安装opencv

安装opencv

参考： https://milq.github.io/install-opencv-ubuntu-debian/

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# INSTALL OPENCV ON UBUNTU OR DEBIAN #

######################################



# |          THIS SCRIPT IS TESTED CORRECTLY ON          |

# |------------------------------------------------------|

# | OS               | OpenCV       | Test | Last test   |

# |------------------|--------------|------|-------------|

# | Ubuntu 18.04 LTS | OpenCV 3.4.2 | OK   | 18 Jul 2018 |

# | Debian 9.5       | OpenCV 3.4.2 | OK   | 18 Jul 2018 |

# |----------------------------------------------------- |

# | Debian 9.0       | OpenCV 3.2.0 | OK   | 25 Jun 2017 |

# | Debian 8.8       | OpenCV 3.2.0 | OK   | 20 May 2017 |

# | Ubuntu 16.04 LTS | OpenCV 3.2.0 | OK   | 20 May 2017 |



# VERSION TO BE INSTALLED



OPENCV_VERSION='3.4.2'



# 1. KEEP UBUNTU OR DEBIAN UP TO DATE

sudo apt-get -y update

sudo apt-get -y upgrade

sudo apt-get -y dist-upgrade

sudo apt-get -y autoremove



# 2. INSTALL THE DEPENDENCIES

# Build tools:

sudo apt-get install -y build-essential cmake



# GUI (if you want to use GTK instead of Qt, replace 'qt5-default' with 'libgtkglext1-dev' and remove '-DWITH_QT=ON' option in CMake):

sudo apt-get install -y qt5-default libvtk6-dev



# Media I/O:

sudo apt-get install -y zlib1g-dev libjpeg-dev libwebp-dev libpng-dev libtiff5-dev libjasper-dev libopenexr-dev libgdal-dev



# Video I/O:

sudo apt-get install -y libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev yasm libopencore-amrnb-dev libopencore-amrwb-dev libv4l-dev libxine2-dev



# Parallelism and linear algebra libraries:

sudo apt-get install -y libtbb-dev libeigen3-dev



# Python:

sudo apt-get install -y python-dev python-tk python-numpy python3-dev python3-tk python3-numpy



# Java:

sudo apt-get install -y ant default-jdk



# Documentation:

sudo apt-get install -y doxygen



# 3. INSTALL THE LIBRARY

sudo apt-get install -y unzip wget

wget https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip

unzip ${OPENCV_VERSION}.zip

rm ${OPENCV_VERSION}.zip

mv opencv-${OPENCV_VERSION} OpenCV

cd OpenCV

mkdir build

cd build

cmake -DWITH_QT=ON -DWITH_OPENGL=ON -DFORCE_VTK=ON -DWITH_TBB=ON -DWITH_GDAL=ON -DWITH_XINE=ON -DBUILD_EXAMPLES=ON -DENABLE_PRECOMPILED_HEADERS=OFF ..

make -j4

sudo make install

sudo ldconfig



# 4. EXECUTE SOME OPENCV EXAMPLES AND COMPILE A DEMONSTRATION



# To complete this step, please visit 'http://milq.github.io/install-opencv-ubuntu-debian'.

sudo ldconfig

提示

/sbin/ldconfig.real: /usr/local/cuda/lib64/libcudnn.so.5 is not a symbolic link

解决： https://askubuntu.com/questions/1025928/why-do-i-get-sbin-ldconfig-real-usr-local-cuda-lib64-libcudnn-so-7-is-not-a

cd /usr/local/cuda/lib64/

ls -lha libcudnn*

sudo rm libcudnn.so

sudo rm libcudnn.so.5

sudo ln libcudnn.so.5.1.10 libcudnn.so.5

sudo ln libcudnn.so.5 libcudnn.so

cd ~/OpenCV/build/

sudo ldconfig

C++测试

cd ~/Opencv/build/bin

./example_cpp_edge ../../samples/data/fruits.jpg

Java测试：

cd ~/Opencv/samples/java/ant

ant -DocvJarDir=../../../build/bin -DocvLibDir=../../../build/lib

编译demo

Download the files  demo.cpp  and  CMakeLists.txt  and put them into folder ~/Opencv/samples/demo . 

cd ~/Opencv/samples/demo

mkdir build && cd build && cmake .. && make

./demo

python测试：

cd ~/Opencv/samples/python

python3 video.py

居然

ModuleNotFoundError: No module named 'cv2' 

装下面这个好了

pip install opencv-python

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