 +142,22 @@ int main()
 #ifdef RECORD_VIDEO_FLG
 	String outputFilename = "test.avi";
 	VideoWriter outputVideo;
+<<<<<<< HEAD
 	outputVideo.open(outputFilename, -1, 15, Size(image.cols, image.rows));
+=======
+	outputVideo.open(outputFilename, -1, 30, Size(image.cols, image.rows));
+>>>>>>> Added Multi-tracker functionality and example
 
 	if (!outputVideo.isOpened())
 	{
 		std::cout << "!!! Output video could not be opened" << std::endl;
 		getchar();
+<<<<<<< HEAD
 		return 0;
 
+=======
+		return;
+>>>>>>> Added Multi-tracker functionality and example
 	}
 #endif
 
@@ -180,17 +201,26 @@ int main()
 				{
 					//initializes the tracker
 					mt.addTarget(frame, boundingBox1, tracker_algorithm_name);
+<<<<<<< HEAD
 					rectangle(frame, boundingBox1, mt.colors[0], 2, 1);
 
 
 					mt.addTarget(frame, boundingBox2, tracker_algorithm_name);
 					rectangle(frame, boundingBox2, mt.colors[1], 2, 1);
+=======
+					rectangle(image, boundingBox1, mt.colors[0], 2, 1);
+
+
+					mt.addTarget(frame, boundingBox2, tracker_algorithm_name);
+					rectangle(image, boundingBox2, mt.colors[1], 2, 1);
+>>>>>>> Added Multi-tracker functionality and example
 					initialized = true;
 				}
 				else
 				{
 					//updates the tracker
 					if (mt.update(frame))
+<<<<<<< HEAD
 					{
 						for (int i = 0; i < mt.targetNum; i++)
 							rectangle(frame, mt.boundingBoxes[i], mt.colors[i], 2, 1);
@@ -201,6 +231,16 @@ int main()
 
 #ifdef RECORD_VIDEO_FLG
 			outputVideo << frame;
+=======
+							for (int i=0; i < mt.targetNum; i++)
+								rectangle(image, mt.boundingBoxes[i], mt.colors[i], 2, 1);
+				}
+			}
+			imshow("Tracking API", image);
+
+#ifdef RECORD_VIDEO_FLG
+			outputVideo << image;
+>>>>>>> Added Multi-tracker functionality and example
 #endif
 
 
@@ -209,7 +249,11 @@ int main()
 			double t1 = (e2 - e1) / getTickFrequency();
 			cout << frameCounter << "\tframe :  " << t1 * 1000.0 << "ms" << endl;
 
+<<<<<<< HEAD
 			//waitKey(0);
+=======
+			waitKey(0);
+>>>>>>> Added Multi-tracker functionality and example
 		}
 	}
 

modules/tracking/src/multiTracker.cpp

@@ -65,8 +65,6 @@ namespace cv
 		else
 			colors.push_back(Scalar(rand() % 256, rand() % 256, rand() % 256));
 
-
-
 		//Target counter
 		targetNum++;
 
@@ -750,5 +748,4 @@ namespace cv
 		//t = (e2 - e1) / getTickFrequency()*1000.0;
 		//printf("NN: %d\t%f\n", patches.size(), t);
 	}
-
 }