Opencv Build with cuda on jetson agx orin for venv

[UnalEken]

Hi,

I created venv with python3.6 version on Jetson orin device and tried to build opencv with cuda, but I could not succeed. I am sharing the build frags and the output with you, and I don’t get any errors in the installation, I can’t see the gpu in venv.

[TomNVIDIA]

Hello,

I moved your topic to the Jetson Orin category for visibility.

[AastaLLL]

Hi,

Have you added it to the PYTHONPATH variable?
For example:

echo 'export PYTHONPATH=/usr/local/lib/python3.6/site-packages/:$PYTHONPATH' >> ~/.bashrc

Below is the steps to compile OpenCV with different python versions for your reference:

No cuda support after compiling opencv with cuda

Hi, You can modify the CMake command to build the OpenCV library for python 3.7. For example, below are steps for building OpenCV with python 3.9. ** Install NumPy for python 3.9 $ sudo -H python3.9 -m pip install numpy --upgrade numpy ** Update CMake command for python 3.9 https://github.com/AastaNV/JEP/blob/master/script/install_opencv4.6.0_Jetson.sh#L62 $ cmake \ -D PYTHON_LIBRARIES=/usr/lib/python3.9/config-3.9-aarch64-linux-gnu/libpython3.9.so \ -D PYTHON3_EXECUTABLE=/usr/bin/python3…

Thanks.

[UnalEken]

#!/bin/bash
#
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# NVIDIA Corporation and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto. Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA Corporation is strictly prohibited.
#

version=“4.5.3”
folder=“workspace”

set -e

for (( ; ; ))
do
** echo “Do you want to remove the default OpenCV (yes/no)?”**
** read rm_old**

** if [ “$rm_old” = “yes” ]; then**
** echo “** Remove other OpenCV first”**
** sudo apt -y purge libopencv**
** break**
** elif [ “$rm_old” = “no” ]; then**
** break**
** fi**
done

echo “------------------------------------”
echo " Install requirement (1/4)"**
echo “------------------------------------”
sudo apt-get update
sudo apt-get install -y build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install -y libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
sudo apt-get install -y python3.8-dev python-dev python-numpy python3-numpy
sudo apt-get install -y libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev
**sudo apt-get install -y libv4l-dev v4l-utils qv4l2 **
sudo apt-get install -y curl

echo “------------------------------------”
echo " Download opencv “${version}” (2/4)"**
echo “------------------------------------”
mkdir $folder
cd ${folder}
curl -L https://github.com/opencv/opencv/archive/${version}.zip -o opencv-${version}.zip
curl -L https://github.com/opencv/opencv_contrib/archive/${version}.zip -o opencv_contrib-${version}.zip
unzip opencv-${version}.zip
unzip opencv_contrib-${version}.zip
rm opencv-${version}.zip opencv_contrib-${version}.zip
cd opencv-${version}/

echo “------------------------------------”
echo " Build opencv “${version}” (3/4)"**
echo “------------------------------------”
mkdir release
cd release/
cmake -D WITH_CUDA=ON -D WITH_CUDNN=ON -D CUDA_ARCH_BIN=“8.7” -D CUDA_ARCH_PTX=“” -D OPENCV_GENERATE_PKGCONFIG=ON -D OPENCV_EXTRA_MODULES_PATH=…/…/opencv_contrib-${version}/modules -D WITH_GSTREAMER=ON -D WITH_LIBV4L=ON -D BUILD_opencv_python3=ON -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D BUILD_EXAMPLES=OFF -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local …
make -j$(nproc)

echo “------------------------------------”
echo " Install opencv “${version}” (4/4)"**
echo “------------------------------------”
sudo make install
echo ‘export LD_LIBRARY_PATH=/home/jetson-orin/Headlamp/lib:$LD_LIBRARY_PATH’ >> ~/.bashrc
echo ‘export PYTHONPATH=/home/jetson-orin/Headlamp/lib/python3.6/site-packages/site-packages/:$PYTHONPATH’ >> ~/.bashrc
source ~/.bashrc

echo " Install opencv “${version}” successfully"**
echo " Bye :)"**

Hello, i try with this script and i changed echo path for my venv pyhon path but it doesnt work. Opencv didnt install, i try install with this script. Do I need to install opencv first with pip install opencv-python==4.5.3?

[UnalEken]

I found now my fault echo ‘export PYTHONPATH=/home/jetson-orin/Headlamp/lib/python3.6/site-packages/site-packages/:$PYTHONPATH’ >> ~/.bashrc i wrote site-packages twice than i fixed and i am trying now again. But i have a question, is it correct this script for opencv build and install for venv?

[UnalEken]

it doesnt work :(

i try for opencv=4.5.3

[AastaLLL]

Hi,

Did you build it within or outside the env?
If you build it outside of the env, please remember to add --system-site-packages when creating the virtual environment.

openCV import error on python virtual environment

Hi, Please remember to enable the host side package to the virtual environment. $ virtualenv env --system-site-packages created virtual environment CPython3.6.9.final.0-64 in 433ms creator CPython3Posix(dest=/home/nvidia/env, clear=False, global=True) seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/home/nvidia/.local/share/virtualenv) added seed packages: pip==20.2.1, setuptools==49.2.1, wheel==0.34.2 activators BashActivator,CS…

Thanks.

[Honey_Patouceul]

You may disable python2:

cmake \
...
-D BUILD_opencv_python2=OFF \
-D PYTHON3_EXECUTABLE=$(which python3) \
-D BUILD_opencv_python3=ON \
-D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \ 
-D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
...

[UnalEken]

I tried but it doesnt work, thank u for your answer.

[UnalEken]

i did not create venv like this, i will try and i will give feedback.

[UnalEken]

Hi,

I will tell step by step
1-) I installed jetpack 5.0.2 version on my orin device and install python3.6(default python version is 3.8)
2-) I create venv with like this command virtualenv --python=python3.6 name --system-site-packages
3-) I use this souce JEP/install_opencv4.6.0_Jetson.sh at master · AastaNV/JEP · GitHub (but i change opencv version to 4.5.3 and also i change export paths like upside)
4-) Build was succesful but i cant import cv2 when i try in venv, every time build for python2.7
5-) I close opencv build for python2 with flag but still build for python2.7 :), i use opencv with gpu from python2.7
6-)So i dont build opencv for python3

When I install python3.6, opencv is not installed compared to other python versionsa and I create the virtual environment directly.

[AastaLLL]

Hi,

I tested the script with the default python 3.8 only.
Will check it and update more information with you soon.

Thanks.

[UnalEken]

Thank u i am waiting

[AastaLLL]

Hi,

Thanks for your patience.
Please give the following steps a try.

Setup

$ sudo add-apt-repository ppa:deadsnakes/ppa
$ sudo apt-get update
$ sudo apt-get install python3.6 python3.6-dev python3.6-venv

Create virtual environment (no need to use –system-site-packages)

$ virtualenv --python=python3.6 env
$ source env/bin/activate

Build OpenCV for python3.6

install_opencv4.6.0_py3.6.sh (2.6 KB)

./install_opencv4.6.0_py3.6.sh

Test

$ python3
Python 3.6.15 (default, Apr 25 2022, 01:55:53) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> cv2.__version__
'4.5.3'

Thanks.

[UnalEken]

Thank you @AastaLLL