Chủ đề: Share code php chuyển đổi ảnh ra text
 |  admin (SV!) [Off] [#] (19.11.2016 / 20:53) Mình thích mình viết thôi |
ý tưởng rất đơn giản đọc qua từng điểm ảnh rồi tái tạo lại dưới dang RBG.
nếu đọc cả ảnh to sẽ rất tốn time server nên chụy đã thu nhỏ ảnh lại trước khi đọc,
nếu server khủng có thể bỏ qua bước này.
PHP Code:
<?php
$characters = $_POST['characters'];
$fontsize= $_POST['fontsize'];
$img_type = $_POST['color'];
$bgcolor= $_POST['bgcolor'];
?>
<html>
<title>Tạo ảnh từ text</title>
<style>
body{
background:<?=$bgcolor;?>;
font-size: <?=$fontsize;?>px;
}
.bold{
color: red;
font-size: 15px;
font-weight: bold;
}
</style>
<body>
<?php
$imagesize = "150";
$index = 0;
$path = "images/";
$allowedExts = array("jpg", "jpeg", "gif", "png");
$allowedTypes = array("image/gif", "image/jpeg", "image/jpg", "image/pjpeg","image/png");
$extension = end(explode(".", $_FILES["image"]["name"]));
$newfilename = time().".".$extension;
$filename = $_FILES["image"]["name"];
$filetmp = $_FILES["image"]["tmp_name"];
$filetype = $_FILES["image"]["type"];
$filesize = $_FILES["image"]["size"];
$filesize = number_format(( $filesize / 1024 ) / 1024 , 2);
if(!$_FILES["image"]["error"]){
if (in_array($filetype,$allowedTypes) && in_array($extension, $allowedExts))
{
if(($filesize < 2)) // check if file size less than 2 mb
move_uploaded_file($filetmp,"images/" . $newfilename);
else{
echo '<span class="bold">Image is too big</span>';
exit;
}
}else{
echo '<span class="bold">Invalid image, Supported formats jpeg, png, gif</span>';
exit;
}
}
$thumb = "thumb_".$newfilename;
imagecreatethumbnail($path.$newfilename,$path.$thumb,$imagesize /2 ,$imagesize /2);
//$thumb = thumbnail_box(imagecreatefromjpeg($path.$newfilename),$path.$thumb, 210, 150);
//imagedestroy($i);
if(!file_exists($path.$thumb)) {
echo "File not found";
exit;
}
$im = imagecreatefrompng($path.$thumb);
if(!$im) echo "Cant open image";
$w = imagesx($im);
$h = imagesy($im);
for( $i = 0; $i < $h; $i++ ) {
for( $j = 0; $j < $w; $j++ ) {
//if($j%2 == 0) continue;
$rgb = imagecolorat($im, $j, $i);
$a = ($rgb >> 24) & 0xFF;
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$pixel = $characters[$index];
if($img_type == "gray"){
$gray = round(($r + $g + $b) / 3);
//if($gray > 0x7F) $gray = 0xFF;
//$gray = 0x00;
echo "<span style='color:rgb($gray,$gray,$gray);'>$pixel</span>";
}else{
echo "<span style='color:rgb($r,$g,$b);'>$pixel</span>";
}
//echo "<div style='background:rgb($r,$g,$b);float:left;width:1px; height:1px;'>@</div>";
$index++;
if($index >= count(str_split($characters)))
$index = 0;
}
echo "<br>";
}
//unlink($path.$thumb);
unlink($path.$newfilename);
function imagecreatethumbnail($file,$output,$max_width = 150,$max_height = 150)
{
extract($_POST);
$img = imagecreatefromstring(file_get_contents($file));
list($width, $height, $type, $attr) = getimagesize($file);
if($height > $max_height || $width > $max_width)
{
if($width > $height)
{
$thumb_width = $max_width;
$thumb_height = ceil(($height * $thumb_width)/$width);
}
else
{
$thumb_height = $max_height;
$thumb_width = ceil(($width * $thumb_height)/$height);
}
} else {
$thumb_width = $width;
$thumb_height = $height;
}
$thumb_width = $thumb_width + ($thumb_width * ($fontsize / 6) );
imagesavealpha($img,true);
$thumb = imagecreatetruecolor($thumb_width,$thumb_height);
imagesavealpha($thumb,true);
imagealphablending($thumb,false);
imagecopyresampled($thumb,$img,0,0,0,0,$thumb_width,$thumb_height,$width,$height);
$return = imagepng($thumb,$output);
imagedestroy($img);
imagedestroy($thumb);
return $return;
}
?>
</body>
</html>
demo: http://chuyhiep.net/anh_text/creat.php
Hoặc đồ ăn sẵn đây
PHP Code:
<?php
/*
code by Chụy Hiệp
*/
if(isset($_POST['ok']))
{
$characters = $_POST['characters'];
$fontsize= $_POST['fontsize'];
$img_type = $_POST['color'];
$bgcolor= $_POST['bgcolor'];
echo '
<html>
<title>Tạo Ảnh Từ Text By Chụy Hiệp</title>
<style>
body{
background:'.$bgcolor.';
