Flask-ROS2 video stream

Flask based webinterface for ROS2 Video Stream

Prerequisite

There are some libraries and frameworks required for the program work properly.

Frameworks

• ROS2 Eloquent
• Flask
• Gunicorn
• OpenCV

Python3 Libraries

• Cvbridge
• Threading
• Signals

Building

To build the project, we must follow this steps:

Terminal 1:

$ cd ~/your_workspace/
$ colcon build
$ . install/setup.bash

After that, the two packages of the workspace are builded and the cam2imge node is initialized.

For run the subscriber node and host the website, we must follow this steps in another terminal.

Terminal 2:

$ cd src/video_stream_ros2/video_stream_ros2/
$ gunicorn --threads 5 --workers 1 --bind your_ip:8080 app:app

The last command uses the Gunicorn, a framework that act like a Python WSGI HTTP Server for UNIX. Replace your_ip by yours machine ip.