I want to run a multi object tracking code nuder opencv 3.1 with contrib.
In the code, there is a line with selectROI().
Console said to me
"Select an object to track and then press SPACE or ENTER button!
Finish the selection process by pressing ESC button!".
I could select roi with mouse click.
But the window can't capture my keyboard input. I can't proceed next step. What is a problem?
MultiTracker trackers(trackingAlg);
// container of the tracked objects
vector objects;
// set input video
std::string video = argv[1];
VideoCapture cap(video);
Mat frame;
// get bounding box
cap >> frame;
selectROI("tracker", frame, objects);
//quit when the tracked object(s) is not provided
if (objects.size()<1)
return 0;
// initialize the tracker
trackers.add(frame, objects);
// do the tracking
printf("Start the tracking process, press ESC to quit.\n");
for (;;){
// get frame from the video
cap >> frame;
// stop the program if no more images
if (frame.rows == 0 || frame.cols == 0)
break;
//update the tracking result
trackers.update(frame);
// draw the tracked object
for (unsigned i = 0; i
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