OpenCV金字塔模板匹配c++调用拿个函数

以下是使用OpenCV实现金字塔模板匹配的示例代码：

#include <opencv2/opencv.hpp>
#include <iostream>

using namespace cv;
using namespace std;

void pyramidTemplateMatch(Mat& src, Mat& templ, float scale, int maxLevel)
{
    Mat result;
    for (int level = 0; level <= maxLevel; level++)
    {
        Mat img;
        resize(src, img, Size(round(src.cols * pow(scale, level)), round(src.rows * pow(scale, level))));
        matchTemplate(img, templ, result, TM_CCOEFF_NORMED);
        double minVal, maxVal;
        Point minLoc, maxLoc;
        minMaxLoc(result, &minVal, &maxVal, &minLoc, &maxLoc);
        if (level == maxLevel)
        {
            rectangle(src, Rect(maxLoc.x / pow(scale, level), maxLoc.y / pow(scale, level), templ.cols, templ.rows), Scalar(0, 0, 255), 2);
        }
    }
}

int main()
{
    Mat src = imread("test.jpg");
    Mat templ = imread("template.jpg");
    if (src.empty() || templ.empty())
    {
        cerr << "Can't read image!" << endl;
        return -1;
    }

    float scale = 0.8;
    int maxLevel = 3;
    pyramidTemplateMatch(src, templ, scale, maxLevel);

    imshow("result", src);
    waitKey();
    return 0;
}

该函数将输入图像和模板图像缩放到不同的金字塔层级，然后使用OpenCV的matchTemplate函数进行模板匹配，最后在原始图像上绘制矩形框以标记匹配位置。函数的参数包括输入图像、模板图像、缩放比例和最大金字塔层数。