Differencing images?

[Scott Pobiner]

Hello All,

I am trying to difference one image from another using lingo.  Does 
anyone know if this is possible?  Similar to the way one can difference 
or subtract one layer form another in most image editing programs.

-- A little about what I am trying to do... I want to delete a very 
complex background from a live webcam feed so that I can save only the 
images of people moving through the space with a blank background.  I 
would use keying but the footage has to come from a live scene of 
public space (not controllable).  I would like to use lingo to do this 
because it is very difficult to manually lasso people out of 1000's of 
movie frames ;).

Any help would be much appreciated.

Best,

Scott

[To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/lingo-l.cgi  To post messages to the list, email [EMAIL PROTECTED]  (Problems, email [EMAIL PROTECTED]). Lingo-L is for learning and helping with programming Lingo.  Thanks!]