C++ opencv小練習繪製點，直線，圓，橢圓等基本圖像

#include "opencv2/highgui/highgui.hpp" #include "opencv2/imgproc/imgproc.hpp" #include <iostream> #include <stdio.h> using namespace std; using namespace cv; int main() { // 設置窗口 Mat img = Mat::ze

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