| 36 |
|
else |
| 37 |
|
mknod $td/hf p |
| 38 |
|
endif |
| 39 |
+ |
cat > $td/coef.fmt << '_EOF_' |
| 40 |
+ |
rcx=${ $1 }; rcy=${ $2 }; rsx=${ $3 }; rsy=${ $4 }; |
| 41 |
+ |
rcxcy=${ $5 }; rcxsy=${ $6 }; rsxcy=${ $7 }; rsxsy=${ $8 }; |
| 42 |
+ |
gcx=${ $9 }; gcy=${ $10 }; gsx=${ $11 }; gsy=${ $12 }; |
| 43 |
+ |
gcxcy=${ $13 }; gcxsy=${ $14 }; gsxcy=${ $15 }; gsxsy=${ $16 }; |
| 44 |
+ |
bcx=${ $17 }; bcy=${ $18 }; bsx=${ $19 }; bsy=${ $20 }; |
| 45 |
+ |
bcxcy=${ $21 }; bcxsy=${ $22 }; bsxcy=${ $23 }; bsxsy=${ $24 }; |
| 46 |
+ |
'_EOF_' |
| 47 |
+ |
cat > $td/coef.cal << '_EOF_' |
| 48 |
+ |
$1=$3*2*cx; $2=$3*2*cy; $3=$3*2*sx; $4=$3*2*sy; |
| 49 |
+ |
$5=$3*4*cx*cy; $6=$3*4*cx*sy; $7=$3*4*sx*cy; $8=$3*4*sx*sy; |
| 50 |
+ |
$9=$4*2*cx; $10=$4*2*cy; $11=$4*2*sx; $12=$4*2*sy; |
| 51 |
+ |
$13=$4*4*cx*cy; $14=$4*4*cx*sy; $15=$4*4*sx*cy; $16=$4*4*sx*sy; |
| 52 |
+ |
$17=$5*2*cx; $18=$5*2*cy; $19=$5*2*sx; $20=$5*2*sy; |
| 53 |
+ |
$21=$5*4*cx*cy; $22=$5*4*cx*sy; $23=$5*4*sx*cy; $24=$5*4*sx*sy; |
| 54 |
+ |
cx=cos(wx); cy=cos(wy); |
| 55 |
+ |
sx=sin(wx); sy=sin(wy); |
| 56 |
+ |
wx=2*PI*($1+.5)/xres; wy=2*PI*($2+.5)/yres; |
| 57 |
+ |
'_EOF_' |
| 58 |
+ |
cat > $td/fsub.cal << '_EOF_' |
| 59 |
+ |
ro=ri(1)-rcx*cx-rcy*cy-rsx*sx-rsy*sy |
| 60 |
+ |
-rcxcy*cx*cy-rcxsy*cx*sy-rsxcy*sx*cy-rsxsy*sx*sy; |
| 61 |
+ |
go=gi(1)-gcx*cx-gcy*cy-gsx*sx-gsy*sy |
| 62 |
+ |
-gcxcy*cx*cy-gcxsy*cx*sy-gsxcy*sx*cy-gsxsy*sx*sy; |
| 63 |
+ |
bo=bi(1)-bcx*cx-bcy*cy-bsx*sx-bsy*sy |
| 64 |
+ |
-bcxcy*cx*cy-bcxsy*cx*sy-bsxcy*sx*cy-bsxsy*sx*sy; |
| 65 |
+ |
cx=cos(wx); cy=cos(wy); |
| 66 |
+ |
sx=sin(wx); sy=sin(wy); |
| 67 |
+ |
wx=2*PI*(x+.5)/xres; wy=2*PI*(y+.5)/yres; |
| 68 |
+ |
PI=3.14159265358979323846; |
| 69 |
+ |
'_EOF_' |
| 70 |
|
foreach f ($*) |
| 71 |
|
if ( $?verb ) then |
| 72 |
|
echo $f\: |
| 85 |
|
if ( $?verb ) then |
| 86 |
|
echo computing Fourier coefficients... |
| 87 |
|
endif |
| 88 |
< |
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` |
| 88 |
> |
pfilt -1 -x 32 -y 32 $td/pf | pvalue -h \ |
| 89 |
> |
| rcalc -f $td/coef.cal -e 'xres=32;yres=32' \ |
| 90 |
> |
| total -m | rcalc -o $td/coef.fmt \ |
| 91 |
> |
> $td/coef |
| 92 |
|
if ( $?verb ) then |
| 93 |
< |
echo "cosx cosy sinx siny" |
| 60 |
< |
echo $coef[1-4] |
| 61 |
< |
echo "cosx*cosy cosx*siny sinx*cosy sinx*siny" |
| 62 |
< |
echo $coef[5-8] |
| 93 |
> |
cat $td/coef |
| 94 |
|
echo removing low frequencies... |
| 95 |
|
endif |
| 96 |
|
if ( ! $?blend ) then |
| 97 |
|
( getinfo - < $td/hf >> $f & ) > /dev/null |
| 98 |
|
endif |
| 99 |
< |
pcomb -e 'ro=f*ri(1);go=f*gi(1);bo=f*bi(1);f=(i-fc-fs-f0-f1)/i' \ |
| 100 |
< |
-e 'i=.263*ri(1)+.655*gi(1)+.082*bi(1)' \ |
| 70 |
< |
-e "fc=$coef[1]*cos(wx)+$coef[2]*cos(wy)" \ |
| 71 |
< |
-e "fs=$coef[3]*sin(wx)+$coef[4]*sin(wy)" \ |
| 72 |
< |
-e "f0=$coef[5]*cos(wx)*cos(wy)+$coef[6]*cos(wx)*sin(wy)" \ |
| 73 |
< |
-e "f1=$coef[7]*sin(wx)*cos(wy)+$coef[8]*sin(wx)*sin(wy)" \ |
| 74 |
< |
-e "wx=2*3.1416/$resolu[1]*x;wy=2*3.1416/$resolu[2]*y" \ |
| 99 |
> |
pcomb -f $td/fsub.cal -f $td/coef \ |
| 100 |
> |
-e "xres=$resolu[1];yres=$resolu[2]" \ |
| 101 |
|
$td/pf > $td/hf |
| 102 |
|
if ( $?blend ) then |
| 103 |
|
if ( $?verb ) then |
