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#!/usr/bin/perl -w |
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# RCSid $Id: falsecolor.pl,v 2.5 2011/10/26 03:42:49 greg Exp $ |
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|
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use warnings; |
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use strict; |
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use File::Temp qw/ tempdir /; |
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use POSIX qw/ floor /; |
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|
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my @palettes = ('def', 'spec', 'pm3d', 'hot'); |
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|
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my $mult = 179.0; # Multiplier. Default W/sr/m2 -> cd/m2 |
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my $label = 'cd/m2'; # Units shown in legend |
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my $scale = 1000; # Top of the scale |
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my $decades = 0; # Default is linear mapping |
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my $pal = 'def'; # Palette |
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my $redv = "${pal}_red(v)"; # Mapping functions for R,G,B |
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my $grnv = "${pal}_grn(v)"; |
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my $bluv = "${pal}_blu(v)"; |
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my $ndivs = 8; # Number of lines in legend |
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my $picture = '-'; |
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my $cpict = ''; |
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my $legwidth = 100; # Legend width and height |
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my $legheight = 200; |
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my $docont = ''; # Contours: -cl and -cb |
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my $doposter = 0; # Posterization: -cp |
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my $loff = 0; # Offset to align with values |
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my $doextrem = 0; # Don't mark extrema |
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my $needfile = 0; |
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my $showpal = 0; # Show availabel colour palettes |
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|
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while ($#ARGV >= 0) { |
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$_ = shift; |
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# Options with qualifiers |
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if (m/-lw/) { # Legend width |
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$legwidth = shift; |
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} elsif (m/-lh/) { # Legend height |
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$legheight = shift; |
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} elsif (m/-m/) { # Multiplier |
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$mult = shift; |
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} elsif (m/-s/) { # Scale |
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$scale = shift; |
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if ($scale =~ m/[aA].*/) { |
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$needfile = 1; |
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} |
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} elsif (m/-l$/) { # Label |
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$label = shift; |
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} elsif (m/-log/) { # Logarithmic mapping |
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$decades = shift; |
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} elsif (m/-r/) { # Custom palette functions for R,G,B |
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$redv = shift; |
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} elsif (m/-g/) { |
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$grnv = shift; |
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} elsif (m/-b/) { |
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$bluv = shift; |
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} elsif (m/-pal$/) { # Color palette |
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$pal = shift; |
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if (! grep $_ eq $pal, @palettes) { |
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die("invalid palette '$pal'.\n"); |
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} |
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$redv = "${pal}_red(v)"; |
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$grnv = "${pal}_grn(v)"; |
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$bluv = "${pal}_blu(v)"; |
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} elsif (m/-i$/) { # Image for intensity mapping |
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$picture = shift; |
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} elsif (m/-p$/) { # Image for background |
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$cpict = shift; |
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} elsif (m/-ip/ || m/-pi/) { |
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$picture = shift; |
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$cpict = $picture; |
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} elsif (m/-n/) { # Number of contour lines |
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$ndivs = shift; |
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|
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# Switches |
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} elsif (m/-cl/) { # Contour lines |
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$docont = 'a'; |
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$loff = 0.48; |
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} elsif (m/-cb/) { # Contour bands |
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$docont = 'b'; |
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$loff = 0.52; |
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} elsif (m/-cp/) { # Posterize |
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$doposter = 1; |
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} elsif (m/-palettes/) { # Show all available palettes |
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$scale = 45824; # 256 * 179 |
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$showpal = 1; |
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} elsif (m/-e/) { |
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$doextrem = 1; |
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$needfile = 1; |
