3 * Hybrid Tracking in OpenCV
4 * Usage: ./hybridtrackingsample live
6 * For Benchmarking against the Bonn benchmark dataset
7 * wget http://www.iai.uni-bonn.de/~kleind/tracking/datasets/seqG.zip
8 * unzip seqG.zip -d ./seqG
9 * ffmpeg -i seqG/Vid_G_rubikscube.avi seqG/%04d.png
10 * ./hytrack seqG/Vid_G_rubikscube.txt
18 #include "opencv2/highgui/highgui.hpp"
19 #include "opencv2/contrib/hybridtracker.hpp"
27 bool selectObject = false;
31 static void drawRectangle(Mat* img, Rect win) {
32 rectangle(*img, Point(win.x, win.y), Point(win.x + win.width, win.y
33 + win.height), Scalar(0, 255, 0), 2, CV_AA);
36 static void onMouse(int event, int x, int y, int, void*) {
38 selection.x = MIN(x, origin.x);
39 selection.y = MIN(y, origin.y);
40 selection.width = std::abs(x - origin.x);
41 selection.height = std::abs(y - origin.y);
42 selection &= Rect(0, 0, image.cols, image.rows);
46 case EVENT_LBUTTONDOWN:
48 selection = Rect(x, y, 0, 0);
60 printf("Usage: ./hytrack live or ./hytrack <test_file> \n\
61 For Live View or Benchmarking. Read documentation is source code.\n\n");
65 int main(int argc, char** argv)
74 char test_file[20] = "";
76 if (strcmp(argv[1], "live") != 0)
78 sprintf(test_file, "%s", argv[1]);
79 f = fopen(test_file, "r");
81 int values_read = fscanf(f, "%s\n", vid);
82 CV_Assert(values_read == 1);
83 cout << "Benchmarking against " << vid << endl;
91 cout << "Failed to open camera" << endl;
94 cout << "Opened camera" << endl;
95 cap.set(CAP_PROP_FRAME_WIDTH, 640);
96 cap.set(CAP_PROP_FRAME_HEIGHT, 480);
100 HybridTrackerParams params;
101 // motion model params
102 params.motion_model = CvMotionModel::LOW_PASS_FILTER;
103 params.low_pass_gain = 0.1f;
105 params.ms_tracker_weight = 0.8f;
106 params.ms_params.tracking_type = CvMeanShiftTrackerParams::HS;
107 // feature tracking params
108 params.ft_tracker_weight = 0.2f;
109 params.ft_params.feature_type = CvFeatureTrackerParams::OPTICAL_FLOW;
110 params.ft_params.window_size = 0;
112 HybridTracker tracker(params);
113 char img_file[20] = "seqG/0001.png";
114 char img_file_num[10];
115 namedWindow("Win", 1);
117 setMouseCallback("Win", onMouse, 0);
133 int values_read = fscanf(f, "%d %f %f %f %f\n", &i, &w[0], &w[1], &w[2], &w[3]);
134 CV_Assert(values_read == 5);
135 sprintf(img_file, "seqG/%04d.png", i);
136 image = imread(img_file, IMREAD_COLOR);
139 selection = Rect(cvRound(w[0]*image.cols), cvRound(w[1]*image.rows),
140 cvRound(w[2]*image.cols), cvRound(w[3]*image.rows));
143 sprintf(img_file_num, "Frame: %d", i);
144 putText(image, img_file_num, Point(10, image.rows-20), FONT_HERSHEY_PLAIN, 0.75, Scalar(255, 255, 255));
150 tracker.newTracker(image, selection);
156 tracker.updateTracker(image);
157 drawRectangle(&image, tracker.getTrackingWindow());
160 if (selectObject && selection.width > 0 && selection.height > 0)
162 Mat roi(image, selection);
163 bitwise_not(roi, roi);
166 drawRectangle(&image, Rect(cvRound(w[0]*image.cols), cvRound(w[1]*image.rows),
167 cvRound(w[2]*image.cols), cvRound(w[3]*image.rows)));
168 imshow("Win", image);