Author: sparky
Date: Mon Jun 8 01:34:55 2009
New Revision: 10378
Added:
toys/fun/MU-captcha/gen_db.pl (contents, props changed)
Log:
- util to generate font database
Added: toys/fun/MU-captcha/gen_db.pl
==============================================================================
--- (empty file)
+++ toys/fun/MU-captcha/gen_db.pl Mon Jun 8 01:34:55 2009
@@ -0,0 +1,394 @@
+#!/usr/bin/perl
+#
+use strict;
+use warnings;
+use Image::Magick;
+
+
+my @alph = qw(A B C D E F G H K M N P Q R S T U V W X Y Z);
+my @noalph = qw(I J L O);
+
+my %size = (
+ A => 28,
+ B => 22,
+ C => 21,
+ D => 27,
+ E => 16,
+ F => 16,
+ G => 26,
+ H => 26,
+ K => 20,
+ M => 38,
+ N => 28,
+ P => 21,
+ Q => 30,
+ R => 22,
+ S => 18,
+ T => 19,
+ U => 26,
+ V => 22,
+ W => 40,
+ X => 23,
+ Y => 18,
+ Z => 18,
+);
+
+my %avg_1;
+
+foreach my $n ( @alph ) {
+
+my $avg = new Image::Magick;
+
+foreach my $file ( glob "$n???*.gif" ) {
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 40, height => 32, x => 0, y => 0 );
+ $img->Extent( width => 40, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '40x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+ push @$avg, @$bg;
+}
+
+my $p = $avg->Average();
+$p->Write("avg_1_$n.png");
+print "Wrote avg_1_$n.png\n";
+
+$avg_1{$n} = $p;
+}
+
+my $avg_1;
+{
+ my $avg = new Image::Magick;
+ foreach ( sort keys %avg_1 ) {
+ push @$avg, $avg_1{$_};
+ }
+ $avg_1 = $avg->Append(stack=>1);
+ $avg_1->Write("avg_1_all.png");
+}
+
+
+my $ok = 0;
+my $nok = 0;
+foreach my $file ( glob "????*.gif" ) {
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 40, height => 32, x => 0, y => 0 );
+ $img->Extent( width => 40, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '40x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+
+ my $min = 1;
+ my $min_n = undef;
+ foreach my $n ( keys %avg_1 ) {
+ my $x = $bg->Compare( image => $avg_1{$n} );
+ my ($e, $em) = $bg->Get( 'error', 'mean-error' );
+ if ( $em < $min ) {
+ $min = $em;
+ $min_n = $n;
+ }
+ #print "X: $x, $n, $e, $em\n";
+ }
+ if ( $file =~ /^$min_n/ ) {
+ $ok++;
+ } else {
+ print "$file mismatch: $min_n\n";
+ $nok++;
+ }
+
+ #print "$file: $w x $h\n";
+}
+
+print "OK: $ok, NOK: $nok\n";
+
+
+
+
+
+
+
+my %avg_2;
+
+foreach my $n ( @alph ) {
+
+my $avg = new Image::Magick;
+
+foreach my $file ( glob "?$n??*.gif" ) {
+ $file =~ /^(.)/;
+ my $fl = $1;
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 40, height => 32, x => $size{$fl} - 6, y => 0 );
+ $img->Extent( width => 40, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '40x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+ push @$avg, @$bg;
+}
+
+my $p = $avg->Average();
+$p->Write("avg_2_$n.png");
+print "Wrote avg_2_$n.png\n";
+
+$avg_2{$n} = $p;
+}
+
+my $avg_2;
+{
+ my $avg = new Image::Magick;
+ foreach ( sort keys %avg_2 ) {
+ push @$avg, $avg_2{$_};
+ }
+ $avg_2 = $avg->Append(stack=>1);
+ $avg_2->Write("avg_2_all.png");
+}
+
+
+$ok = 0;
+$nok = 0;
+foreach my $file ( glob "????*.gif" ) {
+ $file =~ /^(.)/;
+ my $fl = $1;
+
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 40, height => 32, x => $size{$fl} - 6, y => 0 );
+ $img->Extent( width => 40, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '40x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+
+ my $min = 1;
+ my $min_n = undef;
+ foreach my $n ( keys %avg_2 ) {
+ my $x = $bg->Compare( image => $avg_2{$n} );
+ my ($e, $em) = $bg->Get( 'error', 'mean-error' );
+ if ( $em < $min ) {
+ $min = $em;