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|
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# Oops! Illegal option |
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} else { |
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die("bad option \"$_\"\n"); |
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} |
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} |
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|
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# Temporary directory. Will be removed upon successful program exit. |
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my $td = tempdir( CLEANUP => 1 ); |
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|
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if ($needfile == 1 && $picture eq '-') { |
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# Pretend that $td/stdin.rad is the actual filename. |
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$picture = "$td/stdin.hdr"; |
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open(FHpic, ">$picture") or |
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die("Unable to write to file $picture\n"); |
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# Input is from STDIN: Capture to file. |
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while (<>) { |
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print FHpic; |
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} |
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close(FHpic); |
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|
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if ($cpict eq '-') { |
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$cpict = "$td/stdin.hdr"; |
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} |
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} |
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|
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# Find a good scale for auto mode. |
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if ($scale =~ m/[aA].*/) { |
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my @histo = split(/\s/, `phisto $picture| tail -2`); |
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# e.g. $ phisto tests/richmond.hdr| tail -2 |
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# 3.91267 14 |
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# 3.94282 6 |
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my $LogLmax = $histo[0]; |
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$scale = $mult / 179 * 10**$LogLmax; |
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} |
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|
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my $pc0 = "$td/pc0.cal"; |
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open(FHpc0, ">$pc0"); |
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print FHpc0 <<EndOfPC0; |
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PI : 3.14159265358979323846 ; |
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scale : $scale ; |
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mult : $mult ; |
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ndivs : $ndivs ; |
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gamma : 2.2; |
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|
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or(a,b) : if(a,a,b); |
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EPS : 1e-7; |
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neq(a,b) : if(a-b-EPS,1,b-a-EPS); |
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btwn(a,x,b) : if(a-x,-1,b-x); |
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clip(x) : if(x-1,1,if(x,x,0)); |
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frac(x) : x - floor(x); |
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boundary(a,b) : neq(floor(ndivs*a+.5),floor(ndivs*b+.5)); |
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|
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spec_red(x) = 1.6*x - .6; |
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spec_grn(x) = if(x-.375, 1.6-1.6*x, 8/3*x); |
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spec_blu(x) = 1 - 8/3*x; |
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|
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pm3d_red(x) = sqrt(x) ^ gamma; |
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pm3d_grn(x) = (x*x*x) ^ gamma; |
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pm3d_blu(x) = clip(sin(2*PI*clip(x))) ^ gamma; |
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|
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hot_red(x) = clip(3*x) ^ gamma; |
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hot_grn(x) = clip(3*x - 1) ^ gamma; |
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hot_blu(x) = clip(3*x - 2) ^ gamma; |
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|
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interp_arr2(i,x,f):(i+1-x)*f(i)+(x-i)*f(i+1); |
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interp_arr(x,f):if(x-1,if(f(0)-x,interp_arr2(floor(x),x,f),f(f(0))),f(1)); |
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|
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def_redp(i):select(i,0.18848,0.05468174, |
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0.00103547,8.311144e-08,7.449763e-06,0.0004390987,0.001367254, |
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0.003076,0.01376382,0.06170773,0.1739422,0.2881156,0.3299725, |
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0.3552663,0.372552,0.3921184,0.4363976,0.6102754,0.7757267, |
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0.9087369,1,1,0.9863); |
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def_red(x):interp_arr(x/0.0454545+1,def_redp); |
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|
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def_grnp(i):select(i,0.0009766,2.35501e-05, |
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0.0008966244,0.0264977,0.1256843,0.2865799,0.4247083,0.4739468, |
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0.4402732,0.3671876,0.2629843,0.1725325,0.1206819,0.07316644, |
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0.03761026,0.01612362,0.004773749,6.830967e-06,0.00803605, |
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0.1008085,0.3106831,0.6447838,0.9707); |
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def_grn(x):interp_arr(x/0.0454545+1,def_grnp); |
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|
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def_blup(i):select(i,0.2666,0.3638662,0.4770437, |
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0.5131397,0.5363797,0.5193677,0.4085123,0.1702815,0.05314236, |
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0.05194055,0.08564082,0.09881395,0.08324373,0.06072902, |
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0.0391076,0.02315354,0.01284458,0.005184709,0.001691774, |
