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

weird vertical lines in scan

Questions, problems, comments and tips regarding the 3d scanning process.

weird vertical lines in scan

Postby ashvi » Mon Nov 15, 2010 8:12 pm

Hello,

We got rid of the horizontal lines in the scan. But there seems to be another problem. We see vertical lines now on even perfectly smooth surfaces. I have attached pictures of our scan results.

trial3Snap00.png


trial3Snap101.png
ashvi
 
Posts: 5
Joined: Wed Jul 28, 2010 6:34 pm

Re: weird vertical lines in scan

Postby Sven » Wed Nov 17, 2010 2:27 pm

Hello Ashvi,

which camera are you using? If you are using the Logitech webcam (or similar), there are some issues about the camera settings.

Please see here about resolution:
viewtopic.php?f=6&t=2277

and here about frame rate:
viewtopic.php?f=6&t=2376

Hope this helps.
Sven
User avatar
Sven
DAVID Developer
 
Posts: 1541
Joined: Mon Jan 22, 2007 8:59 am
Location: Braunschweig, Germany

Re: weird vertical lines in scan

Postby ashvi » Fri Dec 03, 2010 10:04 pm

Hello

We were able to get rid of those weird vertical grid lines in our scans. We are using a Nikon D90 SLR camera to capture the scan videos. We think that the heavy motion JPEG compression of the D90 and also the jagged downsampling issue caused those vertical grid lines.

We tried the Final Cut plugin to reduce the downsampling artifacts:

http://www.mattias.nu/plugins/ (see "D90 Upscaler")

After applying the upscaler, the scan result had no more grid lines.

Thanks,
Ashwini
ashvi
 
Posts: 5
Joined: Wed Jul 28, 2010 6:34 pm


Return to 3D Laser Scanning

Who is online

Users browsing this forum: No registered users and 3 guests

cron