Re: Surveillance cameras

["Julian Samphire" <jules@xxxxxxx>]

Hi John,

I'm grabbing as quick as possible with 9% area change and 3 times change, 8
bit 10 value for pixel diff. I've set the 9% variation as it seemed to set
it off as the sun came up, probably as I'm detecting over a large area
using
a B&W cam, which was causing a lot of "noise" during slow
dark to light
change.

Its v.difficult if you have trees moving in the image etc, if you cant grab
quick enough from your cam. I am grabbing of a web based source (rather
than
usb etc) so its taking about 1/2 to 3/4 sec for an update, which then
causes
lots of change between images.

HTH

J
----- Original Message -----
From: "John Nye" <john@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Sunday, June 22, 2003 8:04 PM
Subject: [ukha_d] Surveillance cameras


> Hi,
>
> Using camsurveillance (http://www.camsurveillance.com)
with some cameras
attached to my MV1000 & trying to sort out an area to monitor for
motion.
Have tried lots of different areas to detect, different shapes and % areas
that have changed  but getting lots of spurious detections!
>
> Has anyone got this to work or anyone know any other software that I
should try??
>
> TIA
>
> John
>
> [Non-text portions of this message have been removed]
>
>
>
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