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2.432735e-05,1.212949e-05,0.006659406,0.02539); |
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def_blu(x):interp_arr(x/0.0454545+1,def_blup); |
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|
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isconta = if(btwn(0,v,1),or(boundary(vleft,vright),boundary(vabove,vbelow)),-1); |
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iscontb = if(btwn(0,v,1),btwn(.4,frac(ndivs*v),.6),-1); |
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|
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ra = 0; |
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ga = 0; |
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ba = 0; |
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|
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in = 1; |
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|
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ro = if(in,clip($redv),ra); |
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go = if(in,clip($grnv),ga); |
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bo = if(in,clip($bluv),ba); |
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EndOfPC0 |
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close FHpc0; |
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|
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my $pc1 = "$td/pc1.cal"; |
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open(FHpc1, ">$pc1"); |
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print FHpc1 <<EndOfPC1; |
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norm : mult/scale/le(1); |
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|
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v = map(li(1)*norm); |
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|
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vleft = map(li(1,-1,0)*norm); |
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vright = map(li(1,1,0)*norm); |
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vabove = map(li(1,0,1)*norm); |
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vbelow = map(li(1,0,-1)*norm); |
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|
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map(x) = x; |
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|
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ra = ri(nfiles); |
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ga = gi(nfiles); |
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ba = bi(nfiles); |
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EndOfPC1 |
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close FHpc1; |
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|
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my $pc0args = "-f $pc0"; |
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my $pc1args = "-f $pc1"; |
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|
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if ($showpal == 1) { |
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my $pc = "pcompos -a 1"; |
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foreach my $pal (@palettes) { |
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my $fcimg = "$td/$pal.hdr"; |
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my $lbimg = "$td/${pal}_label.hdr"; |
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system "psign -cb 0 0 0 -cf 1 1 1 -h 20 $pal > $lbimg"; |
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|
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my $cmd = qq[pcomb $pc0args -e "v=x/256"]; |
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$cmd .= qq[ -e "ro=clip(${pal}_red(v));go=clip(${pal}_grn(v));bo=clip(${pal}_blu(v))"]; |
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$cmd .= qq[ -x 256 -y 30 > $fcimg]; |
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system "$cmd"; |
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$pc .= " $fcimg $lbimg"; |
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} |
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system "$pc"; |
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exit 0; |
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} |
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|
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# Contours |
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if ($docont ne '') { |
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# -cl -> $docont = a |
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# -cb -> $docont = b |
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$pc0args .= qq[ -e "in=iscont$docont"]; |
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} elsif ($doposter == 1) { |
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# -cp -> $doposter = 1 |
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$pc0args .= qq[ -e "ro=${pal}_red(seg(v));go=${pal}_grn(seg(v));bo=${pal}_blu(seg(v))"]; |
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$pc0args .= q[ -e "seg(x)=(floor(v*ndivs)+.5)/ndivs"]; |
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} |
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|
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if ($cpict eq '') { |
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$pc1args .= qq[ -e "ra=0;ga=0;ba=0"]; |
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} elsif ($cpict eq $picture) { |
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$cpict = ''; |
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} |
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|
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# Logarithmic mapping |
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if ($decades > 0) { |
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$pc1args .= qq[ -e "map(x)=if(x-10^-$decades,log10(x)/$decades+1,0)"]; |
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} |
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|
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# Colours in the legend |
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my $scolpic = "$td/scol.hdr"; |
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|
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# Labels in the legend |
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my $slabpic = "$td/slab.hdr"; |
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my $cmd; |
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|
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if (($legwidth > 20) && ($legheight > 40)) { |
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# Legend: Create the text labels |
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my $sheight = floor($legheight / $ndivs + 0.5); |
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$legheight = $sheight * $ndivs; |
