Classification in version 1.0.0

Working with OpenViBE signal processing scenarios and doing scenario/BCI design
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DarkPatate
Posts: 47
Joined: Tue Apr 07, 2015 11:31 am

Classification in version 1.0.0

Post by DarkPatate »

Hello,
I watched the video tutorial, especially the 5th part. The classification is explained with an old version of OpenVIbe. However, the XML Stimulation scenario player box is now deprecated. How realized a classification scenario, as in the video, with the new version ?

Thanks in advance !
Siméon.

jtlindgren
Posts: 775
Joined: Tue Dec 04, 2012 3:53 pm
Location: INRIA Rennes, FRANCE

Re: Classification in version 1.0.0

Post by jtlindgren »

Hello DarkPatate, the videos are indeed for an older version! Its hard work to keep videos up to date, so we cannot promise new ones any time soon.

Anyway, presently the job of the removed XML Stimulation box is usually carried out by the Lua stimulator box. Please see the motor imagery and SSVEP examples bundled under Openvibe (in bci-examples/ folder) for example lua scripts of generating stimulations.


Cheers,
Jussi

DarkPatate
Posts: 47
Joined: Tue Apr 07, 2015 11:31 am

Re: Classification in version 1.0.0

Post by DarkPatate »

Thank you very much !
If I well understand, the motor-imagery-bci does the same thing as in the video? and the ssvep example uses the blinking of objects on screen to do action, as in this video: http://www.diginfo.tv/v/12-0199-d-en.php ?

So for the first example, all the training configuration (the red arrows) is defined in the motor-imagery-bci-graz-stimulator.lua file?

Thank you again for your help!

jtlindgren
Posts: 775
Joined: Tue Dec 04, 2012 3:53 pm
Location: INRIA Rennes, FRANCE

Re: Classification in version 1.0.0

Post by jtlindgren »

All correct. :)


Happy hacking,
Jussi

DarkPatate
Posts: 47
Joined: Tue Apr 07, 2015 11:31 am

Re: Classification in version 1.0.0

Post by DarkPatate »

Thanks! :-)

Siméon.

DarkPatate
Posts: 47
Joined: Tue Apr 07, 2015 11:31 am

Re: Classification in version 1.0.0

Post by DarkPatate »

Hello,
I have a problem when I execute the scenario (see the attached picture). I don't undestand why and what is the problem, I followed the example code (in changing only the channel selector in motor-imagery-bci-2-classifier-trainer).

If you have a track, I will be happy!
Thanks in advance.
Siméon.
Attachments
openvibe_error.png
openvibe_error.png (32.29 KiB) Viewed 7879 times

DarkPatate
Posts: 47
Joined: Tue Apr 07, 2015 11:31 am

Re: Classification in version 1.0.0

Post by DarkPatate »

I tried a second time and that didn't work anymore. I don't understand the problem, do you have a page with the common errors where I can find a solution ?

Thanks in advance!

jtlindgren
Posts: 775
Joined: Tue Dec 04, 2012 3:53 pm
Location: INRIA Rennes, FRANCE

Re: Classification in version 1.0.0

Post by jtlindgren »

I'm afraid this is a bug in the scenario. :( But its easily fixed,

viewtopic.php?f=17&t=9498&p=14314#p14314

Also make sure the scenario path can be written to.


Thanks for the report,
Jussi

DarkPatate
Posts: 47
Joined: Tue Apr 07, 2015 11:31 am

Re: Classification in version 1.0.0

Post by DarkPatate »

Thanks a lot!
I saw several times all the path, but I didn't see this little missing character!

Siméon.

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