zed_installation.md

installation of StereoLabs ZED SDK

• if you want to use the ZED camera you need to:

  • download the sdk from: https://www.stereolabs.com/developers/release/
  • run the downloaded file and follow the instruction:

  chmod +x NAME_OF_FILE.run
  ./NAME_OF_FILE.run
  

• Once that the installation is finished you should have the /usr/local/zed directory

• if the python packages is not automatically unstalled you should:

  • activate your virtual environment (ore install it on your system) and run:
  • open the directory where the zed sdk is installed and then run the python script get_python_api.py from the virtual environment:

  cd /usr/local/zed && sudo python3 get_python_api.py
  

  • after this a new .whl will appear in the /usr/local/zed directory (e.g., pyzed-3.6-SOMETHING-ELSE.whl). run the following command

  pip install --ignore-installed /usr/local/zed/WHL_FILE_NAME.whl
  

Issues

1. ZED command sudo python3 get_python_api.py gives the following error:

   -> Downloading to '/usr/local/zed'
   Error: you must install Cuda.
   

   SOLUTION: you need to install Cuda toolkit

   • install Nvidia drivers by typing in the terminal:

   ubuntu-drivers autoinstall
   

   • download the .run cuda installer from https://developer.nvidia.com/cuda-downloads (for last version) or https://developer.nvidia.com/cuda-toolkit-archive (for old versions) selecting your current platform (linux - ubuntu, ecc):
   • make the .run file executable and run it:

   chmod +x CUDA_FILE.run
   sudo ./CUDA_FILE.run --toolkit --silent --override
   

   • Once that you have installed cuda repeat the Python packages installation step

2. ZED command sudo python3 get_python_api.py gives the following error:

   ERROR: Could not install packages due to an OSError: [Errno 13] Permission denied: '/home/USER/PROJECT_PATH/venv/lib/python3.7/site-packages/pyzed'
   Check the permissions.
   

   you should give the permission access to your user by typing:

   sudo chown -R user:user YOUR_VENV_ABSOLUTE_PATH
   

   where user = YOUR_USER_NAME e.g., user:user = federico:federico

   after this you can repeat the Python packages installation step

3. in latest version, you may encounter the following error when installing the ZED SDK (i.e. while running ./NAME_OF_FILE.run):

   Verifying archive integrity...  100%   MD5 checksums are OK. All good. Uncompressing 'ZED camera SDK by Stereolabs (Use 'sudo apt install zstd' if zstd is not found)'./ZED_SDK_Ubuntu20_cuda11.7_v3.8.0.zstd.run: 1: eval: zstd: not found
   ... Decompression failed
   .... Extraction failed.
   100%  Signal caught, cleaning up
   

   following the instructions, you should install zstd:

   sudo apt install zstd
   

   and then run again ./NAME_OF_FILE.run