使用g++ opencv_demo.cpp -o test 会报以下错误
这是我的代码：
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#include <string>#include <iostream>#include <time.h>#include <opencv2/highgui/highgui.hpp>#include <opencv2/opencv.hpp>#include <opencv2/core.hpp>#include <opencv2/videoio/videoio.hpp>#include <opencv2/imgproc/imgproc_c.h>//#pragma comment(lib, "")using namespace std;using namespace cv;void Video_to_Image(Mat& frame);int main(){ //string filename = "Wildlife.wmv"; string filename = "rtsp://admin:abc.1234@10.12.18.131:554"; Mat frame; VideoCapture cap; cap.open(filename); if (!cap.isOpened()) { cerr << "ERROR! Unable to open camera\n"; return -1; } //--- GRAB AND WRITE LOOP cout << "Start grabbing" << endl << "Press any key to terminate" << endl; time_t start_time = time(NULL); for (;;) { // wait for a new frame from camera and store it into 'frame' cap.read(frame); // check if we succeeded if (frame.empty()) { cerr << "ERROR! blank frame grabbed\n"; break; } // show live and wait for a key with timeout long enough to show images imshow("Live", frame); // 每隔2s保存图片 time_t end_time = time(NULL); if ((end_time - start_time) >=2) { cout << "2s capture" << endl; Video_to_Image(frame); start_time = time(NULL); } if (waitKey(5) >= 0) break; } cap.release(); return 0;}void Video_to_Image(Mat& frame){ char image_name[PATH_MAX]; sprintf(image_name, "%s%s", "test_image", ".jpg"); imwrite(image_name, frame);} |
解决方案：
g++ `pkg-config opencv --cflags` opencv_demo.cpp -o test `pkg-config opencv --libs`
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原文链接：https://www.cnblogs.com/wal1317-59/p/13440908.html
