OpenCV学习九：line、rectangle、ellipse 、circle、fillPoly 绘制直线、矩形、椭圆、圆形、填充任意图形

最新推荐文章于 2024-01-24 13:16:37 发布

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本文介绍如何使用C++结合OpenCV库绘制多种基本图形，包括直线、椭圆、矩形、圆形及多边形填充，并展示了一个具体的实现示例。

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#include <stdio.h>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

int main(int argc, char** argv)
{
	//line ellipse rectangle circle fillPoly
	
	Mat Pic = Mat::zeros(600,1200,CV_8UC1);

	//line
	Point p1 = Point(200,200);
	Point p2; 
	p2.x = 700; 
	p2.y = 550;
	line(Pic, p1, p2, Scalar(255,255,255), 3);

	//ellipse
	ellipse(Pic, Point(Pic.cols/2, Pic.rows/2), Size(Pic.cols/4,Pic.rows/4), 90, 0, 360, Scalar(200,255,255), 3);

	//rectangle
	rectangle(Pic, Rect(100, 200, 300, 400), Scalar(255, 255, 255), 4);

	//circle
	circle(Pic, Point(Pic.cols/2, Pic.rows/2), 150, Scalar(150, 160, 170), 6);

	//fillPoly
	Point p0[1][5];
	p0[0][0] = Point(50,50);
	p0[0][1] = Point(100,150);
	p0[0][2] = Point(200,150);
	p0[0][3] = Point(200,100);
	p0[0][4] = Point(50,50);
	const Point *p[] = {p0[0]};
	int num[] = {5};
	fillPoly(Pic, p, num, 1, Scalar(255, 255, 255), 8);
	
	imshow("show", Pic);imwrite("final.jpg", Pic);
	waitKey();
}