opencv - 如何设置包含路径#include “opencv2/opencv.hpp”

Question

我正在尝试在此页面中使用OpenCV进行编译部分:Installing Darknet

完成OPENCV = 1后，我尝试进行重新制作，因此我在darknet目录中进行了make。

目录在下面。

(yolo) bash-3.2$ pwd
/Users/moray/darknet
(yolo) bash-3.2$ ls
LICENSE     LICENSE.gpl LICENSE.v1  backup      data        libdarknet.a    python      src
LICENSE.fuck    LICENSE.meta    Makefile    cfg     examples    libdarknet.so   results
LICENSE.gen LICENSE.mit README.md   darknet     include     obj     scripts

重新制作的结果就在这里。

(yolo) bash-3.2$ make
g++ -Iinclude/ -Isrc/ -DOPENCV `pkg-config --cflags opencv`  -Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -DOPENCV -c ./src/image_opencv.cpp -o obj/image_opencv.o
/bin/sh: pkg-config: command not found
./src/image_opencv.cpp:6:10: fatal error: 'opencv2/opencv.hpp' file not found
#include "opencv2/opencv.hpp"
         ^~~~~~~~~~~~~~~~~~~~
1 error generated.
make: *** [obj/image_opencv.o] Error 1

所以我以为include路径不能引用 opencv.hpp，所以我寻找了文件并找到了它。

(yolo) bash-3.2$ ls ~/opt/anaconda3/pkgs/libopencv-3.4.2-h7c891bd_1/include/opencv2/opencv.hpp
/Users/moray/opt/anaconda3/pkgs/libopencv-3.4.2-h7c891bd_1/include/opencv2/opencv.hpp

因此，我尝试将 #include "opencv2/opencv.hpp"中的 "include "~/opt/anaconda3/pkgs/libopencv-3.4.2-h7c891bd_1/include/opencv2/opencv.hpp"更改为 ./src/image_opencv.cpp
结果就在这里。

(yolo) bash-3.2$ make
g++ -Iinclude/ -Isrc/ -DOPENCV `pkg-config --cflags opencv`  -Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC -Ofast -DOPENCV -c ./src/image_opencv.cpp -o obj/image_opencv.o
/bin/sh: pkg-config: command not found
./src/image_opencv.cpp:7:10: fatal error: 
      '~/opt/anaconda3/pkgs/libopencv-3.4.2-h7c891bd_1/include/opencv2/opencv.hpp' file not found
#include "~/opt/anaconda3/pkgs/libopencv-3.4.2-h7c891bd_1/include/opencv2/opencv.hpp"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make: *** [obj/image_opencv.o] Error 1

我不明白为什么会发生错误。
请告诉我您的想法。

===========================================

操作系统:macOS Catalina 10.15.1

(yolo)是anaconda中的虚拟环境(3)

opencv是通过(yolo)中的pip命令安装的

(yolo)中通过pip命令的所有软件包:

(yolo) bash-3.2$ pip list
Package               Version            
--------------------- -------------------
certifi               2019.11.28         
numpy                 1.17.4             
opencv-contrib-python 4.1.2.30           
opencv-python         4.1.1.26           
pip                   19.3.1             
setuptools            42.0.2.post20191203
wheel                 0.33.6 

gcc:

(yolo) bash-3.2$ gcc --version
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.0 (clang-1100.0.33.12)
Target: x86_64-apple-darwin19.0.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

Answer 1

此错误将其解释为pkg-config: command not found。为了在YOLO中使用OpenCV，您必须安装适用于 C或C++ 程序(而非Python)的OpenCV。您可能使用pip for Python安装了opencv。请按照以下任一链接中的步骤安装opencv:this或this或其他教程。

之后，要检查您是否正确安装了OpenCV并可以在C程序中使用，请运行以下命令:

pkg-config --modversion opencv

如果没有显示任何内容或显示错误的版本，请尝试重新安装OpenCV 或，这可能是您的计算机未正确找到opencv版本。
因此，将命令添加到 ~/.bashrc中，例如:

vim ~/.bashrc
export PKG_CONFIG_PATH=/home/user/installation/OpenCV-3.4.0/lib/pkgconfig
source ~/.bashrc

注意:根据包含 opencv.pc的opencv安装目录更改路径