diff --git a/src/yolo_console_dll.cpp b/src/yolo_console_dll.cpp
index adbe873b..2e05f7ac 100644
--- a/src/yolo_console_dll.cpp
+++ b/src/yolo_console_dll.cpp
@@ -76,18 +76,19 @@ int main()
 				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
diff --git a/src/yolo_v2_class.cpp b/src/yolo_v2_class.cpp
index 31f623cf..e8be427e 100644
--- a/src/yolo_v2_class.cpp
+++ b/src/yolo_v2_class.cpp
@@ -102,6 +102,15 @@ YOLODLL_API Detector::~Detector()
 #endif
 }
 
+YOLODLL_API int Detector::get_net_width() {
+	detector_gpu_t &detector_gpu = *reinterpret_cast<detector_gpu_t *>(detector_gpu_ptr.get());
+	return detector_gpu.net.w;
+}
+YOLODLL_API int Detector::get_net_height() {
+	detector_gpu_t &detector_gpu = *reinterpret_cast<detector_gpu_t *>(detector_gpu_ptr.get());
+	return detector_gpu.net.h;
+}
+
 
 YOLODLL_API std::vector<bbox_t> Detector::detect(std::string image_filename, float thresh)
 {
diff --git a/src/yolo_v2_class.hpp b/src/yolo_v2_class.hpp
index 9a8baa62..c6cad84b 100644
--- a/src/yolo_v2_class.hpp
+++ b/src/yolo_v2_class.hpp
@@ -51,6 +51,8 @@ public:
 	YOLODLL_API std::vector<bbox_t> detect(image_t img, float thresh = 0.2);
 	static YOLODLL_API image_t load_image(std::string image_filename);
 	static YOLODLL_API void free_image(image_t m);
+	YOLODLL_API int get_net_width();
+	YOLODLL_API int get_net_height();
 
 	YOLODLL_API std::vector<bbox_t> tracking(std::vector<bbox_t> cur_bbox_vec, int const frames_story = 4);
 
@@ -59,8 +61,13 @@ public:
 	{
 		if(mat.data == NULL)
 			throw std::runtime_error("file not found");
-		auto image_ptr = mat_to_image(mat);
-		return detect(*image_ptr, thresh);
+		cv::Mat det_mat;
+		cv::resize(mat, det_mat, cv::Size(get_net_width(), get_net_height()));
+		auto image_ptr = mat_to_image(det_mat);
+		auto detection_boxes = detect(*image_ptr, thresh);
+		float wk = (float)mat.cols / det_mat.cols, hk = (float)mat.rows / det_mat.rows;
+		for (auto &i : detection_boxes) i.x*=wk, i.w*= wk, i.y*=hk, i.h*=hk;
+		return detection_boxes;
 	}
 
 	static std::shared_ptr<image_t> mat_to_image(cv::Mat img)