From 84d6533cb8112f23a34d3de76435a10f4620f4b8 Mon Sep 17 00:00:00 2001
From: AlexeyAB <alexeyab84@gmail.com>
Date: Mon, 23 Oct 2017 13:43:03 +0000
Subject: [PATCH] Fixed OpenCV usage in the yolo_console_dll.cpp

---
 src/yolo_v2_class.cpp |  115 ++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 108 insertions(+), 7 deletions(-)

diff --git a/src/yolo_v2_class.cpp b/src/yolo_v2_class.cpp
index fb06985..bd14105 100644
--- a/src/yolo_v2_class.cpp
+++ b/src/yolo_v2_class.cpp
@@ -29,18 +29,24 @@
 	image images[FRAMES];
 	float *avg;
 	float *predictions[FRAMES];
+	int demo_index;
+	unsigned int *track_id;
 };
 
 
 YOLODLL_API Detector::Detector(std::string cfg_filename, std::string weight_filename, int gpu_id)
 {
 	int old_gpu_index;
+#ifdef GPU
 	cudaGetDevice(&old_gpu_index);
+#endif
 
 	detector_gpu_ptr = std::make_shared<detector_gpu_t>();
 	detector_gpu_t &detector_gpu = *reinterpret_cast<detector_gpu_t *>(detector_gpu_ptr.get());
 
+#ifdef GPU
 	cudaSetDevice(gpu_id);
+#endif
 	network &net = detector_gpu.net;
 	net.gpu_index = gpu_id;
 	//gpu_index = i;
@@ -66,7 +72,12 @@
 	detector_gpu.probs = (float **)calloc(l.w*l.h*l.n, sizeof(float *));
 	for (j = 0; j < l.w*l.h*l.n; ++j) detector_gpu.probs[j] = (float *)calloc(l.classes, sizeof(float));
 
+	detector_gpu.track_id = (unsigned int *)calloc(l.classes, sizeof(unsigned int));
+	for (j = 0; j < l.classes; ++j) detector_gpu.track_id[j] = 1;
+
+#ifdef GPU
 	cudaSetDevice(old_gpu_index);
+#endif
 }
 
 
@@ -75,29 +86,44 @@
 	detector_gpu_t &detector_gpu = *reinterpret_cast<detector_gpu_t *>(detector_gpu_ptr.get());
 	layer l = detector_gpu.net.layers[detector_gpu.net.n - 1];
 
+	free(detector_gpu.track_id);
+
 	free(detector_gpu.avg);
 	for (int j = 0; j < FRAMES; ++j) free(detector_gpu.predictions[j]);
 	for (int j = 0; j < FRAMES; ++j) if(detector_gpu.images[j].data) free(detector_gpu.images[j].data);
 
+	for (int j = 0; j < l.w*l.h*l.n; ++j) free(detector_gpu.probs[j]);
 	free(detector_gpu.boxes);
 	free(detector_gpu.probs);
-	for (int j = 0; j < l.w*l.h*l.n; ++j) free(detector_gpu.probs[j]);
 
 	int old_gpu_index;
+#ifdef GPU
 	cudaGetDevice(&old_gpu_index);
 	cudaSetDevice(detector_gpu.net.gpu_index);
+#endif
 
 	free_network(detector_gpu.net);
 
+#ifdef GPU
 	cudaSetDevice(old_gpu_index);
+#endif
+}
+
+YOLODLL_API int Detector::get_net_width() const {
+	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() const {
+	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)
+YOLODLL_API std::vector<bbox_t> Detector::detect(std::string image_filename, float thresh, bool use_mean)
 {
 	std::shared_ptr<image_t> image_ptr(new image_t, [](image_t *img) { if (img->data) free(img->data); delete img; });
 	*image_ptr = load_image(image_filename);
-	return detect(*image_ptr, thresh);
+	return detect(*image_ptr, thresh, use_mean);
 }
 
 static image load_image_stb(char *filename, int channels)
@@ -144,17 +170,19 @@
 	}
 }
 
-YOLODLL_API std::vector<bbox_t> Detector::detect(image_t img, float thresh)
+YOLODLL_API std::vector<bbox_t> Detector::detect(image_t img, float thresh, bool use_mean)
 {
 
 	detector_gpu_t &detector_gpu = *reinterpret_cast<detector_gpu_t *>(detector_gpu_ptr.get());
 	network &net = detector_gpu.net;
 	int old_gpu_index;
+#ifdef GPU
 	cudaGetDevice(&old_gpu_index);
 	cudaSetDevice(net.gpu_index);
+#endif
 	//std::cout << "net.gpu_index = " << net.gpu_index << std::endl;
 
-	float nms = .4;
+	//float nms = .4;
 
 	image im;
 	im.c = img.c;
@@ -162,12 +190,27 @@
 	im.h = img.h;
 	im.w = img.w;
 
