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realsense_installation.md

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Installation Guide

1. Install OpenCV and OpenCV-contrib

Step 1: Update and install prerequisites

sudo apt update && sudo apt install -y cmake g++ wget unzip

Step 2: Download and unpack OpenCV sources

wget -O opencv.zip https://github.com/opencv/opencv/archive/4.x.zip
wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.x.zip
unzip opencv.zip
unzip opencv_contrib.zip

Step 3: Create build directory and switch into it

mkdir -p build && cd build

Step 4: Configure

cmake -DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib-4.x/modules -DOPENCV_ENABLE_NONFREE ../opencv-4.x

Step 5: Build

cmake --build .

2. Install librealsense

Step 1: Install dependencies

Make Ubuntu up-to-date including the latest stable kernel:

sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade

Install the core packages required to build librealsense binaries and the affected kernel modules:

sudo apt-get install libssl-dev libusb-1.0-0-dev libudev-dev pkg-config libgtk-3-dev

Note: Certain librealsense CMAKE flags (e.g., CUDA) require version 3.8+ which is currently not made available via apt manager for Ubuntu LTS.

Step 2: Install build tools

sudo apt-get install git wget cmake build-essential

Step 3: Prepare Linux Backend and Development Environment

Unplug any connected Intel RealSense camera and run:

sudo apt-get install libglfw3-dev libgl1-mesa-dev libglu1-mesa-dev

Step 4: Clone and set up librealsense repository

git clone https://github.com/IntelRealSense/librealsense.git
cd librealsense 
./scripts/setup_udev_rules.sh

Step 5: Build and apply patched kernel modules

For different Ubuntu versions and kernels:

  • Ubuntu 20/22 (focal/jammy) with LTS kernel 5.13, 5.15:
./scripts/patch-realsense-ubuntu-lts-hwe.sh
  • Ubuntu 18/20 with LTS kernel (< 5.13):
./scripts/patch-realsense-ubuntu-lts.sh

Step 6: Build librealsense with examples

mkdir build && cd build
cmake ../ -DBUILD_EXAMPLES=true -DBUILD_GRAPHICAL_EXAMPLES=true -DBUILD_CV_EXAMPLES=true -DBUILD_CV_KINFU_EXAMPLE=true
sudo make uninstall && make clean && make && sudo make install