C++和OpenCV库实现的一个图像处理示例程序

#include <iostream> #include <string> #include <sstream> using namespace std; #include <opencv2/core.hpp> #include <opencv2/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> using namespace cv; //creat a variable to save the postion value in track int bluramount = 15; //trackbar call back function static void onChange(int pos, void* userInput); //mouse call back function static void onMouse(int event, int x, int y, int flags, void* userinput); int main(int argc, const char** argv) { //read image Mat lena = imread("../QQhead.png"); //creat a window namedWindow("lena"); //creat a trackbar createTrackbar("lena", "lena", &bluramount, 30, onChange, &lena); setMouseCallback("lena", onMouse, &lena); //call onchange to init onChange(bluramount, &lena); //wait app for a key to exit waitKey(0); //destroy windows destroyAllWindows(); return 0; } static void onChange(int pos, void* userInput) { if (pos < 1) return; Mat imgblur; Mat* img = (Mat*)userInput; blur(*img, imgblur, Size(pos, pos)); imshow("lena", imgblur); } static void onMouse(int event, int x, int y, int flags, void* userinput) { if (event != EVENT_LBUTTONDOWN) { return; } Mat* img = (Mat*)userinput; circle(*img, Point(x, y), 20, Scalar(0, 0, 255), 3, 10, 0); onChange(bluramount, img); cout << flags << endl; }