Opencv绘图操作

最新推荐文章于 2022-09-22 18:16:29 发布

long19960208

最新推荐文章于 2022-09-22 18:16:29 发布

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分类专栏： OpenCV 文章标签： opencv 绘图

本文链接：https://blog.youkuaiyun.com/long19960208/article/details/78014348

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程序运行结果：

程序代码：

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
using namespace cv;

#define WINDOW_NAME1 "【绘制图】"        //为窗口标题定义的宏 
#define WINDOW_WIDTH 600//定义窗口大小的宏

void DrawEllipse( Mat img, double angle );//绘制椭圆
void DrawFilledCircle( Mat img, Point center );//绘制圆

int main( void )
{

	// 创建空白的Mat图像
	Mat atomImage = Mat::zeros( WINDOW_WIDTH, WINDOW_WIDTH, CV_8UC3 );

	//先绘制出椭圆
	DrawEllipse( atomImage, 90 );
	DrawEllipse( atomImage, 0 );

	//再绘制圆心
	DrawFilledCircle( atomImage, Point( WINDOW_WIDTH/2, WINDOW_WIDTH/2) );

	imshow( WINDOW_NAME1, atomImage );
	moveWindow( WINDOW_NAME1, 0, 200 );

	waitKey( 0 );
	return(0);
}

void DrawEllipse( Mat img, double angle )
{
	int thickness = 2;
	int lineType = 8;

	ellipse( img,
		Point( WINDOW_WIDTH/2, WINDOW_WIDTH/2 ),
		Size( WINDOW_WIDTH/4, WINDOW_WIDTH/16 ),
		angle,
		0,
		360,
		Scalar( 255, 129, 0 ),
		thickness,
		lineType );
}

//自定义的绘制函数，实现了实心圆的绘制
void DrawFilledCircle( Mat img, Point center )
{
	int thickness = -1;
	int lineType = 8;

	circle( img,
		center,
		WINDOW_WIDTH/32,
		Scalar( 0, 0, 255 ),
		thickness,
		lineType );
}