c++ - OpenCV:无法从 contrib 存储库中找到模块(Tracker、selectROI)

Question

我正在从事一个涉及跟踪对象的项目，我正在尝试让 OpenCV contrib repo 的 TrackerKCF 发挥作用。这是我在网上得到的示例代码:

#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.jpg\n"
      " example_tracking_kcf faceocc2.webm\n"
      << 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，我得到了以下错误:

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 repo，看起来 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。

我假设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？提前致谢。

Answer 1

由于我莫名其妙的愚蠢，我忘记运行make install。现在一切都好!