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DAVID-Laserscanner Forum • View topic - Calibration panel
Dear DAVID Community,

In 2016, DAVID and this forum have been integrated into HP Inc.
This forum has been read-only since then, and will be switched off by then end of 2019.

To everyone who has contributed here, we thank you for all your work and for the constructive, helpful and friendly atmosphere you have created!
Please continue to discuss on the HP Support Forums.

Calibration panel

The place for questions, problems, comments and tips regarding the camera calibration.

Calibration panel

Postby stenli21 » Wed Jun 19, 2013 8:31 pm

Hello forum users.

Show you how to precision manufacturing the calibration panel can affect the results of the scan. I mean, for instance - a possible curvature of the panel or not the absolute accuracy of 90 degrees.
If someone else has the experience - please share.

Sincerely, stenli21
stenli21
 
Posts: 11
Joined: Wed Sep 14, 2011 9:55 am

Re: Calibration panel

Postby Bobby » Fri Jun 21, 2013 2:49 am

DAVID calibration panels included in SLS-1 kit are made from product similar to brand name Alupanel or Dibond. It is aluminum sheets sandwich with polypropylene center to make very stiff torsion box type panel, that is very flat. This is used very much in display and printing industry. The panels included with SLS-1 are very flat and have 90 degree slotted holder to make sure 100% panels are at exactly 90 degrees.
Bobby
 
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Joined: Thu May 16, 2013 11:58 pm

Re: Calibration panel

Postby travandcon » Wed Jun 26, 2013 3:06 pm

travandcon
 
Posts: 47
Joined: Wed May 01, 2013 10:41 pm

Re: Calibration panel

Postby Bobby » Thu Jun 27, 2013 5:48 pm

Attached. These are plastic 200x200mm long each leg.

You can make in wood or other material using router on flat piece of material. You only need slots to hold Alubond calibration panels.
Attachments
CalibrationBrackets.jpg
Bobby
 
Posts: 81
Joined: Thu May 16, 2013 11:58 pm

Re: Calibration panel

Postby Austin » Fri Jun 28, 2013 7:35 am

Lenovo T420:intel i7-2640M,4GB RAM;Acer K11;Imaging Source DMK 23G445,DMx 41BUC02+Pentax H614M,Pentax C2514-M
Austin
 
Posts: 100
Joined: Fri May 04, 2012 4:40 am
Location: Guangdong,China

Re: Calibration panel

Postby Austin » Fri Jun 28, 2013 12:11 pm

Bobby, can you show me the calibration view in David and the scan of the calibration board and the "All" shown in David.
Thanks a lot
Lenovo T420:intel i7-2640M,4GB RAM;Acer K11;Imaging Source DMK 23G445,DMx 41BUC02+Pentax H614M,Pentax C2514-M
Austin
 
Posts: 100
Joined: Fri May 04, 2012 4:40 am
Location: Guangdong,China

Re: Calibration panel

Postby Bobby » Fri Jun 28, 2013 6:41 pm

The calibration panels slip right into the 3mm channels - no different than if you had a piece of plywood or something.

I do not have camera with me. If you look at Google Images for "david calibration pattern" you will find these pictures.
Bobby
 
Posts: 81
Joined: Thu May 16, 2013 11:58 pm

Re: Calibration panel

Postby Austin » Sat Jun 29, 2013 1:12 am

Lenovo T420:intel i7-2640M,4GB RAM;Acer K11;Imaging Source DMK 23G445,DMx 41BUC02+Pentax H614M,Pentax C2514-M
Austin
 
Posts: 100
Joined: Fri May 04, 2012 4:40 am
Location: Guangdong,China


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