From 76e258520edb50e8bb897ba15aa9467579e70a6a Mon Sep 17 00:00:00 2001
From: AlexeyAB <alexeyab84@gmail.com>
Date: Wed, 20 Jun 2018 10:28:25 +0000
Subject: [PATCH] Minor fix

---
 src/yolo_v2_class.hpp |  223 +++++++++++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 196 insertions(+), 27 deletions(-)

diff --git a/src/yolo_v2_class.hpp b/src/yolo_v2_class.hpp
index 7d0516e..fd00dc0 100644
--- a/src/yolo_v2_class.hpp
+++ b/src/yolo_v2_class.hpp
@@ -1,15 +1,4 @@
 #pragma once
-#include <memory>
-#include <vector>
-#include <deque>
-#include <algorithm>
-
-#ifdef OPENCV
-#include <opencv2/opencv.hpp>			// C++
-#include "opencv2/highgui/highgui_c.h"	// C
-#include "opencv2/imgproc/imgproc_c.h"	// C
-#endif	// OPENCV
-
 #ifdef YOLODLL_EXPORTS
 #if defined(_MSC_VER)
 #define YOLODLL_API __declspec(dllexport) 
@@ -39,6 +28,17 @@
 	float *data;				// pointer to the image data
 };
 
+#ifdef __cplusplus
+#include <memory>
+#include <vector>
+#include <deque>
+#include <algorithm>
+
+#ifdef OPENCV
+#include <opencv2/opencv.hpp>			// C++
+#include "opencv2/highgui/highgui_c.h"	// C
+#include "opencv2/imgproc/imgproc_c.h"	// C
+#endif	// OPENCV
 
 class Detector {
 	std::shared_ptr<void> detector_gpu_ptr;
@@ -57,27 +57,28 @@
 	static YOLODLL_API void free_image(image_t m);
 	YOLODLL_API int get_net_width() const;
 	YOLODLL_API int get_net_height() const;
+	YOLODLL_API int get_net_color_depth() const;
 
 	YOLODLL_API std::vector<bbox_t> tracking_id(std::vector<bbox_t> cur_bbox_vec, bool const change_history = true, 
 												int const frames_story = 10, int const max_dist = 150);
 
+	std::vector<bbox_t> detect_resized(image_t img, int init_w, int init_h, float thresh = 0.2, bool use_mean = false)
+	{
+		if (img.data == NULL)
+			throw std::runtime_error("Image is empty");
+		auto detection_boxes = detect(img, thresh, use_mean);
+		float wk = (float)init_w / img.w, hk = (float)init_h / img.h;
+		for (auto &i : detection_boxes) i.x *= wk, i.w *= wk, i.y *= hk, i.h *= hk;
+		return detection_boxes;
+	}
+
 #ifdef OPENCV
 	std::vector<bbox_t> detect(cv::Mat mat, float thresh = 0.2, bool use_mean = false)
 	{
 		if(mat.data == NULL)
 			throw std::runtime_error("Image is empty");
 		auto image_ptr = mat_to_image_resize(mat);
-		return detect_resized(*image_ptr, mat.size(), thresh, use_mean);
-	}
-
-	std::vector<bbox_t> detect_resized(image_t img, cv::Size init_size, float thresh = 0.2, bool use_mean = false)
-	{
-		if (img.data == NULL)
-			throw std::runtime_error("Image is empty");
-		auto detection_boxes = detect(img, thresh, use_mean);
-		float wk = (float)init_size.width / img.w, hk = (float)init_size.height / img.h;
-		for (auto &i : detection_boxes) i.x *= wk, i.w *= wk, i.y *= hk, i.h *= hk;
-		return detection_boxes;
+		return detect_resized(*image_ptr, mat.cols, mat.rows, thresh, use_mean);
 	}
 
 	std::shared_ptr<image_t> mat_to_image_resize(cv::Mat mat) const
@@ -145,7 +146,7 @@
 
 
 
-#if defined(TRACK_OPTFLOW) && defined(OPENCV)
+#if defined(TRACK_OPTFLOW) && defined(OPENCV) && defined(GPU)
 
