Hazelwood Lyle wrote:
>
> Hi All,
> I have watched many topics through this list, and
> I'm often amazed at what people are doing with PIC's.
>
> I have wondered more than once if a PIC could be
> used for video signal motion detection. I assume
> that a sync separator and NTSC(or PAL) to RGB conversion
> would be handled by dedicated chips, but could
> a PIC go from the resulting RGB signals to
> some kind of motion detector output?
>
> I understand that this is most often done in
> PC's by keeping a copy of the previous video frame,


Even doing this with minimum speed PIC and very little
ram is possible, average the video per line into an
RC filter, then into the PIC analogue input and do one
sample per video line. You only need one ram unit per
line, or less if you share the ram and do some lines
each frame. I also suggest turning the camera 90'
(sideways) so movement (walking for instance) is from
one line to the next rather than across a line.
Seems like a very do-able proposition for a cheap
camera and any analogue PIC. :o)
-Roman

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body