need matlab code for two-dimensional PCA

[tumolas]

hello, everyone

I am currently working on face recognition project and wanna implement
it by using two-dimensional PCA, is there anyone who could be kind to
provide matlab source code?

Thanks a lot!

[Zou Wilman]

me too~~
thank you ~

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WW ZOU

[Uzma Azeem]

I have done work on it using PCA. from which country u belong?

[jing wu]

I am China but right now I am studying in Finland. Did u use two-dimensional PCA algorithm? 

Thank u for reply :)  

2009/7/15 Uzma Azeem <uzma....@gmail.com>

[elkhiyarih]

You should be able to find PCA implementations on Matlab Central.
Here's a link to PCA code for face recognition

http://www.mathworks.com/matlabcentral/fileexchange/17032

[jing wu]

Yeah, i knew this code but right now I need two-dimensional PCA which is different from original PCA.

2009/7/16 elkhiyarih <elkhi...@gmail.com>

[Zou Wilman]

2d-pca is same with PCA?

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WW ZOU

[Anouar mellakh]

you can do some research and the 2D-PCA is different from PCA
http://www.tsi.enst.fr/~chollet/Biblio/Articles/Domaines/BIOMET/BioSecure/UZ/pami2004a.pdf

[Zou Wilman]

thank you very much.
is there any public matlab code for 2D-PCA?
thx

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WW ZOU

[hulijo]

Hi all,
2D PCA is the same as PCA. Its just applied to the image rows or
columns of an image and not the pixels ordered into vector form. It
should be easy enough to modify PCA to be used for 2D PCA either by
appropriatelly selecting your input vectors or by modifying the code
from one of the above links.

Regards,

Vito

On Jul 17, 7:43 am, Zou Wilman <zwil...@gmail.com> wrote:
> thank you very much.
> is there any public matlab code for 2D-PCA?
> thx
>
>
>
>
>
> On Fri, Jul 17, 2009 at 1:11 PM, Anouar mellakh <me.ano...@gmail.com> wrote:
> >  you can do some research and the 2D-PCA is different from PCA
>

> >http://www.tsi.enst.fr/~chollet/Biblio/Articles/Domaines/BIOMET/BioSe...<http://www.tsi.enst.fr/%7Echollet/Biblio/Articles/Domaines/BIOMET/Bio...>

>
> > Le 17/07/2009 04:50, Zou Wilman a écrit :
>
> > 2d-pca is same with PCA?
>

> > On Fri, Jul 17, 2009 at 1:56 AM, jing wu <wujing...@gmail.com> wrote:
>
> >> Yeah, i knew this code but right now I need two-dimensional PCA which is
> >> different from original PCA.
>

> >> 2009/7/16 elkhiyarih <elkhiya...@gmail.com>

>
> >>> You should be able to find PCA implementations on Matlab Central.
> >>> Here's a link to PCA code for face recognition
>
> >>>http://www.mathworks.com/matlabcentral/fileexchange/17032
>
> >>> On Jul 15, 7:55 am, tumolas <wujing...@gmail.com> wrote:
> >>> > hello, everyone
>
> >>> > I am currently working on face recognition project and wanna implement
> >>> > it by using two-dimensional PCA, is there anyone who could be kind to
> >>> > provide matlab source code?
>
> >>> > Thanks a lot!
>
> > --
> > ---
> > WW ZOU
>
> --
> ---

> WW ZOU- Hide quoted text -
>
> - Show quoted text -

[loveisp]

maybe this can help you, http://www.image2003.com/code/open.asp?id=3508257
by the way, i don't think 2dpca is a promising way.

[tumolas]

thank u for sharing information.

On Jul 17, 5:01 pm, hulijo <vitost...@gmail.com> wrote:

> > - Show quoted text -- Hide quoted text -

[tumolas]

To loveisp:

which way do u think is more promising? I mean, like which method
could provide more recognition accuracy?

On Jul 17, 8:36 pm, loveisp <loveisp...@gmail.com> wrote:
> maybe this can help you,http://www.image2003.com/code/open.asp?id=3508257

> > > - Show quoted text -- Hide quoted text -

[loveisp]

in my opinion, LPP by xiaofei he and sparse representation by yi ma
are more promising.

[Jimmy]

I think 2D PCA only save some memory storage since its covariance
matrix is much smaller than conventional PCA, thus increase the speed.
So if you are familiar with PCA than it is not a problem to implement
a so-called 2D PCA.

Jimmy

[pchou...@gmail.com]

hey jimmy... have u got the code for 2 D pca ?

if yes please send it to me..

thanks in advance..

pchou...@gmail.com