How to Install OpenCV on a Raspberry Pi

Опубликовано: 31 Март 2025
на канале: Sam Westby Tech

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Here's how you can install OpenCV on your Raspberry Pi 3, 4, and Zero 2 W. This is straightforward and all it takes is some time and patience. Leave comment with a question if you have one or a request for a future tutorial.

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Learn OpenCV: • OpenCV for Python

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TIMESTAMPS and INSTRUCTIONS
0:00 Intro

0:13 Access the terminal of your Pi

0:34 Check if you're using all of your system memory with:
df -h
If you're not using most of it, run
sudo raspi-config
advanced -- expand filesystem
reboot your pi

1:19 Update and upgrade
sudo apt-get update && sudo apt-get upgrade

1:35 Check your python version
python3 -V

sudo apt-get install python3-pip python3-virtualenv
mkdir project
cd project
python3 -m pip install virtualenv
python3 -m virtualenv env
source env/bin/activate

3:03 We need a bunch of system packages (credit to https://singleboardbytes.com/647/inst...)

sudo apt install -y build-essential cmake pkg-config libjpeg-dev libtiff5-dev libpng-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libfontconfig1-dev libcairo2-dev libgdk-pixbuf2.0-dev libpango1.0-dev libgtk2.0-dev libgtk-3-dev libatlas-base-dev gfortran libhdf5-dev libhdf5-serial-dev libhdf5-103 libqt5gui5 libqt5webkit5 libqt5test5 python3-pyqt5 python3-dev

If you're using a PiCamera run:
pip install "picamera[array]"
Users of PiCamera may also have to enable Camera Support:
sudo raspi-config
Inferface Options
Legacy Camera Support -- Enable

4:15 Install OpenCV
pip install opencv-contrib-python
--Takes a long time

5:25 Testing
python
import cv2
cv2.__version__