https://github.com/nobe4/mini-sentry

Dead-simple motion tracking with image ~hosting and notification.
https://github.com/nobe4/mini-sentry

camera motion-tracking notifications opencv slack tracking

Last synced: about 1 year ago
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Dead-simple motion tracking with image ~hosting and notification.

• Host: GitHub
• URL: https://github.com/nobe4/mini-sentry
• Owner: nobe4
• License: mit
• Created: 2017-02-27T11:07:40.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2017-04-06T21:39:45.000Z (about 9 years ago)
• Last Synced: 2025-04-02T20:22:17.479Z (about 1 year ago)
• Topics: camera, motion-tracking, notifications, opencv, slack, tracking
• Language: Python
• Size: 22.5 KB
• Stars: 4
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
![Mini Sentry](http://wiki.teamfortress.com/w/images/e/ea/Red_Mini_Sentry.png)

# Mini Sentry

This is a dead-simple movement detection application with slack notification.

To install, configure and run the script, see [`sentry.py`](https://github.com/nobe4/mini-sentry/blob/master/sentry.py).

# Theory

The detection algorithm is based on the work of Kameda, Y. & Minoh, M. in *"A human motion estimation method using 3-successive video frames."*  

The idea is to compare a frame against the previous and next one, and apply a bitwise and to the result. That way we can remove most of the artifacts of a temporal comparison.  

The movement is then obtained by looking at pixels above a certain threshold in that final and image. In this version, number of pixels changing is also monitored in order to reject case with too many changes (e.g.: major background change, camera movement, etc.)

# License

This script is released under the [MIT License](https://github.com/nobe4/mini-sentry/blob/master/LICENSE).

OpenCV is used in respect with its [3-clause BSD License](http://opencv.org/license.html).

Requests is used in respect with its [Apache License, Version 2.0](http://docs.python-requests.org/en/master/user/intro/#requests-license).

All references to TeamFortress and Valve are properties of their respective owners.