you can (or could) get low resolution 256 gray shade (1 byte),
256 * 256 or 512 x 512 video capture boards for IBM (pre-windows)
for $200-$400. Look at the back of PC magazine. They typically
would capture an image in 1/60 second, and the image could be
saved for further analysis. Depending on your intent, you might
need C or assembly to do an analysis in less than 20 seconds.
If you need color or high resolution, those boards cost a lot more.
Macintosh should have something equivalent.
In article <3r65ku$ric at mserv1.dl.ac.uk> FLIES at myia.imbb.forth.gr writes:
>This is a question for the computer buffs among the drosophilists. We at the
>IMBB want to hook an old (but perfectly working) Mac IIx to our video display
>so that we can get microscope images stored directly in the computer for
>further processing. Our local Apple dealer says that the cheapest video
>grabbing card that he could find costs the equivalent of 4000 US$. Obviously
>for this price one can buy a new computer that can do this without further
>add-ons (e.g. AV). Does anyone of you have any experience with such a matter,
>and if yes (and cheaper!), could we have some advice?
>Thanks in advance,