import cv2; import numpy as np; # get the front image def fillHole(srcBw): ''' srcBw: 二值图，前景为白色 ''' temp = srcBw.copy() # Floodfill from point (0, 0) cv2.floodFill(temp, None, (0,0), 255) # Invert floodfilled image ...-Go服务器开发

下面是将给定的Python代码转换为C++函数的示例：

#include <opencv2/opencv.hpp>
#include <iostream>
#include <vector>
cv::Mat fillHole(const cv::Mat& srcBw) {
    cv::Mat temp = srcBw.clone();
    // Floodfill from point (0, 0)
    cv::floodFill(temp, cv::Point(0, 0), cv::Scalar(255));
    // Invert floodfilled image
    temp = ~temp;
    cv::imshow("temp", temp);
    // Invert floodfilled image
    cv::Mat out = srcBw | temp;
    return out;
}
void getRoi(const cv::Mat& im_out, const cv::Mat& img, std::vector<cv::Rect>& roi_list) {
    std::vector<std::vector<cv::Point>> contours;
    std::vector<cv::Vec4i> hierarchy;
    
    cv::findContours(im_out, contours, hierarchy, cv::RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE);
    
    for (size_t i = 0; i < contours.size(); ++i) {
        double area = cv:contourArea(contours[i]);
        if (area < 500)
            continue;
        
        cv:Rect roi = boundingRect(contours[i]);
        roi_list.push_back(roi);
        
        // Draw center point
        cv:circle(img, roi.tl() + roi.br() / 2, 2, CV_RGB(0, 255, 0), -1);
        
        // Draw bounding rectangle
        cv:rectangle(img, roi.tl(), roi.br(), CV_RGB(0, 255, 0), 2);
        
        // Save ROI image
        std:string filename = "money_roi/roi_" + std::to_string(i) + ".jpg";
        cv:imwrite(filename, img(roi));
        
        std:cout << "No." << std::setw(2) << std::setfill('0') << i << " Finished! " << std::endl;
    }
}
int main() {
    cv::Mat img = cv::imread("money.png");
    cv::Mat im_in, im_th, im_out;
    cv::cvtColor(img, im_in, cv::COLOR_BGR2GRAY);
    
    double otsu_threshold = cv:threshold(im_in, im_th, 0, 255, CV_THRESH_BINARY | CV_THRESH_OTSU);
    
    // Foreground is set to white, background is set to black
    im_th = ~im_th;
    // Call fillHole function
    im_out = fillHole(im_th);
    std::vector<cv:Rect> roi_list;
    
    // Find ROIs using the connected components method
    getRoi(im_out, img, roi_list);
    // Display images.
    cv:imshow("Thresholded Image", im_th);
    cv:imwrite("money_connect_binary.jpg", im_th);
    cv:imshow("Foreground", img);
    
// Save the colorful image
cv::
std:string color_image_filename = "money_connect_color.jpg";
cv2.imwrite(color_image_filename.c_str(), color_image);
return 0;
}