OpenViBE forum

The OpenViBE community
It is currently Mon Oct 23, 2017 12:57 am

All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Wed Jan 11, 2017 12:22 pm 
Offline

Joined: Tue Dec 04, 2012 3:53 pm
Posts: 572
Location: INRIA Rennes, FRANCE
Hi all,

I've posted a little tutorial how to record Event Related Potentials (ERPs) easily with OpenViBE. The provided scenario is simple to customize to collect other kinds of event-driven data as well.

You can find the stuff here!

Cheers,
Jussi


Top
 Profile  
Reply with quote  
PostPosted: Tue Aug 29, 2017 9:53 pm 
Offline

Joined: Fri Aug 25, 2017 1:41 am
Posts: 12
@jtlindgren Thank you for this great tutorial! It's the most useful I've found thusfar.

2 questions:

1. Was there an example Lua script to go along with it?
2. I want to do what you did in the tutorial, but proceed to training, then classification, then execute commands/scripts based on those classifications rather than recording. Can you recommend any other tutorials or learning materials to use in combination with your tutorial to achieve these goals?

Thanks!

Update: I've found an ancient tutorial video and the classification-0-example.xml scenario to help me, but I'm still open to suggestions. Man, there is a lot to learn!


Top
 Profile  
Reply with quote  
PostPosted: Fri Sep 08, 2017 11:54 am 
Offline

Joined: Tue Dec 04, 2012 3:53 pm
Posts: 572
Location: INRIA Rennes, FRANCE
Hello Hackr,

the ERP Tutorial scenarios along with the .lua script are included in the OpenViBE 2.0 BETA if you dare to try that. :)

The P300 magic card scenarios are also using cue display, and they have some classification stuff inbuilt. We haven't used that scenario for a while so I'm not sure how well it works. In any case the basic idea to turn it into a classifier is the following,

1) You make a data collection scenario that displays images and records the signal and the timeline
3) You make another scenario that extracts features from the signal during relevant times and then trains a classifier with the feature vectors.
3) You use the previously trained classifier online to classify new data with features extracted in the same way. How you show the images in this case is not that clear, it might depend on what you want to do.

The ERP tutorial does the part 1, the parts 2 and 3 you'd have to think how to do them (look at motor imagery scenarios, read literature, etc). Its an active research subject.


Happy haxoring,
Jussi


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
Americanized by Maƫl Soucaze.