各位好，请问这个C++的代码怎么写成python语言？

[C罗子]

#include <iostream>
#include <opencv2/opencv.hpp>
#include <opencv2/tracking/tracker.hpp>
#include <boost/filesystem.hpp>

const cv::Size MAX_DETECT_SIZE = cv::Size(100, 200);
const int MAX_MISS_FRAME = 10;
const double MIN_NEW_DETECT_INTERSECTION_RATE = 0.5;

class MyTracker {
private:
    static int next_id;
    int id;
    int n_miss_frame = 0;
    cv::Rect2d rect;
    cv::Ptr<cv::Tracker> cv_tracker;
public:

    MyTracker(const cv::Mat& _frame, const cv::Rect2d& _rect) 
        : id(next_id++), rect(_rect) {
        cv_tracker = cv::Tracker::create("BOOSTING"); //  or "MIL"
        cv_tracker->init(_frame, _rect);
    }

    bool update(const cv::Mat& _frame){
        n_miss_frame++;
        return cv_tracker->update(_frame, rect) && n_miss_frame < MAX_MISS_FRAME;
    }

    bool registerNewDetect(const cv::Rect2d& _new_detect){
        double intersection_rate = 1.0 * (_new_detect & rect).area() / (_new_detect | rect).area();
        bool is_registered = intersection_rate > MIN_NEW_DETECT_INTERSECTION_RATE;
        if (is_registered) n_miss_frame = 0;
        return is_registered;
    }

    void draw(cv::Mat& _image) const{
        cv::rectangle(_image, rect, cv::Scalar(255, 0, 0), 2, 1);
        cv::putText(_image, cv::format("%03d", id), cv::Point(rect.x + 5, rect.y + 17), 
                cv::FONT_HERSHEY_SIMPLEX, 0.5, cv::Scalar(255,0,0), 1, CV_AA);
    }
};
int MyTracker::next_id = 0;


int main(int argc, char* argv[]){
    if(argc != 2){
        std::cout << "usage: " << argv[0] << " videodir" << std::endl;
        exit(1);
    }

    namespace fs = boost::filesystem;
    std::vector<std::string> frame_paths;
    for(auto it = fs::directory_iterator(argv[1]); it != fs::directory_iterator(); ++it){
        frame_paths.push_back(it->path().string());
    }

    cv::HOGDescriptor detector;
    detector.setSVMDetector(cv::HOGDescriptor::getDefaultPeopleDetector());
    std::vector<MyTracker> trackers;

    for (auto& frame_path : frame_paths){
        std::cout << "frame : " << frame_path << std::endl;
        cv::Mat frame = cv::imread(frame_path);
        std::vector<cv::Rect> detections;
        detector.detectMultiScale(frame, detections);
        for (auto t_it = trackers.begin(); t_it != trackers.end();){
            t_it = (t_it->update(frame)) ? std::next(t_it) : trackers.erase(t_it);
        }

        for(auto& d_rect : detections){
            if (d_rect.size().area() > MAX_DETECT_SIZE.area()) continue;
            bool exists = std::any_of(trackers.begin(), trackers.end(), 
                    [&d_rect](MyTracker& t){return t.registerNewDetect(d_rect);});
            if(!exists) trackers.push_back(MyTracker(frame, d_rect));
        }

        cv::Mat image = frame.clone();
        for(auto& t : trackers) t.draw(image);
        for(auto& d_rect : detections) cv::rectangle(image, d_rect, cv::Scalar(0, 255, 0), 2, 1);
        cv::imshow("demo", image);
        cv::waitKey(1);
    }
    return 0;
}

我现在需要把这个代码写成python语言，但是我又不懂C++,请各位前辈帮忙。

[oyljerry]

python有opencv的库，然后就需要你自己对应的调用