void circle(CV_IN_OUT Mat& img, Point center, int radius, const Scalar& color, int thickness=1, int lineType=8, int shift=0); img为图像,单通道多通道都行,不需要特殊要求 center为画圆的圆心坐标 radius为圆的半径 color为设定圆的颜色,比如用CV_RGB(255, 0,0)设置为红色, CV_RGB(255, 255,255)设置为白色,CV_RG…
''' 本次来学习基于opencv进行各种画图操作,以前只习惯用matplotlib,最近开始用opencv,觉得也很好用. cv.line(), cv.circle() , cv.rectangle(), cv.ellipse(), cv.putText() In all the above functions, you will see some common arguments as given below: img : The image where you want to draw t…
代码示例一: #include<opencv2/opencv.hpp> using namespace cv; int main(){ Mat src = imread(); imshow("原始图", src); //进行Harris角点检测找出角点 Mat cornerStrength; cornerHarris(src, cornerStrength, , , 0.01); //对灰度图进行阈值操作,得到二值图并显示 Mat harrisCorner; thresho…