[gentoo-user] copy resize files with directories

[Joseph]

I've found this script that copy and resize file on the fly from one location to another. 

for INPUT in ./*.JPG; do OUTPUT=/media/stick/`echo $INPUT | sed 's/\.JPG/\_new\.JPG/'`; echo $INPUT /media/stick/$OUTPUT; convert $INPUT -scale 800x $OUTPUT; done

I go into each directory manually and run this command, however my camera was originally 
set to start the same file name every time I empty it so I have the same file name in may directories (the are not unique) so every time I run this script it re-writes 
the original one.

The ideal situation would be go into each directory and create the same director directory on the destination disk with modified files
Can anybody suggest how can I rewrite this script to copy files together with directory or change the file to a unique one.

I would like to span all directory I'm IN and bellow and run that script on any directory below.

-- 
Joseph