 #include <opencv2/cudaoptflow.hpp>
 #include <opencv2/cudaimgproc.hpp>
@@ -193,8 +194,7 @@
 	void update_cur_bbox_vec(std::vector<bbox_t> _cur_bbox_vec)
 	{
 		cur_bbox_vec = _cur_bbox_vec;
-		good_bbox_vec_flags.resize(cur_bbox_vec.size());
-		for (auto &i : good_bbox_vec_flags) i = true;
+		good_bbox_vec_flags = std::vector<bool>(cur_bbox_vec.size(), true);
 		cv::Mat prev_pts, cur_pts_flow_cpu;
 
 		for (auto &i : cur_bbox_vec) {
@@ -297,7 +297,8 @@
 				float moved_y = cur_key_pt.y - prev_key_pt.y;
 
 				if (abs(moved_x) < 100 && abs(moved_y) < 100 && good_bbox_vec_flags[i])
-					if (err_cpu.at<float>(0, i) < flow_error && status_cpu.at<unsigned char>(0, i) != 0)
+					if (err_cpu.at<float>(0, i) < flow_error && status_cpu.at<unsigned char>(0, i) != 0 &&
+						((float)cur_bbox_vec[i].x + moved_x) > 0 && ((float)cur_bbox_vec[i].y + moved_y) > 0)
 					{
 						cur_bbox_vec[i].x += moved_x + 0.5;
 						cur_bbox_vec[i].y += moved_y + 0.5;
@@ -320,6 +321,123 @@
 	}
 
 };
+
+#elif defined(TRACK_OPTFLOW) && defined(OPENCV)
+
+//#include <opencv2/optflow.hpp>
+#include <opencv2/video/tracking.hpp>
+
+class Tracker_optflow {
+public:
+	const int flow_error;
+
+
+	Tracker_optflow(int win_size = 9, int max_level = 3, int iterations = 8000, int _flow_error = -1) :
+		flow_error((_flow_error > 0)? _flow_error:(win_size*4))
+	{
+		sync_PyrLKOpticalFlow = cv::SparsePyrLKOpticalFlow::create();
+		sync_PyrLKOpticalFlow->setWinSize(cv::Size(win_size, win_size));	// 9, 15, 21, 31
+		sync_PyrLKOpticalFlow->setMaxLevel(max_level);		// +- 3 pt
+
+	}
+
+	// just to avoid extra allocations
+	cv::Mat dst_grey;
+	cv::Mat prev_pts_flow, cur_pts_flow;
+	cv::Mat status, err;
+
+	cv::Mat src_grey;	// used in both functions
+	cv::Ptr<cv::SparsePyrLKOpticalFlow> sync_PyrLKOpticalFlow;
+
+	std::vector<bbox_t> cur_bbox_vec;
+	std::vector<bool> good_bbox_vec_flags;
+
+	void update_cur_bbox_vec(std::vector<bbox_t> _cur_bbox_vec)
+	{
+		cur_bbox_vec = _cur_bbox_vec;
+		good_bbox_vec_flags = std::vector<bool>(cur_bbox_vec.size(), true);
+		cv::Mat prev_pts, cur_pts_flow;
+
+		for (auto &i : cur_bbox_vec) {
+			float x_center = (i.x + i.w / 2.0F);
+			float y_center = (i.y + i.h / 2.0F);
+			prev_pts.push_back(cv::Point2f(x_center, y_center));
+		}
+
+		if (prev_pts.rows == 0)
+			prev_pts_flow = cv::Mat();
+		else
+			cv::transpose(prev_pts, prev_pts_flow);
+	}
+
+
+	void update_tracking_flow(cv::Mat new_src_mat, std::vector<bbox_t> _cur_bbox_vec)
+	{
+		if (new_src_mat.channels() == 3) {
+
+			update_cur_bbox_vec(_cur_bbox_vec);
+
+			cv::cvtColor(new_src_mat, src_grey, CV_BGR2GRAY, 1);
+		}
+	}
+
+
+	std::vector<bbox_t> tracking_flow(cv::Mat new_dst_mat, bool check_error = true)
+	{
+		if (sync_PyrLKOpticalFlow.empty()) {
+			std::cout << "sync_PyrLKOpticalFlow isn't initialized \n";
+			return cur_bbox_vec;
+		}
+
+		cv::cvtColor(new_dst_mat, dst_grey, CV_BGR2GRAY, 1);
+
+		if (src_grey.rows != dst_grey.rows || src_grey.cols != dst_grey.cols) {
+			src_grey = dst_grey.clone();
+			return cur_bbox_vec;
+		}
+
+		if (prev_pts_flow.cols < 1) {
+			return cur_bbox_vec;
+		}
+
+		////sync_PyrLKOpticalFlow_gpu.sparse(src_grey_gpu, dst_grey_gpu, prev_pts_flow_gpu, cur_pts_flow_gpu, status_gpu, &err_gpu);	// OpenCV 2.4.x
+		sync_PyrLKOpticalFlow->calc(src_grey, dst_grey, prev_pts_flow, cur_pts_flow, status, err);	// OpenCV 3.x
+
+		dst_grey.copyTo(src_grey);
+
+		std::vector<bbox_t> result_bbox_vec;
+
+		if (err.rows == cur_bbox_vec.size() && status.rows == cur_bbox_vec.size())
+		{
+			for (size_t i = 0; i < cur_bbox_vec.size(); ++i)
+			{
+				cv::Point2f cur_key_pt = cur_pts_flow.at<cv::Point2f>(0, i);
+				cv::Point2f prev_key_pt = prev_pts_flow.at<cv::Point2f>(0, i);
+
+				float moved_x = cur_key_pt.x - prev_key_pt.x;
+				float moved_y = cur_key_pt.y - prev_key_pt.y;
+
+				if (abs(moved_x) < 100 && abs(moved_y) < 100 && good_bbox_vec_flags[i])
+					if (err.at<float>(0, i) < flow_error && status.at<unsigned char>(0, i) != 0 &&
+						((float)cur_bbox_vec[i].x + moved_x) > 0 && ((float)cur_bbox_vec[i].y + moved_y) > 0)
+					{
+						cur_bbox_vec[i].x += moved_x + 0.5;
+						cur_bbox_vec[i].y += moved_y + 0.5;
+						result_bbox_vec.push_back(cur_bbox_vec[i]);
+					}
+					else good_bbox_vec_flags[i] = false;
+				else good_bbox_vec_flags[i] = false;
+
+				//if(!check_error && !good_bbox_vec_flags[i]) result_bbox_vec.push_back(cur_bbox_vec[i]);
+			}
+		}
+
+		prev_pts_flow = cur_pts_flow.clone();
+
+		return result_bbox_vec;
+	}
+
+};
 #else
 
