frame subtraction

[mat84]

Hi everybody-

I have an AVI file and I have to subtract two consecutives frame and repeat this operation for every frame of the avi file.
I met some problems, I think due to the IMAQcreate that I used like a buffer and the image that I passed through shift register in the while loop from a frame to the next one.

what do you think about?
thanks
Mattia 

[mat84]

ok, I`m sorry, I resolved the problem looking a previously post!
Mattia

[mat84]

this is the post:
http://forums.ni.com/ni/board/message?board.id=200&message.id=10658&query.id=74094#M10658