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#include "vp_ba_person_falldown_node.h"
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namespace vp_nodes
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{
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vp_ba_person_falldown_node::vp_ba_person_falldown_node(std::string node_name,
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bool need_record_image,
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bool need_record_video) : vp_node(node_name), need_record_image(need_record_image), need_record_video(need_record_video)
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{
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VP_INFO(vp_utils::string_format("[%s] %s", node_name.c_str(), to_string().c_str()));
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this->initialized();
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}
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vp_ba_person_falldown_node::~vp_ba_person_falldown_node()
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{
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deinitialized();
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}
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std::string vp_ba_person_falldown_node::to_string()
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{
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/*
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* return vertexs of all jam regions
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* [channel0: x1,y1 x2,y2 ...][channel1: x1,y1 x2,y2 ...]...
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*/
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return "vp_ba_person_falldown_node";
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}
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bool vp_ba_person_falldown_node::isPersonFallen(int person_width, int person_height, float fallThreshold)
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{
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return (person_height / person_width) < fallThreshold; // 跌倒判断条件
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}
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std::shared_ptr<vp_objects::vp_meta> vp_ba_person_falldown_node::handle_frame_meta(std::shared_ptr<vp_objects::vp_frame_meta> meta)
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{
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// for current channel
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auto &person_falldown_checking_status = all_person_falldown_checking_status[meta->channel_index];
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auto &person_falldown_result = all_person_falldown_results[meta->channel_index];
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auto &last_notify = all_last_notifys[meta->channel_index];
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// for vp_frame_target only
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// for vp_frame_target only
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std::vector<int> hit_traget_ids;
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for (auto &target : meta->targets)
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{
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if (target->primary_label == target->class_label_of_person)
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{
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auto len = target->tracks.size();
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// target has been tracked AND tracked enough frames
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if (len < check_interval_frames || target->track_id < 0)
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{
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continue;
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}
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// if target inside of stop region or not
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// if (!point_in_poly(loc, jam_region))
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//{
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// continue;
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//}
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if (isPersonFallen(target->width,target->height,person_fall_down_threshold))
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{
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person_falldown_checking_status[target->track_id]++;
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hit_traget_ids.push_back(target->track_id);
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}
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}
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}
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std::vector<int> involve_targets;
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for (auto i = person_falldown_checking_status.begin(); i != person_falldown_checking_status.end();)
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{
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if (std::find(hit_traget_ids.begin(), hit_traget_ids.end(), i->first) == hit_traget_ids.end())
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{
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// remove since it not satisfy stop condition
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i = person_falldown_checking_status.erase(i);
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continue;
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}
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if (i->second >= check_min_hit_frames)
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{
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involve_targets.push_back(i->first);
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}
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i++;
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}
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VP_INFO(std::to_string(involve_targets.size()));
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if (involve_targets.size() > 0 && (meta->frame_index - last_notify) > (check_notify_interval * meta->fps))
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{
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person_falldown_result = true;
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last_notify = meta->frame_index;
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// send record image and record video signal, recording actions would occur if record nodes exist in pipeline
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std::string image_file_name_without_ext = ""; // empty means no recording image
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std::string video_file_name_without_ext = ""; // empty means no recording video
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// send image record control meta
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if (need_record_image)
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{
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image_file_name_without_ext = vp_utils::time_format(NOW, "person_falldown_image__<year><mon><day><hour><min><sec><mili>");
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auto image_record_control_meta = std::make_shared<vp_objects::vp_image_record_control_meta>(meta->channel_index, image_file_name_without_ext, true);
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pendding_meta(image_record_control_meta);
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}
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// send video record control meta
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if (need_record_video)
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{
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video_file_name_without_ext = vp_utils::time_format(NOW, "person_falldown_video__<year><mon><day><hour><min><sec><mili>");
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auto video_record_control_meta = std::make_shared<vp_objects::vp_video_record_control_meta>(meta->channel_index, video_file_name_without_ext);
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pendding_meta(video_record_control_meta);
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}
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std::vector<vp_objects::vp_point> involve_region;
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auto ba_result = std::make_shared<vp_objects::vp_ba_result>(vp_objects::vp_ba_type::FALLDOWN,
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meta->channel_index,
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meta->frame_index,
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involve_targets,
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involve_region,
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"person_falldown", // meaningful label
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image_file_name_without_ext,
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video_file_name_without_ext);
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// fill back to frame meta
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meta->ba_results.push_back(ba_result);
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// info log
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VP_INFO(vp_utils::string_format("[%s] [channel %d] has found target person falldown.", node_name.c_str(), meta->channel_index));
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if (need_record_image || need_record_video)
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{
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VP_INFO(vp_utils::string_format("[%s] [channel %d] image & video record file names are: [%s & %s]", node_name.c_str(), meta->channel_index, image_file_name_without_ext.c_str(), video_file_name_without_ext.c_str()));
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}
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}
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if (involve_targets.size() == 0 && person_falldown_result)
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{
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person_falldown_result = false;
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last_notify = meta->frame_index;
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}
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return meta;
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}
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}
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