OpenCV computer vision (six) to draw graphics

Graphics rendering code that is commonly used as follows:

 

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

using namespace std;
using namespace cv;

int main(int argc, char** argv) {
Mat image = imread("D:/OpenCVprj/image/test3.jpg");
namedWindow("image", CV_WINDOW_AUTOSIZE);
//line
Point p1;
p1.x = image.cols;
p1.y = image.rows;
Point p2 = Point(0, 0);
Scalar color = Scalar(0, 0, 255);
line(image, p1, p2, color, 1, LINE_8);

//rectangle
Scalar color1 = Scalar(0, 255, 0);
Rect rect = Rect(image.cols / 4, image.rows / 4, 2*image.cols / 4, 2*image.rows/4);
rectangle(image, rect, color1, 3, LINE_8);

//ellipse 椭圆
Scalar color2 = Scalar(255, 0, 0);
// 90, represents the rotation 90 °, 0,360, represented Videos arc size, line thickness 1 represents 
ellipse (image, Point (image.cols / 2, image.rows / 2), Size (image.cols / 4, image.rows /. 8), 90, 0, 360, color2 for,. 1, LINE_8); 

// Circle 
the Scalar color3 the Scalar = (255, 255, 0); 
Circle (Image, Point (image.cols / 2, image.rows / 2), 200 is, color3,. 5, LINE_8); 

// fillpoly 
Point PTS [. 1] [. 5]; 
PTS [0] [0] = Point (100, 100); 
PTS [0] [. 1] = Point ( 100, 200 is); 
PTS [0] [2] = Point (200 is, 200 is); 
PTS [0] [. 3] = Point (200 is, 100); 
PTS [0] [. 4] = Point (100, 100); 
const Point * PPTS [] = {PTS [0]}; 
int NPT [] = {. 5}; 

the Scalar Color4 = the Scalar (255, 0, 255); 
fillPoly (Image, PPTS, NPT,. 1, Color4, LINE_8); 

text // 
the Scalar color5 the Scalar = (0, 255, 0);
putText(image, "Hello OpenCV", Point(100, image.rows/2), CV_FONT_HERSHEY_COMPLEX, 2, color5);

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