[Tutorial] Installing OpenCV on Raspberry Pi 4B with Ubuntu 20.04

This guide will show how to install OpenCV 4.5.0 (latest) on Raspberry Pi 4B running Ubuntu Server 20.04, where architecture is ARM64 (aarch64) – which is unusal part.

but installing procedure never changes – thanks to CMake. We can build own library within Raspberry Pi with following tutorials.

OpenCV-aarch64

This is a guide to natively install OpenCV on aarch64/arm64 devices (Updated 2020-12-13, by @LimeOrangePie)

Pre-requisites

Your aarch64 device should have Ubuntu/Debian/Armbian OS flashed on it.

Steps

  1. Install dependencies
sudo apt-get install python3-dev python3-pip python3-numpy

sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev  libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev protobuf-compiler libgflags-dev libgoogle-glog-dev libblas-dev libhdf5-serial-dev liblmdb-dev libleveldb-dev liblapack-dev libsnappy-dev libprotobuf-dev libopenblas-dev libgtk2.0-dev libboost-dev libboost-all-dev libeigen3-dev libatlas-base-dev libne10-10 libne10-dev

pip3 install neon

sudo apt-get install libneon27-dev

sudo apt-get install libneon27-gnutls-dev
  1. Download Source
cd ~/

git clone https://github.com/opencv/opencv.git -b 4.5.0 --single-branch

git clone https://github.com/opencv/opencv_contrib.git -b 4.5.0 --single-branch
  1. Configuring OpenCV using cmake:

Put your username in place of [username] below for the path to opencv_contrib/modules

mkdir opencv_build

cd opencv_build

cmake -D CMAKE_BUILD_TYPE=RELEASE -D ENABLE_NEON=ON -D ENABLE_TBB=ON -D ENABLE_IPP=ON -D ENABLE_VFVP3=ON -D WITH_OPENMP=ON -D WITH_CSTRIPES=ON -D WITH_OPENCL=ON -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=../opencv_contrib/modules/ ../opencv
  1. Compilation:
make -j${nproc}

sudo make install
  1. Testing:
python3
>>import cv2
>>

Repository: https://github.com/jungin500/OpenCV-aarch64

Original Repository: https://github.com/huzz/OpenCV-aarch64

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