[Numpy-discussion] eigenvector and eigenface

[Peter Skomoroch]

see this page I found in my del.icio.us links, sorry I forgot to mention it
at the time of the thread:

http://www.owlnet.rice.edu/~elec301/Projects99/faces/code.html

All the best

On Mon, Mar 10, 2008 at 1:37 AM, royG <roygeorget at gmail.com> wrote:

> friends
> I am learning eigenfaces using numpy . i use data from N images and
> create eigenvectors to  get a 'sorted eigenvectors' array of size N X
> N. when i project the 'zero mean imagedata' i will get a facespace
> array of N X numpixels. (where numpixels is total pixels in one image)
>
> is eigenface the same as eigenvector? some of the docs i
> read(pissarenko-Eigenface-based facial recognition), use these two
> words to mean the same thing..but when i look at the dimensions of
> 'sorted eigenvectors' array
> it is only NXN and i don't know how i can make  images out of it
> representing eigenfaces.
>
> on the other hand the projection of 'zero mean imagedata' on
> eigenvectors by using numpy.dot(eigenvectors,zeromeanimagedata) can
> make an array of N X numpixels
>  .I believe this is what is known as the facespace .is this what
> represents the eigenface images ?
>
> will be thankful for any expert opinion on this..
> RG
> _______________________________________________
> Numpy-discussion mailing list
> Numpy-discussion at scipy.org
> http://projects.scipy.org/mailman/listinfo/numpy-discussion
>



-- 
Peter N. Skomoroch
peter.skomoroch at gmail.com
http://www.datawrangling.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20080311/05b6a476/attachment.html>