At 17:30 05/04/99 PDT, you wrote:
>Does anyone know if there is such a frame grabber available that
>supports direct accessing of the pixel intensity using C or other
>languages?

We've used, and been very pleased with, Imagenation cards-

http://www.imagenation.com

The only other one we've considered, for cost alone, is the Hauppage type
of WinTV card, but it seems that you are on your own in finding the
software or libraries to support it- the Imagenation came with C libraries
to do most tasks (grabbing, transferring lines around memory, adding and
subtracting frames, and even some 3x3 and 5x5 filtering!)

Nigel