+ $min_n = $n;
+ }
+ #print "X: $x, $n, $e, $em\n";
+ }
+ if ( $file =~ /^.$min_n/ ) {
+ $ok++;
+ } else {
+ print "$file mismatch: $min_n\n";
+ $nok++;
+ }
+
+ #print "$file: $w x $h\n";
+}
+
+print "OK: $ok, NOK: $nok\n";
+
+
+
+
+
+
+
+
+
+
+
+my %avg_3;
+
+foreach my $n ( @alph ) {
+
+my $avg = new Image::Magick;
+
+foreach my $file ( glob "??$n?*.gif" ) {
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 40, height => 32, x => $w - 56, y => 0 );
+ $img->Extent( width => 40, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '40x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+ push @$avg, @$bg;
+}
+
+my $p = $avg->Average();
+$p->Write("avg_3_$n.png");
+print "Wrote avg_3_$n.png\n";
+
+$avg_3{$n} = $p;
+}
+
+my $avg_3;
+{
+ my $avg = new Image::Magick;
+ foreach ( sort keys %avg_3 ) {
+ push @$avg, $avg_3{$_};
+ }
+ $avg_3 = $avg->Append(stack=>1);
+ $avg_3->Write("avg_3_all.png");
+}
+
+
+
+$ok = 0;
+$nok = 0;
+foreach my $file ( glob "????*.gif" ) {
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 40, height => 32, x => $w - 56, y => 0 );
+ $img->Extent( width => 40, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '40x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+
+ my $min = 1;
+ my $min_n = undef;
+ foreach my $n ( keys %avg_3 ) {
+ my $x = $bg->Compare( image => $avg_3{$n} );
+ my ($e, $em) = $bg->Get( 'error', 'mean-error' );
+ if ( $em < $min ) {
+ $min = $em;
+ $min_n = $n;
+ }
+ #print "X: $x, $n, $e, $em\n";
+ }
+ if ( $file =~ /^..$min_n/ ) {
+ $ok++;
+ } else {
+ print "$file mismatch: $min_n\n";
+ $nok++;
+ }
+
+ #print "$file: $w x $h\n";
+}
+
+print "OK: $ok, NOK: $nok\n";
+
+
+
+
+
+
+
+
+
+
+
+my %avg_4;
+
+foreach my $n ( (1..9) ) {
+
+my $avg = new Image::Magick;
+
+foreach my $file ( glob "???$n*.gif" ) {
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 22, height => 32, x => $w - 22, y => 0 );
+ $img->Extent( width => 22, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '22x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+ push @$avg, @$bg;
+}
+
+my $p = $avg->Average();
+$p->Write("avg_4_$n.png");
+print "Wrote avg_4_$n.png\n";
+$avg_4{$n} = $p;
+}
+
+
+
+$ok = 0;
+$nok = 0;
+foreach my $file ( glob "????*.gif" ) {
+ my $img = new Image::Magick;
+ $img->Read( $file );
+ my ($w, $h) = $img->Get( 'columns', 'rows' );
+
+ $img->Crop( width => 22, height => 32, x => $w - 22, y => 0 );
+ $img->Extent( width => 22, height => 32, x => 0, y => 0 );
+
+ my $bg = new Image::Magick;
+ $bg->Set( size => '22x32' );
+ $bg->Read( "xc:white" );
+ $bg->Composite( image => $img );
+
+
+ my $min = 1;
+ my $min_n = undef;
+ foreach my $n ( keys %avg_4 ) {
+ my $x = $bg->Compare( image => $avg_4{$n} );
+ my ($e, $em) = $bg->Get( 'error', 'mean-error' );
+ if ( $em < $min ) {
+ $min = $em;
+ $min_n = $n;
+ }
+ #print "X: $x, $n, $e, $em\n";
+ }
+ if ( $file =~ /^...$min_n/ ) {
+ $ok++;
+ } else {
+ print "$file mismatch: $min_n\n";
+ $nok++;
+ }
+
+ #print "$file: $w x $h\n";
+}
+
+print "OK: $ok, NOK: $nok\n";
+
+
+my $avg_4;
+{
+ my $avg = new Image::Magick;
+ foreach ( sort keys %avg_4 ) {
+ push @$avg, $avg_4{$_};
+ }
+ $avg_4 = $avg->Append(stack=>1);
+ $avg_4->Write("avg_4_all.png");
+}
+
+{
+ my $avg = new Image::Magick;
+ push @$avg, $avg_1;
+ push @$avg, $avg_2;
+ push @$avg, $avg_3;
+ push @$avg, $avg_4;
+ my $a = $avg->Append(stack=>0);
+ $a->Quantize(colorspace=>'gray');
+ $a->Write("avg_all.png");
+}
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