使用vcpkg安装了OpenCV和OpenCV DNN，仍然出现链接错误

Question

我使用vcpkg为Windows 64位安装了opencv [dnn]。这是./vcpkg list返回的

jsoncpp:x64-windows                                1.9.1            jsoncpp is an implementation of a JSON reader an...
libjpeg-turbo:x64-windows                          2.0.3            libjpeg-turbo is a JPEG image codec that uses SI...
liblzma:x64-windows                                5.2.4-2          Compression library with an API similar to that ...
libpng:x64-windows                                 1.6.37-5         libpng is a library implementing an interface fo...
libwebp:x64-windows                                1.0.2-7          Lossy compression of digital photographic images.
opencv4:x64-windows                                4.1.1-3          computer vision library
opencv4[dnn]:x64-windows                                            Enable dnn module
opencv4[jpeg]:x64-windows                                           JPEG support for opencv
opencv4[opengl]:x64-windows                                         opengl support for opencv
opencv4[png]:x64-windows                                            PNG support for opencv
opencv4[tiff]:x64-windows                                           TIFF support for opencv
opencv4[webp]:x64-windows                                           WebP support for opencv
opengl:x64-windows                                 0.0-5            Open Graphics Library (OpenGL)[3][4][5] is a cro...
protobuf:x64-windows                               3.10.0           Protocol Buffers - Google's data interchange format
tiff:x64-windows                                   4.0.10-8         A library that supports the manipulation of TIFF...
zlib:x64-windows                                   1.2.11-5         A compression library

所以我认为它肯定存在，并且Visual Studio #include <opencv2\dnn.hpp>中的代码行不会引发任何错误，但是即使输入cv::dnn::Net net;，我仍然得到namespace cv::dnn has no member 'Net'的错误知道确实如此。

然后，在使用Visual Studio 2019进行编译时，我在其他文件（例如OpenCV随附的async.hpp）中遇到了很多错误，说 Error C3646 'CV_NOEXCEPT': unknown override specifier (compiling source file src\main.cpp) ...opencv2\core\async.hpp 34，并且在以下文件中得到了更多的编译错误： >

• dnn.hpp
• async.hpp
• dict.hpp
• version.hpp
• layer.hpp
• dnn.inl.hpp
• interface_engine.hpp

我相信这些都与所包含的dnn模块链接。

编辑：我也使用vcpkg安装了jsoncpp，它工作正常。

Answer 1

包括以下内容： #include“ opencv2 / dnn / dnn.hpp”