| 1 |
#!/bin/csh -f |
| 2 |
# RCSid $Id: pbilat.csh,v 1.2 2008/08/25 04:50:32 greg Exp $ |
| 3 |
# |
| 4 |
# Bilateral Filter (fixed parameters for now) |
| 5 |
# |
| 6 |
set bfrac=0.02 |
| 7 |
set sigma=0.4 |
| 8 |
set vmin=1e-7 |
| 9 |
if ( $#argv != 1 ) then |
| 10 |
goto userr |
| 11 |
endif |
| 12 |
set inp="$1" |
| 13 |
set rad=`getinfo -d < $inp:q | rcalc -i '-Y ${yr} +X ${xr}' -e '$1=sqrt(xr*yr)*'$bfrac` |
| 14 |
set extrem=`pextrem -o $inp:q | rcalc -e "vmin:$vmin" -e 'max(a,b):if(a-b,a,b);$1=max($3*.265+$4*.670+$5*.065,vmin)'` |
| 15 |
set nseg=`ev "ceil(log10($extrem[2]/$extrem[1])/$sigma)"` |
| 16 |
if ( $nseg > 20 ) set nseg=20 |
| 17 |
onintr done |
| 18 |
set tdir=`mktemp -d /tmp/blf.XXXXXX` |
| 19 |
set gfunc="sq(x):x*x;gfunc(x):if(sq(x)-sq($sigma),0,sq(1-sq(x/$sigma)))" |
| 20 |
set i=0 |
| 21 |
set imglist=() |
| 22 |
while ( $i <= $nseg ) |
| 23 |
set intens=`ev "$extrem[1]*($extrem[2]/$extrem[1])^($i/$nseg)"` |
| 24 |
pcomb -e $gfunc:q -e "vmin:$vmin" \ |
| 25 |
-e 'max(a,b):if(a-b,a,b);l1=max(li(1),vmin)' \ |
| 26 |
-e "lo=gfunc(log10(l1)-log10($intens))" \ |
| 27 |
-o $inp > $tdir/gimg.hdr |
| 28 |
pcomb -e 'sf=gi(2);ro=sf*ri(1);go=sf*gi(1);bo=sf*bi(1)' \ |
| 29 |
-o $inp $tdir/gimg.hdr > $tdir/g_p.hdr |
| 30 |
pgblur -r $rad $tdir/g_p.hdr \ |
| 31 |
| pcomb -e 'sf=if(gi(2)-1e-6,1/gi(2),1e6)' \ |
| 32 |
-e 'ro=sf*ri(1);go=sf*gi(1);bo=sf*bi(1)' \ |
| 33 |
- "\!pgblur -r $rad $tdir/gimg.hdr" \ |
| 34 |
> $tdir/gimg$i.hdr |
| 35 |
set imglist=($imglist $tdir/gimg$i.hdr) |
| 36 |
@ i++ |
| 37 |
end |
| 38 |
cat > $tdir/interp.cal << _EOF_ |
| 39 |
{ Segmented intensity image interpolation } |
| 40 |
max(a,b) : if(a-b, a, b); |
| 41 |
NSEG : $nseg; |
| 42 |
l1 = max(li(1), $vmin); |
| 43 |
val = NSEG / log($extrem[2]/$extrem[1]) * (log(l1) - log($extrem[1])); |
| 44 |
iv = floor(val); |
| 45 |
ival = if(iv - (NSEG-1), NSEG-1, max(iv, 0)); |
| 46 |
xval = val - ival; |
| 47 |
ro = (1-xval)*ri(ival+2) + xval*ri(ival+3); |
| 48 |
go = (1-xval)*gi(ival+2) + xval*gi(ival+3); |
| 49 |
bo = (1-xval)*bi(ival+2) + xval*bi(ival+3); |
| 50 |
_EOF_ |
| 51 |
pcomb -h -f $tdir/interp.cal -o $inp:q $imglist |
| 52 |
done: |
| 53 |
rm -rf $tdir |
| 54 |
exit 0 |
| 55 |
userr: |
| 56 |
echo Usage: $0 input.hdr |
