问题
I have configured OpenCV 3.1.0 in Eclipse Mars. These are my configuration,
G++ includes: D:/opencv/build/install/include; GCC includes: D:/opencv/build/install/include
Linker libraries: libopencv_core310, libopencv_highgui310
Linker libraries path: D:/opencv/build/lib (files in this directory are like libopencv_core310.dll.a)
I am getting an error like this,
imageRead.cpp:15: undefined reference to `cv::imread(cv::String const&, int)'
This is my imageRead.cpp file,
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
using namespace std;
using namespace cv;
int main(int argc, const char** argv) {
Mat img = imread("D:/sample.jpg", CV_LOAD_IMAGE_UNCHANGED);
if (img.empty()) {
cout << "Error: Image cannot be loaded." << endl;
system("pause");
return -1;
}
namedWindow("Image Window", CV_WINDOW_AUTOSIZE);
imshow("Image Window", img);
if (waitKey() == 27) {
return -1;
}
destroyWindow("Image Window");
return 0;
}
Can anyone help with this error ?
回答1:
Since OpenCV3, the imread function resides in the imgcodecs module. Imread should work once you add the opencv_imgcodecs
library to your project (note: imgcodecs, not imcodecs).
回答2:
I recommend to link the following libraries:
opencv_core
opencv_highgui
opencv_imgproc
opencv_imgcodecs
And in the .cpp file, you can include like this
#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
using namespace std;
using namespace cv;
Or
#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
来源:https://stackoverflow.com/questions/34497099/opencv-undefined-reference-to-imread