Tracking application

[Unregistered]

I'm looking for a suggestion:

I am trying to track a ball moving across a fixed background.

I have successfully isolated the ball by splitting my source video, and putting a delay on one of the splits, then sending the original and the delayed feed into the absolute difference filter.

The output is my moving ball isolated in a nice black background.

How can I now get the x,y coordinates and size of this object? The Blob Finder doesn't seem to pick it up.

Thanks for any suggestions!

[Bernd Peretzke]

Hi,

The MV Blob Finder should do this job. Have you played around with the pre-processing parameter, like threshold ...?
Maybe you could post an image from your ball.

Regards
Bernd

[kcad]

Thanks Bernd - that worked after some trial and error.

Is there more documentation about the Blob Pre Processing parameters? I only found a phrase about each parameter in the documentation.