Re: PCA - What next!?

Yes. Check out the cvMahalanobis function, which calculates the
Mahalanobis distance between any two vectors.

Regards, :D
Paramesh.

--- In OpenCV@xxxxxxxxxxxxxxx, Fadi Chakik <fadichakik@...> wrote:
>
> Hi,
>    
>   >To recognize using the weights, you can use euclidean >distance,
> >Correlation distance, covariance distance, and many other >distances
> >available.
> 
>   Are these measures available inside OpenCV?
>    
>   -Fadi
> 
> Parameswaran <cegparamesh@...> wrote:
>   There are many available techniques for face recognition, which can be
> found in the face recognition homepage:
> www.face-rec.org
> 
> The simplest and best approach is PCA or eigenfaces approach, which
> can be used either to recognize, or to reduce the dimensionality.
> 
> To recognize using the weights, you can use euclidean distance,
> Correlation distance, covariance distance, and many other distances
> available.
> 
> TO save the bounding rectangle of a face, you have to set the Image
> Region of Interest(ROI) and save the image.
> After saving, reset the ROI.
> 
> Regards, :D
> Paramesh.
> 
> --- In OpenCV@xxxxxxxxxxxxxxx, "kirkl_tamworth" <kirkl_tamworth@>
> wrote:
> >
> > Hi all,
> > 
> > I have successfully compiled the PCA example provided in the files 
> > section, which outputs the eigenvalues and such. I have two queries:
> > 
> > 1. Can you help me with where I go from here to perform face-
> > recognition? I have 25 face images ready to use and would greatly 
> > appreciate some help with completing the Eigenface approach. 
> > 
> > 2. I have also managed to incorporate the face detection sample
into a 
> > C# application, but I'm not sure how to extract the face from the 
> > image, given that I know the bounding rectangle. Is there an OpenCV 
> > function that can do this for me?
> > 
> > My first query is much more important than the second and I would 
> > really, really appreciate some help with this. Thanks.
> > 
> > Kirk
> >
> 
> 
> 
> 
> 
> 
> Change settings: http://www.yahoogroups.com/mygroups, select
>    Get Emails (get all posts)
>    Daily Digest (one summary email per day)
>    Read on the web (read posts on the web only)Or Unsubscribe by
mailing OpenCV-unsubscribe@xxxxxxxxxxxxxxx
> 
> 
> 
>     
> ---------------------------------
>   YAHOO! GROUPS LINKS 
> 
>     
>     Visit your group "OpenCV" on the web.
>     
>     To unsubscribe from this group, send an email to:
>  OpenCV-unsubscribe@xxxxxxxxxxxxxxx
>     
>     Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service. 
> 
>     
> ---------------------------------
>   
> 
> 
> 
>               
> ---------------------------------
> New Yahoo! Messenger with Voice. Call regular phones from your PC
for low, low rates.
> 
> [Non-text portions of this message have been removed]
>







Change settings: http://www.yahoogroups.com/mygroups, select
   Get Emails (get all posts)
   Daily Digest (one summary email per day)
   Read on the web (read posts on the web only)Or Unsubscribe by mailing 
OpenCV-unsubscribe@xxxxxxxxxxxxxxx