Changed example of DLL/SO usage to work faster

AlexeyAB

2017-08-04 52462f2ba6d385054681156853684ce411144836

 src/yolo_console_dll.cpp

@@ -76,18 +76,19 @@
            cv::Mat frame, prev_frame;
            std::vector<bbox_t> result_vec, thread_result_vec;
            detector.nms = 0.02; // comment it - if track_id is not required
            std::thread td([]() {});
            for (cv::VideoCapture cap(filename); cap >> frame, cap.isOpened();) {
               auto image_ptr = detector.mat_to_image(frame);
               std::thread td([&]() { thread_result_vec = detector.detect(*image_ptr, 0.2); });
               td.join();
               result_vec = thread_result_vec;
               cv::Mat det_frame = frame;
               td = std::thread([&]() { thread_result_vec = detector.detect(det_frame, 0.2); });

               if (!prev_frame.empty()) {
                  result_vec = detector.tracking(result_vec);  // comment it - if track_id is not required
                  draw_boxes(prev_frame, result_vec, obj_names, 3);
                  show_result(result_vec, obj_names);
               }
               td.join();
               prev_frame = frame;
               result_vec = thread_result_vec;
            }
         }
         else {   // image file