Jetson Nano OpenCV 4.1.0

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi,

I have installed python3.7
I also installed opencv 4.1.0 on my Nano using the script at https://github.com/AastaNV/JEP/blob/master/script/install_opencv4.0.0_Nano.sh and modified the version.

Now, the opencv is present in python3.6 but not in python3.7
when I type
python3.6 and then import cv2 - it’s ok. I can see cv2.version being 4.1.0
python3.7 and then import cv2 - it’s nok. module cv2 not found

Is there a trick how to install the opencv to python3.7 as well?

help, help, please :)

Cheers,
Martin

2

I have same issue.
Anyone who can help for this :)

3

I ended up compiling OpenCV from source.

Here are some instructions to do that.

http://docs.donkeycar.com/guide/robot_sbc/setup_jetson_nano/#step-4-install-opencv

4

yes, we ended up doing the same. We already figured that one so sharing the install script

#!/bin/bash
export DEBIAN_FRONTEND=noninteractive

cd ~/
apt update -y
apt upgrade -y
apt install software-properties-common -y
add-apt-repository ppa:deadsnakes/ppa -y
apt remove python3-apt -y
apt install python3.7-dev -y
apt install python3.7 -y
apt install python3-pip -y
apt install curl -y
apt install unzip -y
apt install libhdf5-serial-dev hdf5-tools -y
apt install build-essential libatlas-base-dev -y
apt install cmake -y
apt install gfortran -y
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3.7 get-pip.py
pip3.7 install -I numpy
pip3.7 install Cython
pip3.7 install boto3
pip3.7 install greengrasssdk
pip3.7 install scipy
pip3.7 install sklearn

apt install -y build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
apt install -y libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
apt install python3-apt -y
apt install -y libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
apt install -y libv4l-dev v4l-utils qv4l2 v4l2ucp
apt install -y curl
apt update

update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 1
update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 2

#CUDA
echo 'PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/cuda/bin"' >> /etc/environment
echo 'LD_LIBRARY_PATH="/usr/local/cuda/lib64"' >> /etc/environment

#OpenCV
fallocate -l 6G /mnt/6GB.swap
mkswap /mnt/6GB.swap
swapon /mnt/6GB.swap
swapon -s
curl -L https://github.com/opencv/opencv/archive/4.1.0.zip -o opencv-4.1.0.zip
curl -L https://github.com/opencv/opencv_contrib/archive/4.1.0.zip -o opencv_contrib-4.1.0.zip
unzip opencv-4.1.0.zip
unzip opencv_contrib-4.1.0.zip
cd opencv-4.1.0/
mkdir release
cd release/
cmake -D WITH_CUDA=ON -D CUDA_ARCH_BIN="5.3" -D CUDA_ARCH_PTX="" -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-4.1.0/modules -D WITH_GSTREAMER=ON -D WITH_LIBV4L=ON -D BUILD_opencv_python2=OFF -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 -D PYTHON_EXECUTABLE=/usr/bin/python3.7 -D PYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3.7 ..
make -j3
make install
ldconfig
mkdir /usr/lib/python3.7/dist-packages
cp lib/python3/cv2.cpython-37m-aarch64-linux-gnu.so /usr/lib/python3.7/dist-packages

#Torch
cd ~/
git clone --recursive http://github.com/pytorch/pytorch
cd pytorch

export USE_NCCL=0
export USE_DISTRIBUTED=0
export TORCH_CUDA_ARCH_LIST="5.3;6.2;7.2"
export USE_NUMPY=ON
pip3.7 install https://michael-dietz-tests.s3.amazonaws.com/torch-1.2.0-cp37-cp37m-linux_aarch64.whl
pip3.7 install https://michael-dietz-tests.s3.amazonaws.com/torchvision-0.3.0-cp37-cp37m-linux_aarch64.whl

pip3.7 install -r requirements.txt
pip3.7 install scikit-build --user
pip3.7 install ninja --user

python3.7 setup.py install

cd ~/
apt install -y libjpeg-dev zlib1g-dev
git clone https://github.com/pytorch/vision torchvision
cd torchvision

python3.7 setup.py install

cd ~/

#YOLO3
cd ~/
git clone https://github.com/ZQPei/deep_sort_pytorch.git
cd deep_sort_pytorch/YOLO3/
wget https://pjreddie.com/media/files/yolov3.weights
cd ..
mkdir deep/checkpoint
cd deep/checkpoint
wget https://michael-dietz-tests.s3.amazonaws.com/ckpt.t7
cd ~/

#GreenGrass
adduser --system ggc_user
groupadd --system ggc_group

wget wget https://d1onfpft10uf5o.cloudfront.net/greengrass-core/downloads/1.9.1/greengrass-linux-aarch64-1.9.1.tar.gz
tar -xzvf greengrass-linux-aarch64-1.9.1.tar.gz -C /

#unmount and delete swap file
swapoff -v /mnt/6GB.swap
rm -f /mnt/6GB.swap
1 Like
5

Thank you so much zdary and rahul.ravikumar!

6

How did you get that JEP script to run? All it returns is some (install folder) message

7

That is my complete script, it contains the parts from JEP script too.
Just flash jetpack, start jetson, open trrminal
sudo su -
And then run the install script

8

Sure but I dont want python 3.7 just opencv 4.1.0, when running the JEP script it just returns (install folder) message. How do you run the JEP script?

9

I haven’t installed JEP script myself so I don’t know the error you are refering to.
But I would imagine you need to execute it With a parameter where you want to install the opencv?