#! /bin/csh -f 
# Last edited on 1999-03-17 07:10:36 by stolfi

cat vell1.pgm | pnmcut 0 0 128 128 > /tmp/v00.pgm
pnmcat -lr /tmp/v00.pgm /tmp/v00.pgm > /tmp/v0.pgm
pnmcat -tb /tmp/v0.pgm /tmp/v0.pgm > /tmp/v.pgm

cat /tmp/v.pgm | ppmbrighten -v -10 | ppmtopgm > /tmp/a.pgm
cat rings.pgm | ppmbrighten -v -90 | ppmtopgm > /tmp/b.pgm
pnmarith -add /tmp/a.pgm /tmp/b.pgm | pnmdepth 255 > frins.pgm

xv frins.pgm

/bin/rm -f /tmp/{v00,v0,v,a,b}.pgm