 class Tracker_optflow {};
@@ -329,7 +447,7 @@
 
 #ifdef OPENCV
 
-cv::Scalar obj_id_to_color(int obj_id) {
+static cv::Scalar obj_id_to_color(int obj_id) {
 	int const colors[6][3] = { { 1,0,1 },{ 0,0,1 },{ 0,1,1 },{ 0,1,0 },{ 1,1,0 },{ 1,0,0 } };
 	int const offset = obj_id * 123457 % 6;
 	int const color_scale = 150 + (obj_id * 123457) % 100;
@@ -471,3 +589,54 @@
 	}
 };
 #endif	// OPENCV
+
+//extern "C" {
+#endif	// __cplusplus
+
+/*
+	// C - wrappers
+	YOLODLL_API void create_detector(char const* cfg_filename, char const* weight_filename, int gpu_id);
+	YOLODLL_API void delete_detector();
+	YOLODLL_API bbox_t* detect_custom(image_t img, float thresh, bool use_mean, int *result_size);
+	YOLODLL_API bbox_t* detect_resized(image_t img, int init_w, int init_h, float thresh, bool use_mean, int *result_size);
+	YOLODLL_API bbox_t* detect(image_t img, int *result_size);
+	YOLODLL_API image_t load_img(char *image_filename);
+	YOLODLL_API void free_img(image_t m);
+
+#ifdef __cplusplus
+}	// extern "C"
+
+static std::shared_ptr<void> c_detector_ptr;
+static std::vector<bbox_t> c_result_vec;
+
+void create_detector(char const* cfg_filename, char const* weight_filename, int gpu_id) {
+	c_detector_ptr = std::make_shared<YOLODLL_API Detector>(cfg_filename, weight_filename, gpu_id);
+}
+
+void delete_detector() { c_detector_ptr.reset(); }
+
+bbox_t* detect_custom(image_t img, float thresh, bool use_mean, int *result_size) {
+	c_result_vec = static_cast<Detector*>(c_detector_ptr.get())->detect(img, thresh, use_mean);
+	*result_size = c_result_vec.size();
+	return c_result_vec.data();
+}
+
+bbox_t* detect_resized(image_t img, int init_w, int init_h, float thresh, bool use_mean, int *result_size) {
+	c_result_vec = static_cast<Detector*>(c_detector_ptr.get())->detect_resized(img, init_w, init_h, thresh, use_mean);
+	*result_size = c_result_vec.size();
+	return c_result_vec.data();
+}
+
+bbox_t* detect(image_t img, int *result_size) {
+	return detect_custom(img, 0.24, true, result_size);
+}
+
+image_t load_img(char *image_filename) {
+	return static_cast<Detector*>(c_detector_ptr.get())->load_image(image_filename);
+}
+void free_img(image_t m) {
+	static_cast<Detector*>(c_detector_ptr.get())->free_image(m);
+}
+
+#endif	// __cplusplus
+*/

--
Gitblit v1.10.0