jetson_install

This section is about installing the package on Jetson series computers.

The problem is that at the time of this writing, support for Ubuntu 20.04 has not been released for Jetson, on which ROS Noetic is installed, in turn based on OpenCV 4.2.0, which has access to the DNN module. Thus, you simply cannot use a platform designed for fast graphical computing as intended for ROS. This requires reinstalling OpenCV.
__Note: __ reinstalling OpenCV and replacing cv_bridge may break other packages!

Tested on platforms:

Jetson platform	JetPack version	OpenCV version
Xavier AGX	4.4.1	4.4.0

1. Install OpenCV 4.4.0 using script https://github.com/Extended-Object-Detection-ROS/nano_build_opencv

cd
mkdir Libs && cd Libs
git clone https://github.com/Extended-Object-Detection-ROS/nano_build_opencv
./build_opencv.sh 4.4.0

Version 4.2.0 is not supported by new JetPack 2. Create symlink /usr/include/opencv --> /usr/include/opencv4

cd /usr/include
sudo ln -s opencv4 opencv

3. Download modified for cv4 cv_bridge

cd catkin_ws/src
git clone https://github.com/Extended-Object-Detection-ROS/cv_bridge_fixed_for_jetson 
catkin_build

4. Then insatll package https://github.com/Extended-Object-Detection-ROS/extended_object_detection/wiki/eod_install