Dumbbell Calibration

[Chunlai Wu]

Dear Alex,

I managed to perform a single plate calibration first to run the dumbbell calibration in the OpenPTV. Images are ready, but I suspect there is something wrong in my parameter settings since I could not even detect the dots. Because my measurement volume is very small, I preprocessed the images before importing them into OpenPTV. This may have introduced some issues.

Would you be available some time this week for a meeting so that I could explain my work to you, including how I carried out my calibration in Easywand?

Thanks a lot for your help.

Best regards,

Chunlai Wu

[Alex Liberzon]

Thanks for the message

I'll take a look at your data and then we get back to this discussion 

[Alex Liberzon]

Hi Chunlai Wu

Please follow these instructions to get dumbbell working

https://openptv-python.readthedocs.io/en/latest/dumbbell_calibration.html

The main point is that you need a specific dumbbell and not just any dumbbell - we expect to see object that we can detect - two bright dots at the centeres of the otherwise dark object (invisible) with a known distance between them

Alex