normpat
#!/bin/csh -f
# SCCSid "@(#)normpat.csh 2.3 6/2/93 LBL"
#
# Normalize a pattern for tiling (-b option blends edges) by removing
# lowest frequencies from image (-f option) and reducing to
# standard size (-r option)
#
set ha=$0
set ha=$ha:t
set pf="pfilt -e 2"
while ($#argv > 0)
switch ($argv[1])
case -r:
shift argv
set pf="$pf -x $argv[1] -y $argv[1] -p 1 -r .67"
breaksw
case -f:
set ha="$ha -f"
set dofsub
breaksw
case -b:
set ha="$ha -b"
set blend
breaksw
case -v:
set verb
breaksw
case -*:
echo bad option $argv[1]
exit 1
default:
goto dofiles
endsw
shift argv
end
dofiles:
onintr quit
set td=/usr/tmp/np$$
mkdir $td
cat > $td/coef.fmt << '_EOF_'
rm:${ $25 }; gm:${ $26 }; bm:${ $27 };
rcx:${ $1 }; gcx:${ $9 }; bcx:${ $17 };
rcy:${ $2 }; gcy:${ $10 }; bcy:${ $18 };
rsx:${ $3 }; gsx:${ $11 }; bsx:${ $19 };
rsy:${ $4 }; gsy:${ $12 }; bsy:${ $20 };
rcxcy:${ $5 }; gcxcy:${ $13 }; bcxcy:${ $21 };
rcxsy:${ $6 }; gcxsy:${ $14 }; bcxsy:${ $22 };
rsxcy:${ $7 }; gsxcy:${ $15 }; bsxcy:${ $23 };
rsxsy:${ $8 }; gsxsy:${ $16 }; bsxsy:${ $24 };
'_EOF_'
cat > $td/coef.cal << '_EOF_'
$1=$3*2*cx; $2=$3*2*cy; $3=$3*2*sx; $4=$3*2*sy;
$5=$3*4*cx*cy; $6=$3*4*cx*sy; $7=$3*4*sx*cy; $8=$3*4*sx*sy;
$9=$4*2*cx; $10=$4*2*cy; $11=$4*2*sx; $12=$4*2*sy;
$13=$4*4*cx*cy; $14=$4*4*cx*sy; $15=$4*4*sx*cy; $16=$4*4*sx*sy;
$17=$5*2*cx; $18=$5*2*cy; $19=$5*2*sx; $20=$5*2*sy;
$21=$5*4*cx*cy; $22=$5*4*cx*sy; $23=$5*4*sx*cy; $24=$5*4*sx*sy;
$25=$3; $26=$4; $27=$5;
cx=cos(wx); cy=cos(wy);
sx=sin(wx); sy=sin(wy);
wx=2*PI/xres*($1+.5); wy=2*PI/yres*($2+.5);
'_EOF_'
cat > $td/fsub.cal << '_EOF_'
PI:3.14159265358979323846;
ro=ri(1)*rm/(rm+rcx*cx+rcy*cy+rsx*sx+rsy*sy
+rcxcy*cx*cy+rcxsy*cx*sy+rsxcy*sx*cy+rsxsy*sx*sy);
go=gi(1)*gm/(gm+gcx*cx+gcy*cy+gsx*sx+gsy*sy
+gcxcy*cx*cy+gcxsy*cx*sy+gsxcy*sx*cy+gsxsy*sx*sy);
bo=bi(1)*bm/(bm+bcx*cx+bcy*cy+bsx*sx+bsy*sy
+bcxcy*cx*cy+bcxsy*cx*sy+bsxcy*sx*cy+bsxsy*sx*sy);
cx=cos(wx); cy=cos(wy);
sx=sin(wx); sy=sin(wy);
wx=2*PI/xres*(x+.5); wy=2*PI/yres*(y+.5);
'_EOF_'
foreach f ($*)
if ( $?verb ) then
echo $f\:
echo adjusting exposure/size...
endif
$pf $f > $td/pf
getinfo < $td/pf > $f
ed - $f << _EOF_
i
$ha
.
w
q
_EOF_
set resolu=`getinfo -d < $td/pf | sed 's/-Y \([0-9]*\) +X \([0-9]*\)/\2 \1/'`
if ( ! $?dofsub ) then
mv $td/pf $td/hf
goto donefsub
endif
if ( $?verb ) then
echo computing Fourier coefficients...
endif
pfilt -1 -x 32 -y 32 $td/pf | pvalue -h \
| rcalc -e 'xres:32;yres:32' -f $td/coef.cal \
| total -m | rcalc -o $td/coef.fmt \
> $td/coef
if ( $?verb ) then
cat $td/coef
echo removing low frequencies...
endif
pcomb -f $td/coef -f $td/fsub.cal $td/pf > $td/hf
donefsub:
if ( $?blend ) then
if ( $?verb ) then
echo blending edges...
endif
@ mar= $resolu[1] - 3
@ les= $resolu[1] - 1
pcompos -x 1 $td/hf 0 0 | pfilt -1 -x 3 > $td/left
pcompos $td/hf -$les 0 | pfilt -1 -x 3 > $td/right
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
-e 'f(p)=(3-x)/7*p(1)+(4+x)/7*p(2)' \
$td/right $td/left > $td/left.patch
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
-e 'f(p)=(1+x)/7*p(1)+(6-x)/7*p(2)' \
$td/left $td/right > $td/right.patch
pcompos $td/hf 0 0 $td/left.patch 0 0 $td/right.patch $mar 0 \
> $td/hflr
@ mar= $resolu[2] - 3
@ les= $resolu[2] - 1
pcompos -y 1 $td/hflr 0 0 | pfilt -1 -y 3 > $td/bottom
pcompos $td/hflr 0 -$les | pfilt -1 -y 3 > $td/top
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
-e 'f(p)=(3-y)/7*p(1)+(4+y)/7*p(2)' \
$td/top $td/bottom > $td/bottom.patch
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \
-e 'f(p)=(1+y)/7*p(1)+(6-y)/7*p(2)' \
$td/bottom $td/top > $td/top.patch
pcompos $td/hflr 0 0 $td/bottom.patch 0 0 $td/top.patch 0 $mar \
| getinfo - >> $f
else
getinfo - < $td/hf >> $f
endif
if ( $?verb ) then
echo $f done.
endif
end
quit:
rm -rf $td
by
admin
– last modified
Nov 09, 2019 09:22 AM