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$loff = floor($loff * $sheight + 0.5); |
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my $text = "$label"; |
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for (my $i=0; $i<$ndivs; $i++) { |
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my $imap = ($ndivs - 0.5 - $i) / $ndivs; |
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my $value = $scale; |
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if ($decades > 0) { |
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$value *= 10**(($imap - 1) * $decades); |
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} else { |
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$value *= $imap; |
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} |
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|
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# Have no more than 3 decimal places |
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$value =~ s/(\.[0-9]{3})[0-9]*/$1/; |
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$text .= "\n$value"; |
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} |
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open PSIGN, "| psign -s -.15 -cf 1 1 1 -cb 0 0 0 -h $sheight > $slabpic"; |
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print PSIGN "$text"; |
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close PSIGN; |
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|
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# Legend: Create the background colours |
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$cmd = qq[pcomb $pc0args]; |
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$cmd .= q[ -e "v=(y+.5)/yres;vleft=v;vright=v"]; |
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$cmd .= q[ -e "vbelow=(y-.5)/yres;vabove=(y+1.5)/yres"]; |
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$cmd .= qq[ -x $legwidth -y $legheight > $scolpic]; |
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system $cmd; |
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} else { |
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# Legend is too small to be legible. Don't bother doing one. |
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$legwidth = 0; |
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$legheight = 0; |
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$loff = 0; |
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|
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# Create dummy colour scale and legend labels so we don't |
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# need to change the final command line. |
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open(FHscolpic, ">$scolpic"); |
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print FHscolpic "\n-Y 1 +X 1\naaa\n"; |
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close(FHscolpic); |
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open(FHslabpic, ">$slabpic"); |
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print FHslabpic "\n-Y 1 +X 1\naaa\n"; |
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close(FHslabpic); |
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} |
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|
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# Legend: Invert the text labels (for dropshadow) |
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my $slabinvpic = "$td/slabinv.hdr"; |
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$cmd = qq[pcomb -e "lo=1-gi(1)" $slabpic > $slabinvpic]; |
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system $cmd; |
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|
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my $loff1 = $loff - 1; |
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|
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# Command line without extrema |
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$cmd = qq[pcomb $pc0args $pc1args $picture $cpict]; |
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$cmd .= qq[ | pcompos $scolpic 0 0 +t .1 $slabinvpic 2 $loff1]; |
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$cmd .= qq[ -t .5 $slabpic 0 $loff - $legwidth 0]; |
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|
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if ($doextrem == 1) { |
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# Get min/max image luminance |
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my $cmd1 = 'pextrem -o ' . $picture; |
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my $retval = `$cmd1`; |
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# e.g. |
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# x y r g b |
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# 193 207 3.070068e-02 3.118896e-02 1.995850e-02 |
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# 211 202 1.292969e+00 1.308594e+00 1.300781e+00 |
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|
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my @extrema = split(/\s/, $retval); |
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my ($lxmin, $ymin, $rmin, $gmin, $bmin, $lxmax, $ymax, $rmax, $gmax, $bmax) = @extrema; |
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$lxmin += $legwidth; |
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$lxmax += $legwidth; |
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|
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# Weighted average of R,G,B |
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my $minpos = "$lxmin $ymin"; |
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my $minval = ($rmin * .27 + $gmin * .67 + $bmin * .06) * $mult; |
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$minval =~ s/(\.[0-9]{3})[0-9]*/$1/; |
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my $maxval = ($rmax * .27 + $gmax * .67 + $bmax * .06) * $mult; |
| 337 |
$maxval =~ s/(\.[0-9]{3})[0-9]*/$1/; |
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|
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# Create the labels for min/max intensity |
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my $minvpic = "$td/minv.hdr"; |
| 341 |
system "psign -s -.15 -a 2 -h 16 $minval > $minvpic"; |
| 342 |
my $maxvpic = "$td/maxv.hdr"; |
| 343 |
system "psign -s -.15 -a 2 -h 16 $maxval > $maxvpic"; |
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|
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# Add extrema labels to command line |
| 346 |
$cmd .= qq[ $minvpic $minpos $maxvpic $lxmax $ymax]; |
| 347 |
} |
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|
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# Process image and combine with legend |
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system "$cmd"; |
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|
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#EOF |
