OpenCV入坑備忘4——簡單繪圖2

上一篇OpenCV入坑備忘3——簡單繪圖

1、畫多邊形

#include<iostream>
#include<opencv2/opencv.hpp>
#define w 400

using namespace cv;

/// Function headers
void MyEllipse(Mat img, double angle);
void MyFilledCircle(Mat img, Point center);
void MyPolygon(Mat img);


VideoCapture VCap;//視頻容器

int main(void) {

	int NumP = 0;

	/// Create black empty images
	Mat image;
	//= Mat::zeros(w, w, CV_8UC3);//生成一個400x400的矩陣，每個像素點佔8bit,無符號整型，4通道圖像
	VCap.open(0);
	if (!VCap.isOpened())//判斷是否初始化/讀取成功。與.open相關聯（先後順序）
		return -1;//如是，關閉程序

	Point rook_points[1][20];//創建座標二維數組
	rook_points[0][0] = Point(w / 4, 7 * w / 8);
	rook_points[0][1] = Point(3 * w / 4, 7 * w / 8);
	rook_points[0][2] = Point(3 * w / 4, 13 * w / 16);
	rook_points[0][3] = Point(11 * w / 16, 13 * w / 16);
	rook_points[0][4] = Point(19 * w / 32, 3 * w / 8);
	rook_points[0][5] = Point(3 * w / 4, 3 * w / 8);
	rook_points[0][6] = Point(3 * w / 4, w / 8);
	rook_points[0][7] = Point(26 * w / 40, w / 8);
	rook_points[0][8] = Point(26 * w / 40, w / 4);
	rook_points[0][9] = Point(22 * w / 40, w / 4);
	rook_points[0][10] = Point(22 * w / 40, w / 8);
	rook_points[0][11] = Point(18 * w / 40, w / 8);
	rook_points[0][12] = Point(18 * w / 40, w / 4);
	rook_points[0][13] = Point(14 * w / 40, w / 4);
	rook_points[0][14] = Point(14 * w / 40, w / 8);
	rook_points[0][15] = Point(w / 4, w / 8);
	rook_points[0][16] = Point(w / 4, 3 * w / 8);
	rook_points[0][17] = Point(13 * w / 32, 3 * w / 8);
	rook_points[0][18] = Point(5 * w / 16, 13 * w / 16);
	rook_points[0][19] = Point(w / 4, 13 * w / 16);

	const Point* ppt[1] = { rook_points[0] };
	int npt[] = { 20 };//座標點數總數量
	while (1)
	{
		VCap.read(image);
		polylines(
			image,
			ppt,
			npt,
			1,
			1,
			Scalar(0, 0, 0),
			8
		);
		if (NumP >= 500)NumP = 0;
		imshow("畫多邊形", image);
		waitKey(33);
	}
	waitKey(90000);
	return(0);
}

2、填充多邊形

#include<iostream>
#include<opencv2/opencv.hpp>
#define w 400

using namespace cv;

/// Function headers
void MyEllipse(Mat img, double angle);
void MyFilledCircle(Mat img, Point center);
void MyPolygon(Mat img);


VideoCapture VCap;//視頻容器

int main(void) {

	int NumP = 0;

	/// Create black empty images
	Mat image;
	//= Mat::zeros(w, w, CV_8UC3);//生成一個400x400的矩陣，每個像素點佔8bit,無符號整型，4通道圖像
	VCap.open(0);
	if (!VCap.isOpened())//判斷是否初始化/讀取成功。與.open相關聯（先後順序）
		return -1;//如是，關閉程序

	Point rook_points[1][20];
	rook_points[0][0] = Point(w / 4, 7 * w / 8);
	rook_points[0][1] = Point(3 * w / 4, 7 * w / 8);
	rook_points[0][2] = Point(3 * w / 4, 13 * w / 16);
	rook_points[0][3] = Point(11 * w / 16, 13 * w / 16);
	rook_points[0][4] = Point(19 * w / 32, 3 * w / 8);
	rook_points[0][5] = Point(3 * w / 4, 3 * w / 8);
	rook_points[0][6] = Point(3 * w / 4, w / 8);
	rook_points[0][7] = Point(26 * w / 40, w / 8);
	rook_points[0][8] = Point(26 * w / 40, w / 4);
	rook_points[0][9] = Point(22 * w / 40, w / 4);
	rook_points[0][10] = Point(22 * w / 40, w / 8);
	rook_points[0][11] = Point(18 * w / 40, w / 8);
	rook_points[0][12] = Point(18 * w / 40, w / 4);
	rook_points[0][13] = Point(14 * w / 40, w / 4);
	rook_points[0][14] = Point(14 * w / 40, w / 8);
	rook_points[0][15] = Point(w / 4, w / 8);
	rook_points[0][16] = Point(w / 4, 3 * w / 8);
	rook_points[0][17] = Point(13 * w / 32, 3 * w / 8);
	rook_points[0][18] = Point(5 * w / 16, 13 * w / 16);
	rook_points[0][19] = Point(w / 4, 13 * w / 16);

