bsagg

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Aug 27th, 2011

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PHP 2.66 KB | None | 0 0

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<?
error_reporting(0);
class OCRbreaker {
function read($data) {
$orig = imagecreatefromstring($data);
$letter_num = 2;
$pos = array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z");
$code = '';
$lbl = "";
$hasil = array();
foreach ($pos as $p1) {
foreach ($pos as $p2) {
$lbl = $p1.$p2;
$gbr = $this->gambar($lbl);
$skor = $this->beda($orig, $gbr);
$hasil[$lbl] = $skor;
}
}
asort($hasil);
foreach ($hasil as $k=>$v) { $kode = $k; break; }
return $kode;
}
function ketengah($image, $image_width, $string, $font_size, $y, $color) {
$text_width = imagefontwidth($font_size)*strlen($string);
$center = ceil($image_width / 2);
$x = $center - (ceil($text_width/2));
ImageString($image, $font_size, $x, $y, $string, $color);
}
function gambar($teks) {
$width = 30;
$height = 20;
$image = ImageCreate($width, $height);
$black = ImageColorAllocate($image, 0, 0, 0);
$white = ImageColorAllocate($image, 255, 255, 255);
$grey = ImageColorAllocate($image, 200, 200, 200);
ImageFill($image, 0, 0, $white);
$this->ketengah($image, $width, $teks, 3, 3, $black);
ImageRectangle($image,0,0,$width-1,$height-1,$grey);
return $image;
}
function gambar_canvas($teks) {
$img = $this->gambar($teks);
header("Content-Type: image/jpeg");
ImageJpeg($img);
ImageDestroy($img);
}
function beda($i1, $i2) {
$sx1 = imagesx($i1);
$sy1 = imagesy($i1);
if ($sx1 !== imagesx($i2) || $sy1 !== imagesy($i2)) {
return 100;
}
$diffi = imagecreatetruecolor($sx1, $sy1);
$green = imagecolorallocate($diffi, 0, 255, 0);
imagefill($diffi, 0, 0, imagecolorallocate($diffi, 0, 0, 0));
$different_pixels = 0;
for ($x = 0; $x < $sx1; $x++) {
for ($y = 0; $y < $sy1; $y++) {
$rgb1 = imagecolorat($i1, $x, $y);
$pix1 = imagecolorsforindex($i1, $rgb1);
$rgb2 = imagecolorat($i2, $x, $y);
$pix2 = imagecolorsforindex($i2, $rgb2);
if ($pix1 !== $pix2) {
$different_pixels++;
imagesetpixel($diffi, $x, $y, $green);
}
}
}
if (!$different_pixels) {
return 0;
} else {
$total = $sx1 * $sy1;
return number_format(100 * $different_pixels / $total, 2);
}
}
}
?>

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