Calibrating an Optitrack camera

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Calibrating an Optitrack camera

Postby Thomas_BlackOut » Fri Jun 19, 2015 10:58 pm

Hello,

I'm trying to calibrate some Optitrack cameras (Prime 13) and every time I'm done taking the snapshots I get an openCV error. I've attach a picture with the exact error message.
I've done every steps as in the manual with no luck. I'm at the point where I'm trying every options in the dialog boxes, the fun is almost gone. :?
Am I missing something? Is there a secret handshake or something to get it working?

Thanks,

Thomas
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Re: Calibrating an Optitrack camera

Postby Yvonne Groetzschel » Tue Jun 23, 2015 3:54 pm

Hello Thomas,

what WD Rev do you use?
Did you change the number of the horizontal- and vertical internal corners in the Camera Lens Calibration Settings?
Your chessboard has a size of:
H Count: 8
V Count: 6

Best regards,
Yvonne
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Re: Calibrating an Optitrack camera

Postby Thomas_BlackOut » Wed Jun 24, 2015 3:38 pm

Hi Yvonne,

I use WD rev.1100 and I tried it with rev.1284 too with the same result.
That may be the chessboard size the problem, I entered 10 x 8... I'll try it soon!

Thank you!
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Re: Calibrating an Optitrack camera

Postby alverman » Wed Jun 24, 2015 4:29 pm

rev. 1284 ?
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Re: Calibrating an Optitrack camera

Postby Dennis Kuypers » Wed Jun 24, 2015 5:28 pm

Hey,

@alverman: 1284 is not a public release. Thomas got it by other means and mentioned it only to state that it is not fixed in this newer version. That makes it easier for us to track down the issue.

Regards
Dennis
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Re: Calibrating an Optitrack camera

Postby Thomas_BlackOut » Thu Jun 25, 2015 7:08 pm

I just retried it with the same chessboard and a 9x7 config and it worked great! I guess I read the manual a bit too fast. :roll:

But when I click the Re-Acquire Cameras, the pane is scrolling down every time and it's a bit annoying to have to scroll back up each time just to keep working. Or is it a "feature"?

Thomas
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