获取图形的高和宽

#include "pch.h"
#include <iostream>
#include <stdio.h>
#include <tchar.h>
#include <iostream>
#include <fstream>
#include <string>
#include <iostream>
#include <vector>
#include <opencv2\imgproc\types_c.h>
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <opencv2/core/core.hpp>
#include <opencv2\opencv.hpp>
#include <opencv2/highgui/highgui.hpp>
#include "opencv2/opencv.hpp"

using namespace cv;
using namespace std;

vector<vector<Point> > contours;
vector<vector<Point> > contours1;
vector<Vec4i> hierarchy;

int main()
{
Mat img1 = imread("3.jpg", 1);


int height = img1.rows;