OpenCV 설치 OpenCV Install

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Ubuntu 20.04

OpenCV version : 4.6.0 or 4.5.5

 

 

0. 기존 설치한 opencv 삭제

https://doongdoongeee.tistory.com/107

Ubuntu에서 기존 설치된 OpenCV 삭제 및 재설치

sudo find /usr/local/ -name "*opencv*" -exec rm {} \;
sudo apt autoremove -y

 

 

1. 웹사이트에서 다운로드 또는 wget 명령어로 다운로드

wget -O opencv-4.6.0.zip https://github.com/opencv/opencv/archive/4.6.0.zip
wget -O opencv_contrib-4.6.0.zip https://github.com/opencv/opencv_contrib/archive/4.6.0.zip

또는

wget -O opencv.zip https://github.com/opencv/opencv/archive/4.5.5.zip
wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.5.5.zip

 

https://ghostweb.tistory.com/823

Unbuntu에 OpenCV 설치하기, 설치 버전 확인하기 (Ubuntu, Linux)

https://opencv.org/releases/

Releases - OpenCV

Sources 선택

 

2. Dependency 설치

sudo apt update
sudo apt-get install build-essential

sudo apt-get install -y libjpeg-dev libtiff5-dev libpng-dev \
libgtk2.0-dev libvtk6-dev libopenexr-dev libtbb-dev \
libavcodec-dev libavformat-dev libswscale-dev \
libxvidcore-dev libx264-dev libxine2-dev \
libv4l-dev v4l-utils \
libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
mesa-utils libgl1-mesa-dri \
libgtkgl2.0-dev libgtkglext1-dev \
libatlas-base-dev gfortran libeigen3-dev \
libgtk-3-dev python3-dev python3-numpy

 

 

3. 다운로드받은 압축 파일 압축 해제 후 빌드

 

- RTX 4090 그래픽카드를 사용한다고 가정

- 만약 다른 그래픽카드 / Jetson 보드를 사용할 경우,

CUDA_ARCH_BIN 값을 해당 장비에 맞춰 수정해야함

mkdir build && cd build

# For RTX 4090
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D WITH_TBB=OFF -D WITH_IPP=OFF -D WITH_1394=OFF \
-D BUILD_WITH_DEBUG_INFO=OFF \
-D BUILD_DOCS=OFF -D BUILD_EXAMPLES=OFF \
-D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF \
-D WITH_CUDA=ON -D WITH_CUDNN=ON \
-D OPENCV_DNN_CUDA=ON \
-D CUDA_FAST_MATH=ON -D CUDA_ARCH_BIN=8.9 \
-D WITH_CUBLAS=ON -D WITH_CUFFT=ON \
-D WITH_QT=ON -D WITH_GTK=OFF \
-D WITH_OPENGL=ON -D WITH_V4L=ON \
-D WITH_FFMPEG=ON -D WITH_XINE=ON \
-D BUILD_NEW_PYTHON_SUPPORT=ON \
-D BUILD_opencv_python3=ON \
-D INSTALL_C_EXAMPLES=OFF -D INSTALL_PYTHON_EXAMPLES=ON \
-D OPENCV_GENERATE_PKGCONFIG=ON \
-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-4.6.0/modules \
-D OPENCV_PYTHON3_INSTALL_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")  \
-D PYTHON3_EXECUTABLE=/usr/bin/python3 \
-D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
-D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
-D OPENCV_ENABLE_NONFREE=ON -D BUILD_EXAMPLES=OFF ..

make
sudo make install
sudo ldconfig

 

(참고)

CUDA

https://darkpgmr.tistory.com/184

OpenCV + CUDA 직접 빌드하기 (Windows/Linux 종합)

파이썬

-D OPENCV_PYTHON3_INSTALL_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \

https://stackoverflow.com/questions/70334087/how-to-build-opencv-from-source-with-python-binding

How to build OpenCV from source with python binding?

 

 

 

(확인)

pkg-config --modversion opencv4

 

 

 

(아래는 하지말아야함)

4. OpenCV python 설치

 

pip install opencv-python opencv-contrib-python

 

 

https://ricespoon.tistory.com/17

 

 

(확인)

import cv2
print(cv2.cuda.getCudaEnabledDeviceCount())

 

 

https://ellun.tistory.com/333

딥러닝을 위한 cuda 지원 opencv 설치 및 활용 방법 (with Python + Windows 10)

 

 

 

*etc2

https://webnautes.tistory.com/1433

 

https://qengineering.eu/install-opencv-4.5-on-jetson-nano.html

 

https://automaticaddison.com/how-to-install-opencv-4-5-on-nvidia-jetson-nano/