C++ OpenCV：对 imread() 的未定义引用
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OpenCV : undefined reference to imread()
提问by Shinchan
I have configured OpenCV 3.1.0 in Eclipse Mars. These are my configuration,
我已经在 Eclipse Mars 中配置了 OpenCV 3.1.0。这些是我的配置，
G++ includes: D:/opencv/build/install/include; GCC includes: D:/opencv/build/install/include
G++ 包括：D:/opencv/build/install/include；GCC 包括：D:/opencv/build/install/include
Linker libraries: libopencv_core310, libopencv_highgui310
链接器库：libopencv_core310、libopencv_highgui310
Linker libraries path: D:/opencv/build/lib (files in this directory are like libopencv_core310.dll.a)
链接库路径：D:/opencv/build/lib（该目录下的文件类似于libopencv_core310.dll.a）
I am getting an error like this,
我收到这样的错误，
imageRead.cpp:15: undefined reference to `cv::imread(cv::String const&, int)'
This is my imageRead.cpp file,
这是我的 imageRead.cpp 文件，
#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 ?
任何人都可以帮助解决这个错误吗？
回答by Morris Franken
Since OpenCV3, the imread function resides in the imgcodecs module. Imread should work once you add the opencv_imgcodecslibrary to your project (note: imgcodecs, not imcodecs).
从 OpenCV3 开始， imread 函数驻留在 imgcodecs 模块中。一旦将opencv_imgcodecs库添加到项目中，Imread 应该可以工作（注意：imgcodecs，而不是 imcodecs）。
回答by Oscar Zhou1989
I recommend to link the following libraries:
我建议链接以下库：
opencv_core
opencv_highgui
opencv_imgproc
opencv_imgcodecs
And in the .cpp file, you can include like this
在 .cpp 文件中，您可以像这样包含
#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
using namespace std;
using namespace cv;
Or
或者
#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
