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broflovski

Asciilizer: Turn Your Image Into Text (php) Turn your image into text

By broflovski, in Software

What do you think of the script?  

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broflovski    0

broflovski
Posted

Have you ever seen those replies in a guestbook or page where someone made a hand, face, or flower using nothing but zeros, dashes, and numbers?
I got a code that allows you to take an image from you computer, and turn it into a bunch of ones and ohs! The thing is that it's a PHP script.

Oh, and since it's text, if you were to say, upload a tiny image, like my avatar, it would take up the whole window.

<?ob_start("ob_gzhandler"); // compression, a HUGE saving on this sort of thing.function make($image){    $size = getimagesize($image);    if( !$size ) { die ("Error, file is not an image."); }    $fsize= filesize($image);    $type   = $size[2];    $width  = $size[0];    $height = $size[1];    if($fsize>51200) {die("Image is too big. Max filesize is set to 50 Kbytes.");}    if($width>500) {die("Image is too big. Max width  is set to 500 pixels.");}    if($height>500){die("Image is too big. Max height is set to 500 pixels.");}    // find imagetype and such    switch ($type)    {        case 1:             $im = imagecreatefromgif($image);            break;        case 2:             $im = imagecreatefromjpeg($image);            break;        case 3:             $im = imagecreatefrompng($image);            break;        default:            $im = null;            $extension="";    }    if(@$im){        $imagearray = array();        for($i=0; $i<$height; $i++){            for($j=0; $j<$width; $j++){                                $rgb = ImageColorAt($im, $j, $i);                $colorrgb = imagecolorsforindex($im,$rgb);                $imagearray[($i*$width)+$j] = sprintf("%02X%02X%02X",$colorrgb['red'],$colorrgb['green'],$colorrgb['blue']);            }        }        echo"<html><head><style>DIV { line-height:5px;letter-spacing:0px;}</style></head>";        echo"<BODY BGCOLOR=\"#000000\"><BASEFONT SIZE=\"1\"><pre><div><font>";        $k=0;        for($i=0; $i<$height; $i++){            for($j=0; $j<$width; $j++){                                $ch=rand(97,126);                $ch2=chr($ch);                if($k>0 && $imagearray[$k] == $imagearray[($k-1)]){                    echo $ch2;                }                else{                    echo "</font><FONT color=#" . $imagearray[$k] . ">" . $ch2 . "";                }                $k++;                }            echo"\n";        }        echo"</font></div></pre></body></html>";    }    else{        die ("Error, unsupported image type. Only gif, jpg and png are supported.");    }}if ( $example=="tux") {  // User clicked the example link. Asciilize your example image.    make("images/tux.jpg"); // this is my example image. Exchange for your own, or add more if you wish. Do NOT let the user choose a file from your drive. You don't want him asciilizing your password file :)}else if(@$uploadedimage){ // A file has been uploaded, so make the ascii-code        if ( is_uploaded_file( $_FILES['uploadedimage']['tmp_name'] )) {        make($_FILES['uploadedimage']['tmp_name']);    }}else{// A file has NOT been uploaded, so write upload-form html code    ?>        <html>        <head>            <title> Asciilizer </title>        </head>        <body>            <br />Upload the image you want to asciilize. <br />Supported image formats are: gif, jpeg or png. Max filesize is set to 50 Kb and allowed measurements are H<500 px & W<500 px.            <br />Please, there is no point in trying 2mb screengrabs and such, as it will just fail anyway.            <br />Keep in mind that the ascii version will be 6 times wider and taller = 36 times the area.            <br />As such, large images might stall or even crash your browser.            <br />The optimal image to asciilize, is one with few colors, sharp transitions, around 200x200 pixels, and large areas of the same color.            <br />            <br />Upload it to any php-enabled webserver if you want to play with it. PS: If you wanted to enable larger images, you might need to re-configure your webserver with a larger POST-max-filesize, longer execution-timeout-limit.<br /><br />         <form enctype="multipart/form-data" action="<? echo $_SERVER['PHP_SELF']; ?>" method="post">            <input type="hidden" name="MAX_FILE_SIZE" value="51200">            <input type="file" name="uploadedimage"    size="40">            <input type="submit" value="Asciilize it!">        </form>        </body>        </html>    <?}?>

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