-	image sized = resize_image(im, net.w, net.h);
+	image sized;
+	
+	if (net.w == im.w && net.h == im.h) {
+		sized = make_image(im.w, im.h, im.c);
+		memcpy(sized.data, im.data, im.w*im.h*im.c * sizeof(float));
+	}
+	else
+		sized = resize_image(im, net.w, net.h);
+
 	layer l = net.layers[net.n - 1];
 
 	float *X = sized.data;
 
-	network_predict(net, X);
+	float *prediction = network_predict(net, X);
+
+	if (use_mean) {
+		memcpy(detector_gpu.predictions[detector_gpu.demo_index], prediction, l.outputs * sizeof(float));
+		mean_arrays(detector_gpu.predictions, FRAMES, l.outputs, detector_gpu.avg);
+		l.output = detector_gpu.avg;
+		detector_gpu.demo_index = (detector_gpu.demo_index + 1) % FRAMES;
+	}
 
 	get_region_boxes(l, 1, 1, thresh, detector_gpu.probs, detector_gpu.boxes, 0, 0);
 	if (nms) do_nms_sort(detector_gpu.boxes, detector_gpu.probs, l.w*l.h*l.n, l.classes, nms);
@@ -189,6 +232,7 @@
 			bbox.h = b.h*im.h;
 			bbox.obj_id = obj_id;
 			bbox.prob = prob;
+			bbox.track_id = 0;
 
 			bbox_vec.push_back(bbox);
 		}
@@ -197,7 +241,64 @@
 	if(sized.data)
 		free(sized.data);
 
+#ifdef GPU
 	cudaSetDevice(old_gpu_index);
+#endif
 
 	return bbox_vec;
+}
+
+YOLODLL_API std::vector<bbox_t> Detector::tracking(std::vector<bbox_t> cur_bbox_vec, int const frames_story)
+{
+	detector_gpu_t &det_gpu = *reinterpret_cast<detector_gpu_t *>(detector_gpu_ptr.get());
+
+	bool prev_track_id_present = false;
+	for (auto &i : prev_bbox_vec_deque)
+		if (i.size() > 0) prev_track_id_present = true;
+
+	if (!prev_track_id_present) {
+		for (size_t i = 0; i < cur_bbox_vec.size(); ++i)
+			cur_bbox_vec[i].track_id = det_gpu.track_id[cur_bbox_vec[i].obj_id]++;
+		prev_bbox_vec_deque.push_front(cur_bbox_vec);
+		if (prev_bbox_vec_deque.size() > frames_story) prev_bbox_vec_deque.pop_back();
+		return cur_bbox_vec;
+	}
+
+	std::vector<unsigned int> dist_vec(cur_bbox_vec.size(), std::numeric_limits<unsigned int>::max());
+
+	for (auto &prev_bbox_vec : prev_bbox_vec_deque) {
+		for (auto &i : prev_bbox_vec) {
+			int cur_index = -1;
+			for (size_t m = 0; m < cur_bbox_vec.size(); ++m) {
+				bbox_t const& k = cur_bbox_vec[m];
+				if (i.obj_id == k.obj_id) {
+					float center_x_diff = (float)(i.x + i.w/2) - (float)(k.x + k.w/2);
+					float center_y_diff = (float)(i.y + i.h/2) - (float)(k.y + k.h/2);
+					unsigned int cur_dist = sqrt(center_x_diff*center_x_diff + center_y_diff*center_y_diff);
+					if (cur_dist < 100 && (k.track_id == 0 || dist_vec[m] > cur_dist)) {
+						dist_vec[m] = cur_dist;
+						cur_index = m;
+					}
+				}
+			}
+
+			bool track_id_absent = !std::any_of(cur_bbox_vec.begin(), cur_bbox_vec.end(), 
+				[&i](bbox_t const& b) { return b.track_id == i.track_id && b.obj_id == i.obj_id; });
+
+			if (cur_index >= 0 && track_id_absent){
+				cur_bbox_vec[cur_index].track_id = i.track_id;
+				cur_bbox_vec[cur_index].w = (cur_bbox_vec[cur_index].w + i.w) / 2;
+				cur_bbox_vec[cur_index].h = (cur_bbox_vec[cur_index].h + i.h) / 2;
+			}
+		}
+	}
+
+	for (size_t i = 0; i < cur_bbox_vec.size(); ++i)
+		if (cur_bbox_vec[i].track_id == 0)
+			cur_bbox_vec[i].track_id = det_gpu.track_id[cur_bbox_vec[i].obj_id]++;
+
+	prev_bbox_vec_deque.push_front(cur_bbox_vec);
+	if (prev_bbox_vec_deque.size() > frames_story) prev_bbox_vec_deque.pop_back();
+
+	return cur_bbox_vec;
 }
\ No newline at end of file

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