Merge pull request #1552 from amuhic:master

Implementation of CSR-DCF tracker (#1552)

* Initial commit for CSR-DCF tracker implementation

* Fixes for automatic build

* General code fixes

* Removed unused parameters. Added CSRT to automatic tests.

* Fixed VS build warnings. Fixed a bug with gray sequences.

* Fixed VS build errors for samples file.

modules/tracking/samples/csrt.cpp

@@ -0,0 +1,144 @@
+#include <opencv2/core/utility.hpp>
+#include <opencv2/tracking.hpp>
+#include <opencv2/videoio.hpp>
+#include <opencv2/highgui.hpp>
+#include <iostream>
+#include <cstring>
+#include <fstream>
+#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_csrt <video_name>\n"
+            " examples:\n"
+            " example_tracking_csrt Bolt/img/%04.jpg\n"
+            " example_tracking_csrt Bolt/img/%04.jpg Bolt/grouondtruth.txt\n"
+            " example_tracking_csrt faceocc2.webm\n"
+            << endl;
+        return 0;
+    }
+
+    // create the tracker
+    Ptr<TrackerCSRT> tracker = TrackerCSRT::create();
+
+    // const char* param_file_path = "/home/amuhic/Workspace/3_dip/params.yml";
+    // FileStorage fs(params_file_path, FileStorage::WRITE);
+    // tracker->write(fs);
+    // FileStorage fs(param_file_path, FileStorage::READ);
+    // tracker->read( fs.root());
+
+    // set input video
+    std::string video = argv[1];
+    VideoCapture cap(video);
+    // and read first frame
+    Mat frame;
+    cap >> frame;
+
+    // target bounding box
+    Rect2d roi;
+    if (argc > 2) {
+        // read first line of ground-truth file
+        std::string groundtruthPath = argv[2];
+        std::ifstream gtIfstream(groundtruthPath.c_str());
+        std::string gtLine;
+        getline(gtIfstream, gtLine);
+        gtIfstream.close();
+
+        // parse the line by elements
+        std::stringstream gtStream(gtLine);
+        std::string element;
+        std::vector<int> elements;
+        while (std::getline(gtStream, element, ','))
+        {
+            elements.push_back(cvRound(std::atof(element.c_str())));
+        }
+
+        if (elements.size() == 4) {
+            // ground-truth is rectangle
+            roi = cv::Rect(elements[0], elements[1], elements[2], elements[3]);
+        }
+        else if (elements.size() == 8) {
+            // ground-truth is polygon
+            int xMin = cvRound(min(elements[0], min(elements[2], min(elements[4], elements[6]))));
+            int yMin = cvRound(min(elements[1], min(elements[3], min(elements[5], elements[7]))));
+            int xMax = cvRound(max(elements[0], max(elements[2], max(elements[4], elements[6]))));
+            int yMax = cvRound(max(elements[1], max(elements[3], max(elements[5], elements[7]))));
+            roi = cv::Rect(xMin, yMin, xMax - xMin, yMax - yMin);
+
+            // create mask from polygon and set it to the tracker
+            cv::Rect aaRect = cv::Rect(xMin, yMin, xMax - xMin, yMax - yMin);
+            cout << aaRect.size() << endl;
+            Mat mask = Mat::zeros(aaRect.size(), CV_8UC1);
+            const int n = 4;
+            std::vector<cv::Point> poly_points(n);
+            //Translate x and y to rects start position
+            int sx = aaRect.x;
+            int sy = aaRect.y;
+            for (int i = 0; i < n; ++i) {
+                poly_points[i] = Point(elements[2 * i] - sx, elements[2 * i + 1] - sy);
+            }
+            cv::fillConvexPoly(mask, poly_points, Scalar(1.0), 8);
+            mask.convertTo(mask, CV_32FC1);
+            tracker->setInitialMask(mask);
+        }
+        else {
+            std::cout << "Number of ground-truth elements is not 4 or 8." << std::endl;
+        }
+
+    }
+    else {
+        // second argument is not given - user selects target
+        roi = selectROI("tracker", frame, true, false);
+    }
+
+    //quit if ROI was not selected
+    if (roi.width == 0 || roi.height == 0)
+        return 0;
+
+    // initialize the tracker
+    int64 t1 = cv::getTickCount();
+    tracker->init(frame, roi);
+    int64 t2 = cv::getTickCount();
+    int64 tick_counter = t2 - t1;
+
+    // do the tracking
+    printf("Start the tracking process, press ESC to quit.\n");
+    int frame_idx = 1;
+    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
+        t1 = cv::getTickCount();
+        bool isfound = tracker->update(frame, roi);
+        t2 = cv::getTickCount();
+        tick_counter += t2 - t1;
+        frame_idx++;
+
+        if (!isfound) {
+            cout << "The target has been lost...\n";
+            waitKey(0);
+            return 0;
+        }
+
+        // draw the tracked object and show the image
+        rectangle(frame, roi, Scalar(255, 0, 0), 2, 1);
+        imshow("tracker", frame);
+
+        //quit on ESC button
+        if (waitKey(1) == 27)break;
+    }
+
+    cout << "Elapsed sec: " << static_cast<double>(tick_counter) / cv::getTickFrequency() << endl;
+    cout << "FPS: " << ((double)(frame_idx)) / (static_cast<double>(tick_counter) / cv::getTickFrequency()) << endl;
+}