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

HARDWARE AND SETTINGS COMPARAISON

Problems, solutions and discussion about scanning with a video projector and stripe patterns.

HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Fri Oct 30, 2015 8:43 am

This thread is for comparing what combination of hardware (camera and projector ) and settings (David, camera, projectors) gives bad, good or excellent results.

I find it difficult for newcomers or does who want to upgrade their hardware to get this information easily.

Seeing what others were doing, I read a good part of this forum, tested 3 different projectors and 6 different cameras/acquisition methods.

Please feel free to contribute with your own combination and as much extra information as possible :

Calibration Corner type (negative-postive) / Calibration scale size / Horizontal - Vertical
Projector / native resolution / used resolution /frequency settings
Camera, lens, shutter speed, aperture, resolution used

David settings : number of patterns

The more information the better.

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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Fri Oct 30, 2015 8:46 am

This first test is comparing the same setup with three different acquisition methods:

Calibration panel positive (from David laser kit) , 120 mm

Projector NEC V260X native resolution 1024 x 768

1) Canon 60D Live view 27 patterns (1056x704)

2) Canon 60D + Lestcan + image grabber 21 patterns (2592 x 1728)

3) Nikon D5200 + Blackmagic capture card (1920 x 1080)

Comments:

1) I get much better results with NEC then with the Acer K135i which causes surface artifacts (I will post some test in the future with the K135i). Maybe a frequency issue or the "diamond" shape of the pixels of the DLP chip of the Acer.

2) I did not use MagicLantern in these tests for the Canon live view

3) Letscan is a little better then the Nikon + HDMI but the Nikon solution is very fast and simple (less then 15 seconds per scan)

4) Both Letscan and Nikon are much better then Canon live view
Attachments
2015-10-29_09-48-54.png
NEC+Letscan Canon -21 patterns.png
NEC+Nikon HDMI -29 patterns-3.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Fri Oct 30, 2015 8:50 am

More

Even thought the sneaker was scanned by three different methods, they align perfectly. :)
Attachments
2015-10-29_10-11-41.png
2015-10-29_09-47-44.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Fri Oct 30, 2015 8:56 am

A Vivitar +2 close-up lens was added to the NEC on all these scans
Attachments
2015-10-29_10-11-18.png
NEC+Nikon HDMI -29 patterns-4.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Sat Oct 31, 2015 8:13 am

The kitchen paper test
Attachments
Nikon - 50.png
Letscan-paper-21-3.png
2015-10-30_22-26-26.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Sat Oct 31, 2015 8:14 am

more
Attachments
2015-10-30_22-26-31.png
2015-10-30_22-26-51.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Sun Nov 01, 2015 2:40 pm

Test with the Logitech Pro 9000 (1600 x 1000 @ 5 fps)
Horizontal setup
Attachments
2015-11-01_14-33-20.png
2015-11-01_14-32-53.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Mon Nov 02, 2015 9:10 am

Different number of patterns with same setup

NEC V260X + Nikon HDMI (same as above)
David 4
Horizontal setup
Positive panel

Made only one calibration at maximum # of patterns. Used same calibration for all four scans

# of patterns
Speed (12)
Default (22)
Quality (29)
Custom (34)
Attachments
2015-11-02_08-56-41.png
2015-11-02_09-07-25.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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby DerHuette » Tue Nov 03, 2015 11:21 am

Thank you so much for starting this thread, Jeff! This is what newbees like me really need.

I hope there will be much contribution!
Acer K11 with closeup lenses, Canon EOS 550D
DerHuette
 
Posts: 28
Joined: Tue Oct 20, 2015 9:40 am
Location: Berlin, Germany

Re: HARDWARE AND SETTINGS COMPARAISON

Postby micr0 » Tue Nov 03, 2015 4:08 pm

Thanks Jeff.

The NIkon/HDMI Seem very good considering the speed.

I hope to have a new projector to try against the Optoma ML550 I've been using and can run through some parameter variations. I'll post when I have something to add.

µ

FWIW I also finally have a computer with a USB3 port and will be looking at finding a USB3 camera and trying to decrease my scan times. Again...Stand By
µ
micr0
 
Posts: 315
Joined: Wed Mar 19, 2014 3:54 pm
Location: NYC

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Tue Nov 10, 2015 11:20 pm

Made a Canon lens to Nikon body adapter to mount my Canon 60mm macro lens onto the Nikon D5200

Cannot focus at infinity, but that's not my concern,

Works great. :)

This setup:

Vertical
Calibration panel negative 33 mm
F-stop 18, shutter 1/60
Patterns 29
Nikon D5200 + HDMI capture card
+4 close up lens on projector NEC v260x
Smooth average: 0

Figure height: 10 cm

In regards to the speed of scanning, 15 seconds, this is my hardware:
Intel Xeon E5-1620 v2 @ 3.7 GHz
Ram 64GB
Windows 7, 64 bit
SSD hard drive
Nvidia quadro K4000
Attachments
2015-11-10_23-15-12.png
20151110_223711.jpg
20151110_223653.jpg
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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Tue Nov 10, 2015 11:26 pm

The original
Attachments
20151110_232326.jpg
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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby DerHuette » Wed Nov 11, 2015 10:05 am

Hi!
I've got an Acer K11 and a Canon EOS 550D now and finally can contribute to this thread. My main problem is that I get vertical stripes in a horizontal setup and horizontal stripes in a vertical setup. I tried Magic Lantern Settings as described in the forum here but it doesn't help. Maybe I do something wrong. The best solution for me is a diagonal setup.

Diagonal Setup
2015-11-10_20-53-53.png
diagonal setup


And the kitchen paper test result. Not bad, I think, but room for improvement. Setting 'Quality', everything else unaltered. 151mm calibration board. No extra lenses on projector and camera (EF-S 18-55mm). Live view.
2015-11-10_20-56-28.png
kitchen paper
Acer K11 with closeup lenses, Canon EOS 550D
DerHuette
 
Posts: 28
Joined: Tue Oct 20, 2015 9:40 am
Location: Berlin, Germany

Re: HARDWARE AND SETTINGS COMPARAISON

Postby Curiousjeff » Wed Nov 11, 2015 10:25 am

I find your scans very good.

Horizontal or vertical would save you time.

Did you try the camera like this ?

Set my Canon camera as NTSC
Frame rate 15 FPS
Shutter 30
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
Curiousjeff
 
Posts: 230
Joined: Fri Feb 27, 2015 2:17 pm
Location: Geneva, Swizerland

Re: HARDWARE AND SETTINGS COMPARAISON

Postby DerHuette » Wed Nov 11, 2015 10:53 am

Yes, that's what I did! But there still are dark bars (not colored!) slowly moving from bottom to top of the live view.

I am asking myself, as I live in Germany and as there is 50Hz in the power supply system, should I use PAL and 25 (or 12.5) fps? I'll do more testing...
Acer K11 with closeup lenses, Canon EOS 550D
DerHuette
 
Posts: 28
Joined: Tue Oct 20, 2015 9:40 am
Location: Berlin, Germany

Next

Return to Structured Light Scanning

Who is online

Users browsing this forum: No registered users and 2 guests

cron