#! /bin/sh
#Motion detection script for use with AXIS 205 webcam.
#Written by David Bowler 5 Sep 2004
#Require packages:      
#                       netpbm ftp://metalab.unc.edu/pub/Linux/apps/graphics
# This script may be freely copied and modified

FRAMERATE=0.3
SENSITIVITY=32
PNMPSNR=/usr/bin/pnmpsnr

cd /tmp/vid
wget -q -m -N -nd -L -l2 -Y off --http-user=root --http-passwd=**** "http://192.168.29.46/jpg/image.jpg"
djpeg -scale 1/4 -ppm /tmp/vid/image.jpg > /tmp/vid/image2.ppm
while true
do
if [ ! -d /home/video/tea/`date +%m%d` ]
then
mkdir /home/video/tea/`date +%m%d`
fi

wget -q -m -N -nd -L -l2 -Y off --http-user=root --http-passwd=***** "http://192.168.29.46/jpg/image.jpg"

sleep $FRAMERATE

djpeg -scale 1/4 -ppm /tmp/vid/image.jpg > /tmp//vid/image.ppm
$PNMPSNR /tmp/vid/image.ppm /tmp/vid/image2.ppm>/tmp/vid/Ycolour 2>&1
Y=`/bin/awk '/Y  color/ {print int($5)}' /tmp/vid/Ycolour`
if [ $Y -lt $SENSITIVITY ]
then
cp /tmp/vid/image.jpg /home/video/tea/`date +%m%d`/`date +%m%d%H%M%S.jpg`
fi
mv /tmp/vid/image.ppm /tmp/vid/image2.ppm
done