OK. No issues.
Regards,
Swati.
Search found 19 matches
- Thu Jan 20, 2022 1:17 pm
- Forum: Scenarios and BCI design
- Topic: Need of p300 speller test data in .ov format
- Replies: 2
- Views: 7571
- Thu Jan 20, 2022 5:42 am
- Forum: Scenarios and BCI design
- Topic: Need of p300 speller test data in .ov format
- Replies: 2
- Views: 7571
Need of p300 speller test data in .ov format
Hello there, I checked the below site for pre-recorded speller dataset in .ov format. http://openvibe.inria.fr/datasets-downloads/ At the end of the page, there is a "test dataset for speller". This contains a 10 character speller dataset for training and 10 character speller dataset for testing. Is...
- Thu Dec 09, 2021 8:18 am
- Forum: Scenarios and BCI design
- Topic: Epoch Data Extraction Over Concatenated Files using Python Script
- Replies: 2
- Views: 8010
Re: Epoch Data Extraction Over Concatenated Files using Python Script
Hello Thomas, Thanks a lot for understanding my issue and confirming it from your side. I am working on a P300 Speller and I am gathering 360 characters data for training a CNN-1D network model. For this I need to concatenate 36 OV files (Each file containing data for 10 characters) Out of 36 files,...
- Thu Dec 02, 2021 2:55 pm
- Forum: Tutorial scenarios
- Topic: Use of OpenVibe Stimulations for epoching
- Replies: 3
- Views: 8594
Re: Use of OpenVibe Stimulations for epoching
Hello there, Below is what I assumed and could move forward. I am using C++ terminology to explain my understanding. - "VisualStimulationStart" might be the Base stimulation. - "Target" and "NonTarget" might be the SubClasses of Base stimulation. - Base stimulation "VisualStimulationStart" might be ...
- Wed Dec 01, 2021 11:17 am
- Forum: Scenarios and BCI design
- Topic: Epoch Data Extraction Over Concatenated Files using Python Script
- Replies: 2
- Views: 8010
Epoch Data Extraction Over Concatenated Files using Python Script
Hello there, I am stating my issue below: I am dumping the samples in 600 msec epoch after every stimulation, into an excel sheet using python. I have a sampling frequency of 256 Hz. I am decimating the signal by 4. And I am considering 0.6 msec epoch. This gives me 38 samples per epoch per channel....
- Thu Nov 11, 2021 3:54 am
- Forum: Help for building the software
- Topic: OV version - 3.2.0 build error
- Replies: 4
- Views: 7536
Re: OV version - 3.2.0 build error
Thank you for all the help.
Regards,
Swati.
Regards,
Swati.
- Tue Nov 09, 2021 7:24 pm
- Forum: Help for building the software
- Topic: OV version - 3.2.0 build error
- Replies: 4
- Views: 7536
Re: OV version - 3.2.0 build error
Hello Thomas, Thanks for your prompt reply. I think it was just a matter of cleaning up the "build" folder. It looks like my build is successful now. I could not attach the log because the file size was big. So, I am uploading it at below location. https://drive.google.com/file/d/1w2YaFFBHTq_qjTdTIz...
- Tue Nov 09, 2021 3:46 pm
- Forum: Help for building the software
- Topic: OV version - 3.2.0 build error
- Replies: 4
- Views: 7536
OV version - 3.2.0 build error
Hello, I am trying to build the new version of OV (3.2.0) released in end of Oct. I am getting the following error: error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MD_DynamicRelease' doesn't match value 'MT_StaticRelease' in ovCChrono.cpp.obj Could you please let me know if there is so...
- Mon Aug 23, 2021 2:00 pm
- Forum: Tutorial scenarios
- Topic: UI issue with P300 Speller
- Replies: 1
- Views: 6817
UI issue with P300 Speller
Hello, I have downloaded the code for OpenVibe 3.1 and built it. I am facing one User Interface (UI) issue in the training scenario. I am elaborating the issue along with the screenshots below. Step 1 - When I open the list of classifiers for the first time, it appears as follows. (The default class...
- Sun Jun 06, 2021 5:24 pm
- Forum: Tutorial scenarios
- Topic: Use of OpenVibe Stimulations for epoching
- Replies: 3
- Views: 8594
Use of OpenVibe Stimulations for epoching
Hello there, As far as I know, P300-Speller scenario uses "OVTK_StimulationId_Target" and "OVTK_StimulationId_NonTarget" stimulations during its "training" mode for epoching. P300-Speller also uses "OVTK_StimulationId_VisualStimulationStart" during its "online" mode for epoching. Question 1 - Should...
- Thu Apr 08, 2021 5:12 am
- Forum: Designer
- Topic: Invoke Python Classifiers from OpenVibe
- Replies: 1
- Views: 7263
Invoke Python Classifiers from OpenVibe
Hello there, I have implemented a couple of python scripts for the following purposes: 1. Invoke python's Independent Component Analysis (ICA) and Principle Component Analysis (PCA) functions from OV scenario 2. Invoke python's Autoregressive Coefficients calculation functions from OV scenario 3. In...
- Sat Mar 20, 2021 6:36 am
- Forum: Boxes
- Topic: AutoRegressive Coefficients - Seem to be large for a normalized signal
- Replies: 1
- Views: 6993
Re: AutoRegressive Coefficients - Seem to be large for a normalized signal
Just to conclude:
I wrote a python script to invoke python module of AR coefficients. And it gives similar results as OpenVibe's AR coefficients.
Which confirms the correct functioning of OV AR coefficients module.
Thanks!
openvibeexplorer.
I wrote a python script to invoke python module of AR coefficients. And it gives similar results as OpenVibe's AR coefficients.
Which confirms the correct functioning of OV AR coefficients module.
Thanks!
openvibeexplorer.
- Mon Mar 15, 2021 10:09 am
- Forum: Boxes
- Topic: AutoRegressive Coefficients - Seem to be large for a normalized signal
- Replies: 1
- Views: 6993
AutoRegressive Coefficients - Seem to be large for a normalized signal
Hello there, I have an EEG signal whose amplitude is normalized between -1 to +1 within each epoch. There are 256 samples within an epoch. Each epoch (256 samples) is an input to AutoRegressive box of order 5. I am getting following auto-regressive coefficients for a single epoch: 1,-4.78718,9.30318...
- Wed Feb 10, 2021 3:49 pm
- Forum: Acquisition server and drivers
- Topic: Combining/Joining OpenVibe data files
- Replies: 1
- Views: 6968
Combining/Joining OpenVibe data files
Hello there, I would like to know if we can combine/join multiple OpenVibe data file (".ov" files) and make them into one huge file. I want to do group testing of my algorithm. Hence this requirement. If there is any other way to do grouping of data, please feel free to suggest. Regards, openvibeexp...
- Thu Jan 28, 2021 1:11 pm
- Forum: Tutorial scenarios
- Topic: OpenVibe P300 Speller Online - No "Green" box displayed
- Replies: 6
- Views: 10215
Re: OpenVibe P300 Speller Online - No "Green" box displayed
Hi there, - I fetched the whole git repository just yesterday. - I used the command "git submodule update --init --recursive" to fetch each submodule recursively. - I made sure there is no "build" and "dist" directory. - I also removed the "AppData\Roaming\openvibe-3.0.0\scenarios" and checked that ...