# RC Boat tracking for Crossing Line event
**URL:** https://forum.opencv.org/t/rc-boat-tracking-for-crossing-line-event/24725
**Category:** Python
**Created:** [September 23, 2026, 6:56am UTC](https://forum.opencv.org/t/rc-boat-tracking-for-crossing-line-event/24725 "2026-09-23T06:56:35Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@brushlesspower](https://forum.opencv.org/u/brushlesspower)
#### Post date: [September 23, 2026, 6:56am UTC](https://forum.opencv.org/t/rc-boat-tracking-for-crossing-line-event/24725/1 "2026-09-23T06:56:35Z")
Hi,
for the last months and days i was trying to code a python skript to measure the time of aRC Boat when its crossing a line. This my tries are working for good conditions (Sun, no waves, fast boat)
But for the last competition we had big waves and slow boats.
i recorded some videos.
[Video](https://youtu.be/RlZg-NaNxvk)
At the moment me and the AI dont get a good tracking for the boat. Most of the time other motion is tracked.
Do you guys have an idea how to track the boat?
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### Author:  [@brushlesspower](https://forum.opencv.org/u/brushlesspower)
#### Post date: [September 23, 2026, 7:10am UTC](https://forum.opencv.org/t/rc-boat-tracking-for-crossing-line-event/24725/2 "2026-09-23T07:10:38Z")
Here the Background Subtraction Video
[Video](https://youtu.be/Co7-g7IuZqo)
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### Author:  [@crackwitz](https://forum.opencv.org/u/crackwitz)
#### Post date: [September 23, 2026, 7:53am UTC](https://forum.opencv.org/t/rc-boat-tracking-for-crossing-line-event/24725/3 "2026-09-23T07:53:07Z")
- the camera moves with the wind. that’s an issue
- clutter (people in the scene) are an issue. that is only making the problem harder than it needs to be. scene hygiene is important.
- with bgseg, history/learning rate is vital. let it get a read on the waves, dial the parameter to be slow.
- abandon bgseg entirely, run an AI object detection model instead, maybe a “segment anything” type of model. chances are, these things will catch the boat.
- maybe don’t use CV at all. simply record the video, then determine crossings manually. you only need “transport”/jogging to be possible _frame-by-frame_