c++ - OpenCV的findCirclesGrid找不到圆网格

我正在尝试用圆圈网格执行相机校准。我一直不成功，因为findCirclesGrid始终返回false，即使文件只不过是一个网格。我将其简化为以下简单程序:

#include <iostream>

#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/calib3d.hpp"

using namespace std;
using namespace cv;

int main(int argc, char *argv[]) {
    Mat image;
    // read an image
    if (argc < 2)
        image = imread("circleGridSmall.jpg");
    else
        image = imread(argv[1]);

    if (!image.data) {
        cout << "Image file not found\n";
        return 1;
    }

    imshow("image", image);
    waitKey(0);

    bool found;
    vector<Point2f> pointbuf;

    found = findCirclesGrid( image, Size(8, 12), pointbuf);
    printf("found: %d\n", found);
    return 0;
}

这个简单的图像:

c++ - OpenCV的findCirclesGrid找不到圆网格-LMLPHP

即使这样，findCirclesGrid仍返回false。我想念什么？

最佳答案

您已经在 Size()函数中反转了points_per_row和points_per_colum。
根据函数findCirclesGrid()的文档，第二个参数patternSize为

Size(points_per_row, points_per_colum)

Theferore:

// not
found = findCirclesGrid( image, Size(8, 12), pointbuf);
// but
found = findCirclesGrid( image, Size(12, 8), pointbuf);

关于c++ - OpenCV的findCirclesGrid找不到圆网格，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/37603445/

FindCirclesGrid

c++ - OpenCV的findCirclesGrid找不到圆网格