Re: [Openeeg-list] A Compressive Sensing EEG system ?

[Peter K. <pet...@gm...>]

thank you,

i partly get it (compressed sensing). But what is your motivation to sample
EEG on a sub-Nyquist rate ?




Peter


On Wed, Oct 28, 2009 at 11:09 PM, Igor Carron <igo...@gm...> wrote:

> Peter,
>
> Yes it is somewhat related but as is often the case in compressed
> sensing, it is not exactly that. In compressive sensing, you get to
> acquire the signal in a different fashion than normal sampling.
> Matching pursuit techniques can be used to reconstruct the original
> signal from these compressed measurements. So in that sense, it is
> related however, as I said the acquisition process is very different.
> Let me explain in a longer e-mail how that is. .
>
> Cheers,
>
> Igor.
>
>
> ------------------------
> Igor Carron, Ph.D.
> http://nuit-blanche.blogspot.com
>
>
>
> On Wed, Oct 28, 2009 at 4:53 PM, Peter Kollarik
> <pet...@gm...> wrote:
> > Hello,
> >
> > is this somehow related ?
> >
> > http://www.scholarpedia.org/article/Matching_pursuit
> > http://eeg.pl/mp
> > http://bci.fuw.edu.pl/wiki/Main_Page
> >
> >
> > Peter
> >
> >
> >
> > On Wed, Oct 28, 2009 at 10:45 AM, Igor Carron <igo...@gm...>
> wrote:
> >>
> >> Hello all,
> >>
> >> I am looking into the feasibility of making an EEG system based on
> >> compressive sensing. For those of you who don't know about this new
> >> technology, it is a way of sampling signals at a much lower rate than
> >> what is expected with the Nyquist criterion.
> >>
> >> For those of you interested,.I have made a list of CS hardware here:
> >> http://igorcarron.googlepages.com/compressedsensinghardware which
> >> include the now famous single pixel camera from Rice University, the
> >> Technion Modulated Wideband Converter or the Rice/U Michigan
> >> Analog-to-Information: Random Pre-Integration System.
> >>
> >> The main aspect of compressive sensing that is different from the
> >> normal acquisition process because in some cases one needs to modulate
> >> the analog signal before performing a low frequency acquisition. But
> >> they are many ways to do this either in Signal processing or directly
> >> in the hardware, yet I am not an electronics person.
> >>
> >> Is anybody with a background in electronics interested in continuing
> >> this discussion ? if there is enough interest, we could keep the
> >> conversation on the list.
> >>
> >> Cheers,
> >>
> >>
> >> Igor.
> >> ------------------------
> >> Igor Carron, Ph.D.
> >> http://nuit-blanche.blogspot.com
> >>
> >>
> >>
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