	const Point* ppt[1] = { rook_points[0] };
	int npt[] = { 20 };

	while (1)
	{
		VCap.read(image);
		fillPoly(image,
			ppt,
			npt,
			1,
			Scalar(255, 100, 50),
			8);

		if (NumP >= 500)NumP = 0;
		imshow("填充多邊形", image);
		waitKey(33);
	}


	waitKey(90000);
	return(0);
}

3、繪製文字

#include<iostream>
#include<opencv2/opencv.hpp>
#define w 400

using namespace cv;

/// Function headers
void MyEllipse(Mat img, double angle);
void MyFilledCircle(Mat img, Point center);
void MyPolygon(Mat img);


VideoCapture VCap;//視頻容器

int main(void) {

	int NumP = 0;

	/// Create black empty images
	Mat image;
	//= Mat::zeros(w, w, CV_8UC3);//生成一個400x400的矩陣，每個像素點佔8bit,無符號整型，4通道圖像
	VCap.open(0);
	if (!VCap.isOpened())//判斷是否初始化/讀取成功。與.open相關聯（先後順序）
		return -1;//如是，關閉程序

	Point rook_points[1][20];
	rook_points[0][0] = Point(w / 4, 7 * w / 8);
	rook_points[0][1] = Point(3 * w / 4, 7 * w / 8);
	rook_points[0][2] = Point(3 * w / 4, 13 * w / 16);
	rook_points[0][3] = Point(11 * w / 16, 13 * w / 16);
	rook_points[0][4] = Point(19 * w / 32, 3 * w / 8);
	rook_points[0][5] = Point(3 * w / 4, 3 * w / 8);
	rook_points[0][6] = Point(3 * w / 4, w / 8);
	rook_points[0][7] = Point(26 * w / 40, w / 8);
	rook_points[0][8] = Point(26 * w / 40, w / 4);
	rook_points[0][9] = Point(22 * w / 40, w / 4);
	rook_points[0][10] = Point(22 * w / 40, w / 8);
	rook_points[0][11] = Point(18 * w / 40, w / 8);
	rook_points[0][12] = Point(18 * w / 40, w / 4);
	rook_points[0][13] = Point(14 * w / 40, w / 4);
	rook_points[0][14] = Point(14 * w / 40, w / 8);
	rook_points[0][15] = Point(w / 4, w / 8);
	rook_points[0][16] = Point(w / 4, 3 * w / 8);
	rook_points[0][17] = Point(13 * w / 32, 3 * w / 8);
	rook_points[0][18] = Point(5 * w / 16, 13 * w / 16);
	rook_points[0][19] = Point(w / 4, 13 * w / 16);

	const Point* ppt[1] = { rook_points[0] };
	int npt[] = { 20 };

	while (1)
	{
		VCap.read(image);
		fillPoly(image,
			ppt,
			npt,
			1,
			Scalar(255, 100, 50),
			8);

		putText(image,//繪製文字
			"King",
			Point(80, 30),
			FONT_HERSHEY_SCRIPT_COMPLEX,//字型（見上表）
			1,
			Scalar(0, 0, 0),
			1,
			8
			);

		if (NumP >= 500)NumP = 0;
		imshow("繪製文字", image);
		waitKey(33);
	}


	waitKey(90000);
	return(0);
}

3.1、顯示數據

	char FPS[10] = {'F','P','S',':'};
	char ac=0;
	while (1)
	{
		VCap.set(CV_CAP_PROP_BRIGHTNESS,1);//亮度 1
		VCap.set(CV_CAP_PROP_SATURATION, 50);//飽和度 50
		ac++;
		if (ac >=99)
		{
			ac = 0;
		}
		FPS[4] = ac / 10 + 48;
		FPS[5] = ac % 10 + 48;


		VCap.read(image);
		putText(image,
			FPS,//需要顯示的數據
			Point(80, 30),
			FONT_HERSHEY_SIMPLEX,
			1,
			Scalar(0, 0, 0),
			1,
			8
			);

		if (NumP >= 500)NumP = 0;
		imshow("顯示數據", image);
		waitKey(30);