revisions 8681 and 8688 restored. Warning fixed.

Warning: changes beak binary compatibility

samples/cpp/core_vision_tracking_image.cpp

@@ -0,0 +1,55 @@
+#include <opencv2/core/core.hpp>        // Basic OpenCV structures (cv::Mat, Scalar)
+#include <opencv2/highgui/highgui.hpp>  // OpenCV window I/O
+#include <opencv2/core_vision_api/tracker.hpp>
+
+#include <stdio.h>
+#include <string>
+#include <vector>
+
+using namespace std;
+using namespace cv;
+
+const string WindowName = "Face Detection example";
+const Scalar RectColor = CV_RGB(0,255,0);
+
+int main()
+{
+    namedWindow(WindowName);
+    cv::moveWindow(WindowName, 100, 100);
+
+    Mat Viewport;
+    Mat ReferenceFrame = imread("board.jpg");
+    if (ReferenceFrame.empty())
+    {
+        printf("Error: Cannot load input image\n");
+        return 1;
+    }
+
+    cv::Ptr<nv::Tracker> tracker = nv::Algorithm::create<nv::Tracker>("nv::Tracker::OpticalFlow");
+
+    tracker->initialize();
+
+    // First frame for initialization
+    tracker->feed(ReferenceFrame);
+
+    nv::Tracker::TrackedObjectHandler obj = tracker->addObject(cv::Rect(100,100, 200, 200));
+
+    while(true)
+    {
+        tracker->feed(ReferenceFrame);
+
+        if (obj->getStatus() == nv::Tracker::LOST_STATUS)
+            break;
+
+        cv::Rect currentLocation = obj->getLocation();
+
+        ReferenceFrame.copyTo(Viewport);
+        rectangle(Viewport, currentLocation, RectColor);
+
+        imshow(WindowName, Viewport);
+
+        if (cvWaitKey(30) >= 0) break;
+    }
+
+    return 0;
+}