OpenViBE forum

Nearly 2 years have passed since last answer.

I hope there is anyone to answer my question. Is there a scientific reason why 15/16 overlap is used in CSP scenario in Openvibe with Time based epoching box? I found no clue about why this method is implemented.


Thanks in advance.

Hello tgaugry,

I evaluated the code with my friend who knows C++ but he said only changing Grazvisualization.cpp file couldn't solve the problem because it may be related with the other file. Is this correct?

If i fix only the Grazvisualization.cpp file, would that solve my problem?

Thanks.

Hello Luciano, For the acquisition of more than 2 class, i managed to change Lua script for 4 class. Here is how: 1.Copy script in docx file and paste into original lua script file(website doesn't allow me to upload :? ) and then change the filename in openvibe as described by pointing where you sav...

Hello, I am working on revising graz visualization box to show accuracy bar for 4 class(Left,Right,Down and Up) Looking at the source code, i found following areas with notes: // @fixme for >2 classes void CGrazVisualization::updateConfusionMatrix(float64 f64VoteAggregate) { if(m_eCurrentDirection =...

Gents,

It's been 6 years almost. Any progress for multi class classifier support?

Thanks.

Ok i will try your suggestion. I suspect it related to be VRML in Matlab. In your code, you use actxserver in order to use MAtlab as automation server. I am trying to bring variables into my another matlab version, that's why trying to use "GetWorkspaceData" function. However it requires handle name...

Hello Jussi, I managed to integrate my Matlab script into openvibe via Scripting box and solved thousand problems. Nowadays, in designer console it says " couldn't reach real time, ... 5 sec late" and the number is increasing although Most interestingly i was able to get real time when i tried to ru...

DEbug commands not available when using Matlab as engine, it says. I 'm stucked,phew.

Thanks Jussi, with your suggestion i add a line "addpath(genpath('C:\Program Files (x86)\openvibe\share\openvibe\scenarios\box-tutorials\matlab')); into matlab but it didn't change anything. I would like to visualize what i have done: Notwithstanding the original scenario, i think scenario shown in ...

Hello, I would like to embed some variables created in Matlab into Openvibe so that i can process in Openvibe through Matlab scripting. However, i had no success at all. When i implement "load('xxxx.mat')" into initialize function it gives me error and can't get even data from EEG headset. When i tr...

Hello, I would like to incorporate Matlab and Openvibe to carry out 2 class Motor imagery BCI. A little bit background for my study. I used Openvibe for creating scenario to get the brainwaves and extract Epochs for further processing in Matlab for offline CSP training(again in Matlab). After gettin...

Hello, My question is about Epoc in openvibe. Is the received data from Epoc through Openvibe with DC offset or not? Also, is the received data type uint16 or microvolts? All in all, what should i need to do to get received data(true,without any DC offset) in microvolts format? Thanks in advance. Ha...

Hello, I am using openvibe to feed data into matlab for processing and then will give it to openvibe for handplay scenario. My question is which variable (in which .m file) i need to use as input in matlab for my coding and which output should be available at the end so that it works without any pro...