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

SL cam settings

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

SL cam settings

Postby MagWeb » Sat Mar 05, 2011 11:49 am

Hi,

think there maybe some of you be interested in the next weeks:

Working with SL the cam settings have to be set a bit different than scanning with a laser:

You´ve to set them according the refresh rate of your projector. I get best results setting exposure as close to the refresh time as possible.

Using a global shutter device as a DAVID CCD you´ll notice:

On short exposure (1/179) and rather low light, there´s a strange dim-out /dim-in behaviour:
Even with all auto features disable the cam starts with a normal images>>>dims to black>>> and dims in again.
On normal exposure (1/30 , near to the refresh) all is fine;
On longer exposure (1/16) the cam flickers.

This behaviour seems to be caused by a interference of both device timings (same as: why wheels turn backwards in Western Movies)

Gunter
MagWeb
Moderator
 
Posts: 2499
Joined: Wed Jul 18, 2007 8:48 pm

Return to Structured Light Scanning

Who is online

Users browsing this forum: No registered users and 2 guests

cron