blob detection background subtraction

Re: blob detection / background subtraction

On Sep 4, 1:58=A0pm, ImageAnalyst  wrote:
> On Sep 4, 3:42=A0am, roxlu  wrote:
>
> > Hi,
>
> > I'm working on a project where I want to create blobs of people
> > standing in front of a white wall. I'm thinking of this approach:
>
> > 1) background differencing using the current video frame and one which
> > is stored previously
> > 2) use opencv to detect blobs
> > 3) analyse the form of the blobs so I can detect hands and the face.
>
> > I'm using opencv for the background subtraction, but I'm really
> > satisfied with the results, therefore I was
> > hoping if someone knows a good technique to accomplish this?
>
> > Roxlu
>
> ------------------------------------------------------------
> Roxlu:
> If you're really satisfied with your results, then what else do you
> need? =A0Once I'm really satisfied, I release the program to my
> customers and move on to the next project. =A0Are you just interested in
> alternative approaches just out of curiosity to see what others are
> doing?
> Regards,
> ImageAnalyst

I think there exists the possibility that the word 'not' was
accidentally omitted, don't you?

illywhacker;

Re: blob detection / background subtraction

On Sep 4, 9:42=A0am, roxlu  wrote:
> Hi,
>
> I'm working on a project where I want to create blobs of people
> standing in front of a white wall. I'm thinking of this approach:
>
> 1) background differencing using the current video frame and one which
> is stored previously
> 2) use opencv to detect blobs
> 3) analyse the form of the blobs so I can detect hands and the face.
>
> I'm using opencv for the background subtraction, but I'm really
> satisfied with the results, therefore I was
> hoping if someone knows a good technique to accomplish this?
>
> Roxlu

Check out the work here:

http://www.mee.tcd.ie/~sigmedia/

The motion estimation algorithm is pretty much state of the art in
terms of working tools. You may have to impement it though :).

Illywhacker;