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| #pragma once
|
| #include <opencv2/freetype.hpp>
|
| #include "../vp_node.h"
|
|
| namespace vp_nodes {
| // on screen display(short as osd) node.
| // used for displaying vehicle plate on frame, draw rectangle according to plate color
| class vp_plate_osd_node: public vp_node
| {
| private:
| // support chinese font
| cv::Ptr<cv::freetype::FreeType2> ft2;
| float mask_threshold = 0.3;
|
| // draw color on frame
| std::map<std::string, cv::Scalar> draw_colors {{"blue", cv::Scalar(255, 0, 0)},
| {"green", cv::Scalar(0, 255, 0)},
| {"yellow", cv::Scalar(0, 255, 255)},
| {"white", cv::Scalar(255, 255, 255)}};
|
| // map to Chinese
| std::map<std::string, std::string> text_colors {{"blue", "蓝"},
| {"green", "绿"},
| {"yellow", "黄"},
| {"white", "白"}};
|
| // history plates at the bottom of screen
| std::vector<cv::Mat> plates_his;
| int height_his = 100;
| int gap_his = 10;
| bool display_his = true;
|
| protected:
| virtual std::shared_ptr<vp_objects::vp_meta> handle_frame_meta(std::shared_ptr<vp_objects::vp_frame_meta> meta) override;
| public:
| vp_plate_osd_node(std::string node_name, std::string font = "", bool display_his = true);
| ~vp_plate_osd_node();
| };
| }
|
|
