Picture Server Storing Millions of jpg's!

[Shawn]

On Thu, 3 Jan 2008 08:27:58 -0500
Jerry McBride <mcbrides9 at comcast.net> wrote:


> Since this is bash, it is easily hacked to fit your needs... by
> having it weed/loop through the pictures in your holding directory
> and saving the ones of substantial difference to a different
> directory. I'll leave the necessary hacking to you.
> 
> Good luck and have fun. 
> 
> Caution: Indentation has been compressed out to try to eliminate word
> wrap.
> 
> #!/bin/bash
> #
> #Uses tools from media-video/w3cam, media-libs/jpeg and
> media-libs/netpbm #
> 
> #RESOLUTION=320x240
> DEVICE=/dev/video0
> #FRATE=1
> SENSITIVITY=35
> 
> echo "Setting up"
> mkdir /motion
> mkdir /motion/pics
> cd /motion
> # cleanup
> rm /motion/image.jpg
> # take a snapshop
> vidcat -q 100 -d $DEVICE -f jpeg -o /motion/image.jpg
> #cleanup
> rm /motion/image.ppm
> #decompress image
> djpeg -scale 1/4 -pnm /motion/image.jpg > /motion/image.ppm
> 
> #one big endless loop...
> while true
> do
> 
> echo "Taking a picture"
> #cleanup
> rm /motion/image2.jpg
> #take a snapshot
> vidcat -q 100 -d $DEVICE -f jpeg -o /motion/image2.jpg
> #cleanup
> rm /motion/image2.ppm
> #decompress image2
> djpeg -scale 1/4 -pnm /motion/image2.jpg > /motion/image2.ppm
> #get the current date and time
> date>/Ycolour
> #compare the signal-to-noise ratio of the two uncompressed images
> pnmpsnr /motion/image.ppm /motion/image2.ppm >> /Ycolour 2>&1
> 
> #snip out the data that what we want
> Y=`awk '/Y  color component/ {print int($5)}' /Ycolour`
> #show it
> echo $Y
> #if there's sufficient difference then brand and save image2
> if [ $Y -lt $SENSITIVITY ]
> then 
> cp /motion/image2.jpg /motion/pics/`date +%m%d%H%M%S.jpg`
> echo "Motion detected"
> fi
> #use uncompressed image2 for base of next comparison
> mv /motion/image2.ppm /motion/image.ppm
> #do it again
> done
> #we will never reach this exit...
> exit
> 
> --

Wow Guys Thanks!!

Between this and Kurt's script I think I am well on my way

Now I just need to get a few minutes to actually play!  Ugh!!!!  

BTW, 8in of snow in the front yard since 4PM here and its still coming
down, golf ball size flakes!

Shawn