WorldViz User Forum  

Go Back   WorldViz User Forum > Precision Position Tracker (PPT)

Reply
 
Thread Tools Rating: Thread Rating: 5 votes, 5.00 average. Display Modes
  #1  
Old 05-19-2010, 09:48 AM
GiudiceLab GiudiceLab is offline
Member
 
Join Date: May 2009
Location: Orono, ME
Posts: 49
LED dropout question

Hi,
We are trying to track two LEDs simultaneously, and occasionally one of the markers will dropout (marker indicator turns red). We're not really sure why, because the LED appears visible in all but one camera (usually) but the dropout is brief enough that we could interpolate the data if we knew how to detect when it occurs. Is there a function that we can use to check how many sensors are detected, or something else we could do to test for dropout?
Thanks,
Kate
__________________
Virtual Environments and Multimodal Interaction (VEMI) Lab

This time, it should work...
Reply With Quote
  #2  
Old 05-20-2010, 11:07 AM
Jeff Jeff is offline
WorldViz Team Member
 
Join Date: Aug 2008
Posts: 2,471
Are you using standard passive markers or Marker ID markers? Do you notice flickering of the crosshairs for the markers in the 2D views of the cameras?
Reply With Quote
  #3  
Old 05-21-2010, 08:47 AM
GiudiceLab GiudiceLab is offline
Member
 
Join Date: May 2009
Location: Orono, ME
Posts: 49
We're using standard markers and yes, there usually appears to be some flickering in one or more cameras, but sometimes not. We figured when we can't see it, it is happening really fast. We also tried fresh batteries and a different set of LEDs, just to be on the safe side.
__________________
Virtual Environments and Multimodal Interaction (VEMI) Lab

This time, it should work...
Reply With Quote
  #4  
Old 05-21-2010, 10:01 AM
Jeff Jeff is offline
WorldViz Team Member
 
Join Date: Aug 2008
Posts: 2,471
Please check your camera settings, calibrate the system, and perform the tuning procedure.

Take a look at the following video tutorial to guide you through that:
http://kb.worldviz.com/articles/1346

If you are still having problems contact support@worldviz.com for further assistance.
Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to invoke command line question billjarrold Vizard 2 01-11-2010 08:51 AM
orientation question whj Vizard 3 01-21-2009 11:22 AM
General question and question regarding arrays dan12345 Vizard 1 01-15-2008 10:15 AM
Stereo Overlap question JMOwens Vizard 2 01-08-2008 08:54 AM
viztask question asimbh Vizard 1 11-20-2007 09:12 AM


All times are GMT -7. The time now is 08:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright 2002-2023 WorldViz LLC