vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

modules/tracking/samples/kcf.cpp

@@ -0,0 +1,82 @@
+/*----------------------------------------------
+ * Usage:
+ * example_tracking_kcf <video_name>
+ *
+ * example:
+ * example_tracking_kcf Bolt/img/%04.jpg
+ * example_tracking_kcf faceocc2.webm
+ *--------------------------------------------------*/
+
+#include <opencv2/core/utility.hpp>
+#include <opencv2/tracking.hpp>
+#include <opencv2/videoio.hpp>
+#include <opencv2/highgui.hpp>
+#include <iostream>
+#include <cstring>
+#include "samples_utility.hpp"
+
+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;
+  Rect 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;
+  }
+
+}