我已经在Eclipse Mars中配置了OpenCV 3.1.0。这些是我的配置,
G++包含:D:/opencv/build/install/includeGCC包括:D:/opencv/build/install/include
链接器库:libopencv_core310、libopencv_highgui310
链接库路径:D:/opencv/build/lib(此目录中的文件类似于libopencv_core310.dll.a)
我收到这样的错误,
imageRead.cpp:15: undefined reference to `cv::imread(cv::String const&, int)'
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;
}
有人能帮我解决这个错误吗?
由于OpenCV3,imread函数驻留在imgcodecs模块中。一旦您将opencv_imgcodecs
库添加到项目中,Imread就会工作(注意:imgcodecs,而不是imcodecs)。
我建议链接以下库:
opencv_core
opencv_highgui
opencv_imgproc
opencv_imgcodecs
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;
或
#include <iostream>
#include <opencv2/opencv.hpp>
using namespace std;
using namespace cv;
此函数位于opencv_imgcodecs
库中。值得一提的是,为了成功链接,您可能需要将对象文件放在库之前:
g++ -c -I/usr/include/opencv4/opencv -I/usr/include/opencv4 main.cpp
g++ main.o -lopencv_imgcodecs $(OTHER_FLAGS) -o main