Shell Programming and Scripting

Hi guys,

Those who work with Background Oriented Schlieren (BOS) might wonder how to create image pairs suitable for a PIV image processing software.
Here is the code :

Code:

#!/bin/bash

# This is a program to read *.jpg  files and save them in pairs for postprocessing

nfiles=`ls -1 bild* | wc -l`;
f=`expr $nfiles `
filename=background.JPG;
i=1;
while [ $i -le $f ]
do
cp $filename b$i.JPG
i=$((i+1))
done
echo "Base pictures created !"

for i in bild*; do
   mv $i `echo $i| sed 's/^[a-zA-Z]\+0*/c/g'`
done
echo "Cross pictures created !"

This code copies the image "background.JPG" as many number of times as the occurrence of "bild*.JPG" and renames them as b1.JPG, b2.JPG etc.
Then it looks for the bild*.JPG files and renames them as c1.JPG,c2.JPG etc.

Hope it helps many
Cheers,

CJ

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