在图像上绘制几何图形
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
#include<iostream>
#include<opencv2/opencv.hpp>
using namespace cv;
Mat src1, dst;
void drawRectangle();
void drawLine();
void drawEllipse();
void drawCircle();
void tsxt();
int main()
{
src1 = imread("E:/image/image/daibola.jpg");
dst = src1.clone();
if(src1.empty())
{
printf("can not load image \n");
return -1;
}
drawRectangle();
drawLine();
drawEllipse();
drawCircle();
tsxt();
cvNamedWindow("output", CV_WINDOW_AUTOSIZE);
imshow("output", dst);
waitKey();
return 0;
}
void drawRectangle()
{
Rect rect = Rect(150,30,250,250);
Scalar color = Scalar(0,255,255);
rectangle(dst,rect,Scalar(0,255,255),2);
}
void drawLine()
{
line(dst, Point(450,0),Point(450,150),Scalar(255,0,50),2);
}
void drawEllipse()
{
ellipse(dst,Point(100,100),Size(50,90),0.0,0.0,360,Scalar(255,255,0),2);
}
void drawCircle()
{
circle(dst,Point(100,100),60,Scalar(255,0,255),2);
}
void tsxt()
{
putText(dst, "Image",Point(300,330),5,3.0,Scalar(255,0,90),2);
}
|
随机绘制大小不等的圆：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
#include<opencv2/opencv.hpp>
using namespace cv;
Mat dst, src1;
void randomCircle();
int main()
{
src1 = imread("E:/image/image/daibola.jpg");
dst = Mat::zeros(src1.size(),src1.type());
randomCircle();
return 0;
}
void randomCircle()
{
RNG rng(0);
Point p1;
int r;
for(int i =0; i < 10000; i++)
{
p1.x = rng.uniform(0, dst.cols);
p1.y = rng.uniform(0, dst.rows);
r = rng.uniform(0, dst.rows/3);
Scalar color = Scalar(rng.uniform(0,255), rng.uniform(0, 255), rng.uniform(0, 255));
if(waitKey(100) > 0)
{
break;
}
circle(dst,p1,r,color,2);
imshow("circle", dst);
}
}
|
以上这篇opencv3/C++绘制几何图形实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/akadiao/article/details/78837419