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greg |
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#!/usr/bin/perl -w |
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# RCSid $Id: genBSDF.pl,v 2.83 2019/06/10 13:58:49 greg Exp $ |
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# |
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# Compute foveal histogram for picture set |
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# |
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# G. Ward |
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# |
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use strict; |
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my $windoz = ($^O eq "MSWin32" or $^O eq "MSWin64"); |
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use File::Temp qw/ :mktemp /; |
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my $minop = 'L=$1*179;$1=if(L-1e-7,log10(L)-.01,-7)'; |
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my $maxop = '$1=log10($1*179)+.01'; |
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my $tf; |
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if ($windoz) { |
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my $tmploc = `echo \%TMP\%`; |
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chomp $tmploc; |
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$tf = mktemp("$tmploc\\phdXXXXXX"); |
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chomp $tf; |
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if ($#ARGV < 0) { |
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system "pfilt -1 -x 128 -y 128 -p 1 " . |
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"| pvalue -o -h -H -d -b > $tf"; |
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} else { |
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foreach (@ARGV) { |
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system "pfilt -1 -x 128 -y 128 -p 1 $_" . |
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"| pvalue -o -h -H -d -b >> $tf"; |
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die "Bad picture '$_'\n" if ( $? ); |
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} |
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} |
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my $Lmin=`total -l $tf | rcalc -e "$minop"`; |
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my $Lmax=`total -u $tf | rcalc -e "$maxop"`; |
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chomp $Lmin; |
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chomp $Lmax; |
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system q[rcalc -e "L=$1*179;cond=L-1e-7;$1=log10(L)" ] . $tf . |
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" | histo $Lmin $Lmax 777"; |
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} else { |
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$tf = mktemp("/tmp/phdXXXXXX"); |
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chomp $tf; |
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if ($#ARGV < 0) { |
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system "pfilt -1 -x 128 -y 128 -p 1 " . |
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"| pvalue -o -h -H -df -b > $tf"; |
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} else { |
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foreach (@ARGV) { |
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system "pfilt -1 -x 128 -y 128 -p 1 '$_'" . |
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"| pvalue -o -h -H -df -b >> $tf"; |
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die "Bad picture '$_'\n" if ( $? ); |
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} |
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} |
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my $Lmin=`total -if -l $tf | rcalc -e '$minop'`; |
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my $Lmax=`total -if -u $tf | rcalc -e '$maxop'`; |
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chomp $Lmin; |
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chomp $Lmax; |
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system q[rcalc -if -e 'L=$1*179;cond=L-1e-7;$1=log10(L)' ] . $tf . |
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" | histo $Lmin $Lmax 777"; |
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} |
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unlink $tf; |
