How to use OpenCV and Cuda on Jetson Nano

1. How to bind Cuda and
OpenCV on Jetson Nano
Yoshinobu Tanno
https://ytanno.sakura.ne.jp/

2. Default is not bind OpenCV and Cuda
• I used OS (jetson-nano-jp46-sd-card-image.zip)
• We can use OpenCV and Python
• We cannot use Cuda on OpenCV
• Rebuild OpenCV ・・・

3. Easier-than-expected
• I found script
https://qengineering.eu/install-opencv-4.5-on-jetson-nano.html
• Thank you for making it!
• It may take time about 3 hours ・・・

4. Command Log
if you asked something, you input all y
• $sudo apt-get update
• $sudo apt-get upgrade
• $sudo apt-get install nano
• $sudo apt-get install dphys-swapfile
• $sudo nano /sbin/dphys-swapfile
• CONF_MAXSWAP=4096
• $sudo nano /etc/dphys-swapfile
• CONF_MAXSWAP=4096
• $sudo reboot
• $free -m
• #total is more than 8.5gb
• $wget https://github.com/Qengineering/Install-OpenCV-Jetson-Nano/raw/main/OpenCV-4-5-5.sh
• $sudo chmod 755 ./OpenCV-4-5-5.sh
• $ ./OpenCV-4-5-5.sh
• #output Congratulations! and successfully after about 3 hours
• $ rm OpenCV-4-5-5.sh
• $ sudo /etc/init.d/dphys-swapfile stop
• $ sudo apt-get remove --purge dphys-swapfile
• $ sudo rm -rf ~/opencv
• $ sudo rm -rf ~/opencv_contrib

5. Option 1:
How to check Cuda and OpenCV
• Connect USB cam

6. Option 2:
How to set wifi dongle. Easy to setup
• If you cannot use ethernet on working place ・・・
• Edimax 2-in-1 WiFi and Bluetooth 4.0 Adapter
• https://learn.sparkfun.com/tutorials/adding-wifi-to-the-nvidia-
jetson/all

7. Option2: command Log
• $sudo apt install dkms
• $git clone https://github.com/lwfinger/rtl8723bu.git
• $cd rtl8723bu
• $source dkms.conf
• $sudo mkdir /usr/src/$PACKAGE_NAME-$PACKAGE_VERSION
• $sudo cp -r core hal include os_dep platform dkms.conf Makefile rtl8723b_fw.bin
/usr/src/$PACKAGE_NAME-$PACKAGE_VERSION
• $sudo dkms add $PACKAGE_NAME/$PACKAGE_VERSION
• $sudo dkms autoinstall $PACKAGE_NAME/$PACKAGE_VERSION
• $sudo reboot now
• ----
• right icon click
• connect wifi