| 1 |
#!/bin/csh -f |
| 2 |
# SCCSid "$SunId$ LBL" |
| 3 |
# |
| 4 |
# Normalize a pattern for tiling (-b option blends edges) by removing |
| 5 |
# lowest frequencies from image and reducing to standard size (-r option) |
| 6 |
# |
| 7 |
set pf="pfilt -e 2" |
| 8 |
while ($#argv > 0) |
| 9 |
switch ($argv[1]) |
| 10 |
case -r: |
| 11 |
shift argv |
| 12 |
set pf="$pf -x $argv[1] -y $argv[1] -p 1" |
| 13 |
breaksw |
| 14 |
case -b: |
| 15 |
set blend |
| 16 |
breaksw |
| 17 |
case -*: |
| 18 |
echo bad option $argv[1] |
| 19 |
exit 1 |
| 20 |
default: |
| 21 |
goto dofiles |
| 22 |
endsw |
| 23 |
shift argv |
| 24 |
end |
| 25 |
dofiles: |
| 26 |
onintr quit |
| 27 |
set td=/usr/tmp/np$$ |
| 28 |
mkdir $td |
| 29 |
set ha=$0 |
| 30 |
set ha=$ha:t |
| 31 |
if ( $?blend ) then |
| 32 |
set ha="$ha -b" |
| 33 |
else |
| 34 |
mknod $td/hf p |
| 35 |
endif |
| 36 |
foreach f ($*) |
| 37 |
echo $f\: |
| 38 |
echo adjusting size/exposure... |
| 39 |
$pf $f > $td/pf |
| 40 |
getinfo < $td/pf > $f |
| 41 |
ed - $f << _EOF_ |
| 42 |
i |
| 43 |
$ha |
| 44 |
. |
| 45 |
w |
| 46 |
q |
| 47 |
_EOF_ |
| 48 |
if ( ! $?blend ) then |
| 49 |
getinfo - < $td/hf >> $f & |
| 50 |
endif |
| 51 |
set resolu=`getinfo -d < $td/pf | sed 's/-Y \([0-9]*\) +X \([0-9]*\)/\2 \1/'` |
| 52 |
echo computing Fourier coefficients... |
| 53 |
set coef=`pfilt -1 -x 32 -y 32 $td/pf | pvalue -h -b | rcalc -e '$1=2*$3*cos(wx);$2=2*$3*cos(wy);$3=2*$3*sin(wx);$4=2*$3*sin(wy);$5=4*$3*cos(wx)*cos(wy);$6=4*$3*cos(wx)*sin(wy);$7=4*$3*sin(wx)*cos(wy);$8=4*$3*sin(wx)*sin(wy);' -e 'wx=2*PI/32*$1;wy=2*PI/32*$2' | total -m` |
| 54 |
echo "cosx cosy sinx siny" |
| 55 |
echo $coef[1-4] |
| 56 |
echo "cosx*cosy cosx*siny sinx*cosy sinx*siny" |
| 57 |
echo $coef[5-8] |
| 58 |
echo removing low frequencies... |
| 59 |
pcomb -e 'ro=ri(1)*f;go=gi(1)*f;bo=bi(1)*f;f=1-fc-fs-f0-f1' \ |
| 60 |
-e "fc=$coef[1]*cos(wx)+$coef[2]*cos(wy)" \ |
| 61 |
-e "fs=$coef[3]*sin(wx)+$coef[4]*sin(wy)" \ |
| 62 |
-e "f0=$coef[5]*cos(wx)*cos(wy)+$coef[6]*cos(wx)*sin(wy)" \ |
| 63 |
-e "f1=$coef[7]*sin(wx)*cos(wy)+$coef[8]*sin(wx)*sin(wy)" \ |
| 64 |
-e "wx=2*3.1416/$resolu[1]*x;wy=2*3.1416/$resolu[2]*y" \ |
| 65 |
$td/pf > $td/hf |
| 66 |
if ( $?blend ) then |
| 67 |
echo blending edges... |
| 68 |
@ mar= $resolu[1] - 3 |
| 69 |
pcompos -x 3 $td/hf 0 0 > $td/left |
| 70 |
pcompos $td/hf -$mar 0 > $td/right |
| 71 |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 72 |
-e 'f(p)=(3-x)/7*p(1)+(4+x)/7*p(2)' \ |
| 73 |
$td/right $td/left > $td/left.patch |
| 74 |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 75 |
-e 'f(p)=(1+x)/7*p(1)+(6-x)/7*p(2)' \ |
| 76 |
$td/left $td/right > $td/right.patch |
| 77 |
pcompos $td/hf 0 0 $td/left.patch 0 0 $td/right.patch $mar 0 \ |
| 78 |
> $td/hflr |
| 79 |
@ mar= $resolu[2] - 3 |
| 80 |
pcompos -y 3 $td/hflr 0 0 > $td/bottom |
| 81 |
pcompos $td/hflr 0 -$mar > $td/top |
| 82 |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 83 |
-e 'f(p)=(3-y)/7*p(1)+(4+y)/7*p(2)' \ |
| 84 |
$td/top $td/bottom > $td/bottom.patch |
| 85 |
pcomb -e 'ro=f(ri);go=f(gi);bo=f(bi)' \ |
| 86 |
-e 'f(p)=(1+y)/7*p(1)+(6-y)/7*p(2)' \ |
| 87 |
$td/bottom $td/top > $td/top.patch |
| 88 |
pcompos $td/hflr 0 0 $td/bottom.patch 0 0 $td/top.patch 0 $mar \ |
| 89 |
| getinfo - >> $f |
| 90 |
endif |
| 91 |
echo $f done. |
| 92 |
end |
| 93 |
quit: |
| 94 |
rm -rf $td |
