Do you have a copy of the database or just a dump file ?

If you have the database try this

#!perl
use strict;
use DBI;

my $database  = 'MapTiles.sqlitedb';
my $tablename = 'images';

# open db
my $dbh = open_db($database);
my $imgfolder = 'maptiles-output';
if (! -d $imgfolder){
  mkdir($imgfolder, 0755) or die "$!";
}

# select data
my $sql = 'SELECT * from '.$tablename;
my $sth = $dbh->prepare($sql);
$sth->execute();

# recreate files
while (my ($zoom, $x, $y, $flags, $length, $data) = $sth->fetchrow_arr
+ay){
  my $filename = "$imgfolder/$x,$y\@$zoom.png";
  print "creating $filename\n";
  open OUT,'>:raw',$filename or die "$filename : $!";
  print OUT $data;
  close OUT;
}

# open db
sub open_db {
  my $dbfile = shift;
  my $dbh = DBI->connect(         
    "dbi:SQLite:dbname=$dbfile", 
    "", "", { RaiseError => 1 }       
    ) or die $DBI::errstr;
  return $dbh;
}
[download]

Update : dbname = $dbfile corrected