Instalar OpenCV

Microsoft Windows

Microsoft Windows 11

WSL 2

Ubuntu 22.04.04 LTS

Instalar los paquetes:

sudo apt update
sudo apt install build-essential
sudo apt install cmake
sudo apt install git
sudo apt install pkg-config libgtk-3-dev
sudo apt install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev
sudo apt install libjpeg-dev libpng-dev libtiff-dev gfortran openexr libatlas-base-dev
sudo apt install python3-dev python3-numpy libtbb2 libtbb-dev libdc1394-25 libdc1394-dev

OpenCV:

cd ~
mkdir opencv_with_contrib
cd opencv_with_contrib
git clone https://github.com/opencv/opencv.git
git clone https://github.com/opencv/opencv_contrib.git
cd opencv
git checkout 4.x
cd ../opencv_contrib
git checkout 4.x
cd ..

Compilar OpenCV:

mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=RELEASE -D OPENCV_GENERATE_PKGCONFIG=ON -DOPENCV_ENABLE_NONFREE=ON -DENABLE_PRECOMPILED_HEADERS=OFF -DOPENCV_EXTRA_MODULES_PATH=~/opencv_with_contrib/opencv_contrib/modules -DBUILD_opencv_legacy=OFF -DCMAKE_INSTALL_PREFIX=/usr/local ../opencv
nproc				#increasing the number will make building faster. Maximum value can be found by running nproc.
make -j4
sudo make install

Probar

Ahora creamos un código en Python:

Nombre del archivo test-opencv.py

import cv2
cv2.__version__
print("OpenCV")

Lo ejecutamos:

python3 test-opencv.py

Salida:

OpenCV

OBS:

- Si sale error, es porque no se instalo correctamente OpenCV en Ubuntu (WSL).