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DAVID-Laserscanner Forum • View topic - DAVID 5 Beta
Dear DAVID Community,

As you are probably aware, the entire DAVID company, team and product range has been integrated into HP Inc.
This forum is now read-only. Relevant content has been migrated to HP and merged into HP's Support Forums on November 1, 2016.

To start new discussions for 3D Scanning, please register and post your new topic at the HP Support Forums

DAVID 5 Beta

Discussions about latest DAVID developments, beta versions...

Re: DAVID 5 Beta

Postby Curiousjeff » Thu Jul 21, 2016 8:41 am

Hi Sven,

I made a presentation yesterday to Doctors at my local hospital using David 4.

They were impressed and asked me about the new dual camera mode.

I started testing this morning without success.

1) The scan is only the partial result of camera A. No scan from camera B

2) Bug: I am able to calibrate both cameras at the same time, but as soon as I shut one camera off (in David5, not touching the real camera) and put it back on, the calibration DATA is changed (?). See the images included

Image 1 is original calibration
All other images are after simply turn off and then back on each camera in David

I was trying to scan with both cameras, then with camera A and then B to see if the stereo scan was using both cameras. Because of the bug mentionned above. Once a camera is turned off, it's all lost.

3) The option to save and load the calibration file is gone. This was useful, especially with the above problem.

I am having problem under Windows 10, but I'll keep that for another post.

Jeff
Attachments
Capture1.PNG
Capture2.PNG
Capture2.PNG (32.86 KiB) Viewed 3674 times
Capture3.PNG
Capture3.PNG (26.46 KiB) Viewed 3674 times
Panasonic GH4 4K with lens 12-35, Inogeni 4K to USB3 hdmi capture device, projectors: Acer K135/Acer K11/NEC V260X, Canon 60D, macro 60 mm, MagicLantern
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Re: DAVID 5 Beta

Postby Curiousjeff » Thu Jul 21, 2016 8:42 am

The calibration of both cameras after turning them off and then back on in David 5
Attachments
Capture4.PNG
Panasonic GH4 4K with lens 12-35, Inogeni 4K to USB3 hdmi capture device, projectors: Acer K135/Acer K11/NEC V260X, Canon 60D, macro 60 mm, MagicLantern
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Re: DAVID 5 Beta

Postby Curiousjeff » Thu Jul 21, 2016 8:46 am

I did not select "Extended view"

Jeff
Panasonic GH4 4K with lens 12-35, Inogeni 4K to USB3 hdmi capture device, projectors: Acer K135/Acer K11/NEC V260X, Canon 60D, macro 60 mm, MagicLantern
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Re: DAVID 5 Beta

Postby Sven » Thu Jul 21, 2016 2:50 pm

Thanks, Jeff. We have been able to reproduce the problem.
During normal operation where you don't switch cameras after calibration, everything works fine. However of course you are right, it should restore the calibration after switching a camera off and on. We are working on a fix.
Sven
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Re: DAVID 5 Beta

Postby Sven » Thu Jul 21, 2016 2:55 pm

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Re: DAVID 5 Beta

Postby Curiousjeff » Thu Jul 21, 2016 10:18 pm

Thanks Sven for explaining.

I had not understood at first that stereo was not a question a faster scanning but of higher precision.

I guess "extended view" is the sum of the scans of camera A and camera B ?

For the application at the hospital, since they will be scanning people with texture (faces, hands, etc...) speed is important to avoid movements.

Jeff
Panasonic GH4 4K with lens 12-35, Inogeni 4K to USB3 hdmi capture device, projectors: Acer K135/Acer K11/NEC V260X, Canon 60D, macro 60 mm, MagicLantern
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Re: DAVID 5 Beta

Postby jixiang » Fri Jul 22, 2016 6:10 am

DAVID 5 is very pleased to support the dual camera, I test a bit. Installation of 2 cameras, the success of the calibration did not have a calibration point of view? (no calibration info).So do not know whether the scan time in the end is 1 cameras at work or 2 cameras at work?
Camera settings or DAVID4 interface is better, the resolution can be selected directly. My camera in DAVID5 can not change the resolution, DAVID4 can change the resolution.
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Re: DAVID 5 Beta

Postby jixiang » Fri Jul 22, 2016 6:17 am

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Re: DAVID 5 Beta

Postby Sven » Fri Jul 22, 2016 9:42 am

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Re: DAVID 5 Beta

Postby Sven » Fri Jul 22, 2016 9:45 am

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Re: DAVID 5 Beta

Postby Sven » Fri Jul 22, 2016 9:47 am

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Re: DAVID 5 Beta

Postby Sven » Fri Jul 22, 2016 9:57 am

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Re: DAVID 5 Beta

Postby Curiousjeff » Fri Jul 22, 2016 11:06 am

Ok. Great. I had not looked on that side of the screen.
Panasonic GH4 4K with lens 12-35, Inogeni 4K to USB3 hdmi capture device, projectors: Acer K135/Acer K11/NEC V260X, Canon 60D, macro 60 mm, MagicLantern
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Re: DAVID 5 Beta

Postby micr0 » Wed Jul 27, 2016 1:07 am

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Calib David 5.jpg
Calib David 5 fail.jpg
Calib David 4.jpg
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Re: DAVID 5 Beta

Postby Sven » Wed Jul 27, 2016 7:55 am

Hi Micr0,
Please turn up the camera exposure! The left panel is much too dark. The sine waves are cut off at the bottoms.
(Or rotate the panels so that the projector hits the left side better.)

It may be that DAVID4 was more tolerant to that. But when I look at your DAVID4 screen shot, the left side is also too dark, the sine waves are cut off, and the calibration can't be very good.

Please let us know if that helps.
Sven

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