img1 = cv.imread('./test.jpg', 1) #加载图像,包括alpha通道 img2 = cv.imread('./test.jpg', -1) cv.namedWindow('Grayimage',cv.WINDOW_NORMAL) #指定窗口可调整大小 cv.imshow('Grayimage', img0) cv.imshow('Colorimage', img1) cv.imshow('Alpimage', img2) plt.imshow(img0, cmap =...
0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:/WORK/opencvproj/helloworld.cpp:10: undefined reference to `cv::imshow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)' [build] D:/keypro/mingw64posix/bin/....
undefined reference to `cv::imshow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)' /usr/local/bin/ld: CMakeFiles/darknet.dir/src/image_opencv.cpp.o: in function `make_window_cv': /home/user/darknet/src/image_ope...
undefined reference to `cv::imwrite(std::string const&, cv::_InputArray const&, std::vector<int, std::allocator<int> > const&)' undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)' undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)' ...
undefined reference tocv::imshow(cv::String const&, cv::_InputArray const&) 如果编译 opencv 之后只出现这个错误,而其他部分的 opencv 的 API 可以用,则可能是编译的 时候CMAKE_BUILD_TYPE 选择成了 Realase/RelWithDebInfo。imshow()以及部分 API 可 ...
undefined reference to `cv::imwrite(std::string const&, cv::_InputArray const&, std::vector<int, std::allocator<int> > const&)' undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)' undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)' ...
}imshow("Display window", img);intk =waitKey(0);// Wait for a keystroke in the windowif(k =='s') {imwrite("starry_night.png", img); }return0; } Trying to compile with: $/usr/bin/g++ -gpkg-config --cflags --libs opencvmain.cpp causes 'undefined reference' error for all O...
cv::imshow("Output", image); MainWindow w; w.show(); return a.exec(); } Error info: debug/main.o: in function qMain(int, char ** )': undefined reference to `cv::imread(std::__cxx11::basic_string <char, std::char_traits<char>, std::allocator<char> > const&, int)' ...
int,int,int)'seg_label_generator.cpp:(.text+0x2a82):undefined reference to `cv::line(cv::_InputOutputArrayconst&,cv::Point_,cv::Point_,cv::Scalar_const&,int,int,int)'seg_label_generator.cpp:(.text+0x2bc0):undefined reference to `cv::imshow(cv::Stringconst&,cv::_InputArrayconst&)...