Rank: 2074 based on 35 downloads (last 30 days) and 3 files submitted
photo

Glen Lichtwark

E-mail
Lat/Long
-27.0, 153.0

Personal Profile:
Professional Interests:
biomechanics, image processing, signal processing, simulation

 

Watch this Author's files

 

Files Posted by Glen View all
  • 1 - 3 of
  • 3
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
30 Oct 2011 Screenshot Muscle fascicle tracking - Ultrasound Implementation of an optical flow algorithm to track muscle length changes imaged with ultrasound. Author: Glen Lichtwark gui, image processing, muscle, ultrasound 24 5
  • 5.0
5.0 | 2 ratings
24 Feb 2011 Screenshot Optitrack SDK interface demo Demonstration file on how to interface directly with Natural Points USB cameras (TrackIR or FLEX) Author: Glen Lichtwark instrument driver, trackir, optitrack 4 2
22 Jan 2010 Tracking Tools (Optitrack) Demo on how to use the Tracking Tools API from Matlab to interface with Optitrack cameras. Author: Glen Lichtwark instrument driver, measurement, optitrack, tracking 7 4
  • 5.0
5.0 | 1 rating
Comments and Ratings by Glen View all
  • 1 - 2 of
  • 2
Updated File Comments Rating
30 Oct 2011 Muscle fascicle tracking - Ultrasound Implementation of an optical flow algorithm to track muscle length changes imaged with ultrasound. Author: Glen Lichtwark

Dan, you'll have to be more specific. Can you get the video file to open at all? If not, then this is probably due to an incompatibility of the video compression. Try installing DivX as described. If you are getting an error message then I'll need to know what the message is. Please ensure you are also using Matlab 2009 onwards.
07 Jul 2010 Affine optic flow Estimates the parameters of an affine (first-order) optic flow model from two images. Author: David Young

Comments and Ratings on Glen's Files View all
  • 1 - 5 of
  • 12
Updated File Comment by Comments Rating
11 Apr 2013 Tracking Tools (Optitrack) Demo on how to use the Tracking Tools API from Matlab to interface with Optitrack cameras. Author: Glen Lichtwark Lichtwark, Glen

Jose9, are you using a 32-bit or 64-bit version of Matlab? The 64-bit version will not work, however perhaps if you install the new version of Motive with your Tracking Tools license, then this may work. I will test this in the coming months.
23 Nov 2012 Tracking Tools (Optitrack) Demo on how to use the Tracking Tools API from Matlab to interface with Optitrack cameras. Author: Glen Lichtwark jose9

Hi Glen, I'm interested in your work, i have just purchased TT 2.5.0, and i used your matlab code with any succeed, and do you have any idea about the solution of this.

Thank very much

26 Oct 2012 Tracking Tools (Optitrack) Demo on how to use the Tracking Tools API from Matlab to interface with Optitrack cameras. Author: Glen Lichtwark Lichtwark, Glen

For anyone who is interested, I have recently tried running previously posted Matlab code on the latest 64-bit version of TT (2.5.0) with a 64-bit version of Matlab and haven't succeeded. It seems that 'loadlibrary' throws an error that I can't pinpoint the source of. I will look into this further for a solution....
30 Aug 2012 Muscle fascicle tracking - Ultrasound Implementation of an optical flow algorithm to track muscle length changes imaged with ultrasound. Author: Glen Lichtwark Robert

I was wrong - installing DivX as suggested solved the problem…
30 Aug 2012 Muscle fascicle tracking - Ultrasound Implementation of an optical flow algorithm to track muscle length changes imaged with ultrasound. Author: Glen Lichtwark Robert

Hi, the script runs flawlessly on Matlab R2009 under Windows. On R2012a (Mac) VideoReader seems to be unable to read the video file, though.

Error using VideoReader/init (line 447)
Failed to initialize internal resources.

Error in VideoReader (line 132)
obj.init(fileName);

The videos display nicely using VLC, so I don't suppose this is a codec issue.

Any suggestions?
Top Tags Applied by Glen
  • 1 - 5 of
  • 9
instrument driver, optitrack, gui, image processing, measurement
Files Tagged by Glen View all
  • 1 - 3 of
  • 3
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
30 Oct 2011 Screenshot Muscle fascicle tracking - Ultrasound Implementation of an optical flow algorithm to track muscle length changes imaged with ultrasound. Author: Glen Lichtwark gui, image processing, muscle, ultrasound 24 5
  • 5.0
5.0 | 2 ratings
24 Feb 2011 Screenshot Optitrack SDK interface demo Demonstration file on how to interface directly with Natural Points USB cameras (TrackIR or FLEX) Author: Glen Lichtwark instrument driver, trackir, optitrack 4 2
22 Jan 2010 Tracking Tools (Optitrack) Demo on how to use the Tracking Tools API from Matlab to interface with Optitrack cameras. Author: Glen Lichtwark instrument driver, measurement, optitrack, tracking 7 4
  • 5.0
5.0 | 1 rating

Contact us