是的，但是要安装它，您需要

多亏了Satya Mallik和Opencv.org，他们编写了定制的bash脚本，无需任何hasel即可安装OpenCV。我们将在这个博客中添加更多内容。

>> wget https://raw.githubusercontent.com/spmallick/learnopencv/master/InstallScripts/installOpenCV-4-on-Ubuntu-18-04.sh

坐好，放松就行了。请查看日志，以防出现任何错误。

好了！您已成功安装OpenCV。

可选：

您可以自定义OpenCV安装。

2.CUDA/无CUDA安装：您可以在OpenCV中找到需要的有用参数，以便根据您的需求进行更好、更优化的编译。在这里找到名单。OpenCV CMakeList和文档。Opencv CMakeList Documentation

对于CUDA支持：

cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX= $cwd/installation/OpenCV-"$cvVersion"  \
-D WITH_TBB=ON \
-D ENABLE_FAST_MATH=1 \
-D CUDA_FAST_MATH=1 \
-D WITH_CUBLAS=1 \
-D WITH_CUDA=ON \
-D BUILD_opencv_cudacodec=OFF \
-D WITH_CUDNN=ON \
-D OPENCV_DNN_CUDA=ON \
-D CUDA_ARCH_BIN=7.5 \
-D WITH_V4L=ON \
-D WITH_QT=OFF \
-D WITH_OPENGL=ON \
-D WITH_GSTREAMER=ON \
-D OPENCV_GENERATE_PKGCONFIG=ON \
-D OPENCV_PC_FILE_NAME=opencv.pc \
-D OPENCV_ENABLE_NONFREE=ON \
-D OPENCV_PYTHON3_INSTALL_PATH= $cwd/OpenCV-$cvVersion-py3/lib/python3.6/site-packages  \
-D PYTHON_EXECUTABLE=~/.virtualenvs/cv/bin/python \
-D OPENCV_EXTRA_MODULES_PATH= ../../opencv_contrib/modules  \
-D INSTALL_PYTHON_EXAMPLES=OFF \
-D INSTALL_C_EXAMPLES=OFF \
-D BUILD_EXAMPLES=OFF ..

对于非CUDA支持：

cmake -D CMAKE_BUILD_TYPE=RELEASE \
            -D CMAKE_INSTALL_PREFIX=$cwd/installation/OpenCV-"$cvVersion" \
            -D INSTALL_C_EXAMPLES=ON \
            -D INSTALL_PYTHON_EXAMPLES=ON \
            -D WITH_TBB=ON \
            -D WITH_V4L=ON \
            -D OPENCV_PYTHON3_INSTALL_PATH=$cwd/OpenCV-$cvVersion-py3/lib/python3.6/site-packages \
        -D WITH_QT=ON \
        -D WITH_OPENGL=ON \
        -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
        -D BUILD_EXAMPLES=ON ..

示例：

现在，让我们来谈谈如何与项目集成。了解这一点非常重要。我发现在OpenCV版本管理中很难获得任何有用的资源。

cmake_minimum_required(VERSION 3.1)

project( DisplayImage )

# Enable C++11
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)

# For OpenCV 4
SET(OpenCV_DIR /OpenCV-master/lib/cmake/opencv4)


# For OpenCV 3
# SET(OpenCV_DIR "/opencv3.4.8/installation/OpenCV-3.4.8/share/OpenCV/")


# If the package has been found, several variables will
# be set, you can find the full list with descriptions
# in the OpenCVConfig.cmake file.
# Print some message showing some of them
message(STATUS "OpenCV library status:")
message(STATUS "    version: ${OpenCV_VERSION}")
message(STATUS "    libraries: ${OpenCV_LIBS}")
message(STATUS "    include path: ${OpenCV_INCLUDE_DIRS}")


find_package( OpenCV REQUIRED )
include_directories( ${OpenCV_INCLUDE_DIRS} )
add_executable( DisplayImage main.cpp )
target_link_libraries( DisplayImage ${OpenCV_LIBS} )

尝试编译并验证安装过程。

# runall.sh script
cmake -S . -B out/build;
cd out/build;
make;
./example 

在此处查找我的回购：https://github.com/sauravsolanki/opencv-installationhttps://github.com/sauravsolanki/opencv-installation

参考文献：