opencv轮廓检测c++形态学

以下是使用OpenCV进行轮廓检测和形态学运算的C++代码示例：

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

using namespace cv;
using namespace std;

int main()
{
    // 读取图像
    Mat src = imread("image.jpg");

    // 灰度化
    Mat gray;
    cvtColor(src, gray, COLOR_BGR2GRAY);

    // 二值化
    Mat binary;
    threshold(gray, binary, 0, 255, THRESH_BINARY_INV | THRESH_OTSU);

    // 形态学操作
    Mat kernel = getStructuringElement(MORPH_RECT, Size(3, 3));
    Mat morph;
    morphologyEx(binary, morph, MORPH_OPEN, kernel);

    // 轮廓检测
    vector<vector<Point>> contours;
    vector<Vec4i> hierarchy;
    findContours(morph, contours, hierarchy, RETR_EXTERNAL, CHAIN_APPROX_SIMPLE);

    // 绘制轮廓
    Mat result(src.size(), CV_8U, Scalar(255));
    drawContours(result, contours, -1, Scalar(0), 2);

    // 显示结果
    imshow("src", src);
    imshow("result", result);
    waitKey(0);

    return 0;
}