opencv棋盘格检测
老王隔壁的秃头大宝贝 人气:0代码:
#include <iostream> #include <vector> #include <opencv2/opencv.hpp> #include <opencv2/xfeatures2d.hpp> #include <opencv2/optflow/motempl.hpp> using namespace cv; using namespace std; /* 棋盘格角点检测应用 */ int main() { //*********************************** 1 **************************************************************** /*Mat img = imread("C:\\Users\\H\\Desktop\\13.png", IMREAD_GRAYSCALE); vector<Point2f> corner; bool result = findChessboardCorners(img, Size(5, 7), corner, CALIB_CB_ADAPTIVE_THRESH | CALIB_CB_NORMALIZE_IMAGE); cornerSubPix(img, corner, Size(11, 11), Size(-1, -1), TermCriteria(TermCriteria::EPS | TermCriteria::MAX_ITER, 20, 0.03)); drawChessboardCorners(img, Size(5, 7), corner, result); imshow("src", img);*/ //********************************************************************************************************** // ********************************** 2 ************************************************** //读入图像 Mat src = imread("C:\\Users\\H\\Desktop\\13.png", IMREAD_COLOR); Mat image_gray; cvtColor(src, image_gray, COLOR_BGR2GRAY); //定义存储角点的容器 vector<Point2f> corners; //进行角点检测 bool ret = findChessboardCorners(image_gray, Size(5, 7), // 棋盘格每列点数和每一行点数 corners, // 输出检测到角点的数组 CALIB_CB_ADAPTIVE_THRESH | CALIB_CB_NORMALIZE_IMAGE); //指定亚像素计算迭代标注 TermCriteria criteria = TermCriteria(TermCriteria::MAX_ITER + TermCriteria::EPS, 40, // 要计算的最大迭代次数或元素数 0.1); // 迭代算法停止时所需的精度或参数变化 //亚像素检测 cornerSubPix(image_gray, corners, Size(5, 5), //搜索窗口大小 Size(-1, -1), criteria); //角点绘制 drawChessboardCorners(src, Size(5, 7), //棋盘格每列点数和每一行点数 corners, ret); cout << "corner: " << corners << endl; //在原图中绘制点 Point pt; pt.x = corners[9].x; pt.y = corners[9].y; circle(src, pt, 4, Scalar(0, 255, 0),-1); imshow("chessboard corners", src); // **************************************************************************************** waitKey(0); return 0; }
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