OpenCV：无法从 contrib 存储库中找到模块(跟踪器，选择ROI)

我正在做一个涉及跟踪对象的项目，我正在尝试让OpenCV contrib repo的TrackerKCF工作。这是我在线获得的示例代码：

#include <opencv2/core/utility.hpp>
#include <opencv2/video/tracking.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
#include <cstring>
using namespace std;
using namespace cv;
int main( int argc, char** argv ){
  // show help
  if(argc<2){
    cout<<
      " Usage: example_tracking_kcf <video_name>n"
      " examples:n"
      " example_tracking_kcf Bolt/img/%04.jpgn"
      " example_tracking_kcf faceocc2.webmn"
      << endl;
    return 0;
  }
  // create the tracker
  Ptr<Tracker> tracker = TrackerKCF::create();
  // set input video
  std::string video = argv[1];
  VideoCapture cap(video);
  Mat frame;
  // get bounding box
  cap >> frame;
  Rect2d roi= selectROI("tracker", frame, true, false);
  //quit if ROI was not selected
  if(roi.width==0 || roi.height==0)
    return 0;
  // initialize the tracker
  tracker->init(frame,roi);
  // 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
    bool isfound = tracker->update(frame,roi);
    if(!isfound)
    {
        cout << "The target has been lost...n";
        waitKey(0);
        return 0;
    }
    // draw the tracked object
    rectangle( frame, roi, Scalar( 255, 0, 0 ), 2, 1 );
    // show image with the tracked object
    imshow("tracker",frame);
    //quit on ESC button
    if(waitKey(1)==27)break;
  }
}

但是，我收到以下错误：

tracktest.cpp: In function ‘int main(int, char**)’:
tracktest.cpp:33:7: error: ‘Tracker’ was not declared in this scope
   Ptr<Tracker> tracker = TrackerKCF::create();
       ^
tracktest.cpp:33:14: error: template argument 1 is invalid
   Ptr<Tracker> tracker = TrackerKCF::create();
              ^
tracktest.cpp:33:26: error: ‘TrackerKCF’ has not been declared
   Ptr<Tracker> tracker = TrackerKCF::create();
                          ^
tracktest.cpp:43:54: error: ‘selectROI’ was not declared in this scope
   Rect2d roi= selectROI("tracker", frame, true, false);
                                                      ^
tracktest.cpp:50:10: error: base operand of ‘->’ is not a pointer
   tracker->init(frame,roi);
          ^
tracktest.cpp:63:27: error: base operand of ‘->’ is not a pointer
     bool isfound = tracker->update(frame,roi);
                           ^
./tracktest.sh: line 5: ./tracktest: No such file or directory

我尝试重新安装 OpenCV 3.1.0 和相应的 contrib 存储库，似乎make完成得很好。我还试图找到tracker.cpp在我的OpenCV源目录中的位置，但没有弹出任何内容。

我认为这是因为我错误地安装了 contrib 模块，但我不确定。谁能弄清楚出了什么问题？提前谢谢。