font-size: '.$fontsize.'px;
}
.bold{
color: red;
font-size: 15px;
font-weight: bold;
}
</style>
<body>
<center>';
function imagecreatethumbnail($file,$output,$max_width = 150,$max_height = 150)
{
extract($_POST);
$img = imagecreatefromstring(file_get_contents($file));
list($width, $height, $type, $attr) = getimagesize($file);
if($height > $max_height || $width > $max_width)
{
if($width > $height)
{
$thumb_width = $max_width;
$thumb_height = ceil(($height * $thumb_width)/$width);
}
else
{
$thumb_height = $max_height;
$thumb_width = ceil(($width * $thumb_height)/$height);
}
} else {
$thumb_width = $width;
$thumb_height = $height;
}
$thumb_width = $thumb_width + ($thumb_width * ($fontsize / 6) );
imagesavealpha($img,true);
$thumb = imagecreatetruecolor($thumb_width,$thumb_height);
imagesavealpha($thumb,true);
imagealphablending($thumb,false);
imagecopyresampled($thumb,$img,0,0,0,0,$thumb_width,$thumb_height,$width,$height);
$return = imagepng($thumb,$output);
imagedestroy($img);
imagedestroy($thumb);
return $return;
}
$imagesize = "150";
$index = 0;
$path = "images/";
$allowedExts = array("jpg", "jpeg", "gif", "png");
$allowedTypes = array("image/gif", "image/jpeg", "image/jpg", "image/pjpeg","image/png");
$extension = end(explode(".", $_FILES["image"]["name"]));
$newfilename = time().".".$extension;
$filename = $_FILES["image"]["name"];
$filetmp = $_FILES["image"]["tmp_name"];
$filetype = $_FILES["image"]["type"];
$filesize = $_FILES["image"]["size"];
$filesize = number_format(( $filesize / 1024 ) / 1024 , 2);
if(!$_FILES["image"]["error"]){
if (in_array($filetype,$allowedTypes) && in_array($extension, $allowedExts))
{
if(($filesize < 2)) // check if file size less than 2 mb
move_uploaded_file($filetmp,"images/" . $newfilename);
else{
echo '<span class="bold">Image is too big</span>';
exit;
}
}else{
echo '<span class="bold">Invalid image, Supported formats jpeg, png, gif</span>';
exit;
}
}
$thumb = "thumb_".$newfilename;
imagecreatethumbnail($path.$newfilename,$path.$thumb,$imagesize /2 ,$imagesize /2);
//$thumb = thumbnail_box(imagecreatefromjpeg($path.$newfilename),$path.$thumb, 210, 150);
//imagedestroy($i);
if(!file_exists($path.$thumb)) {
echo "File not found";
exit;
}
$im = imagecreatefrompng($path.$thumb);
if(!$im) echo "Cant open image";
$w = imagesx($im);
$h = imagesy($im);
for( $i = 0; $i < $h; $i++ ) {
for( $j = 0; $j < $w; $j++ ) {
//if($j%2 == 0) continue;
$rgb = imagecolorat($im, $j, $i);
$a = ($rgb >> 24) & 0xFF;
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$pixel = $characters[$index];
if($img_type == "gray"){
$gray = round(($r + $g + $b) / 3);
//if($gray > 0x7F) $gray = 0xFF;
//$gray = 0x00;
echo "<span style='color:rgb($gray,$gray,$gray);'>$pixel</span>";
}else{
echo "<span style='color:rgb($r,$g,$b);'>$pixel</span>";
}
//echo "<div style='background:rgb($r,$g,$b);float:left;width:1px; height:1px;'>@</div>";
$index++;
if($index >= count(str_split($characters)))
$index = 0;
}
echo "<br>";
}
unlink($path.$thumb);
unlink($path.$newfilename);
echo '</body></html>';
exit;
}
?>
<!DOCTYPE html>
<html lang="vi">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="content-type" content="text/html; UTF-8" />
<title>Chuyển Đổi Ảnh Sang Text</title>
</head>
<style>
.table td{
padding: 5px;
font-family: verdana;
font-size: 12px;
}
body h1{
font-family: verdana,arial,sans-serif;
text-shadow: 0px 2px 3px #666;
}
table.gridtable {
font-family: verdana,arial,sans-serif;
font-size:11px;
color:#333333;
border-width: 1px;
border-color: #BEBEBE;
border-collapse: collapse;
border-radius: 8px;
box-shadow: 0px 4px 6px #ADADAD;
}
table.gridtable th {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #BEBEBE;
background-color: #EBEBEB;
text-align: right;
}
table.gridtable td {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #BEBEBE;
background-color: #ffffff;
}
table.gridtable input[type="text"],select,input[type="file"]{
background: #F8F8F8;
padding: 3px;
border: 1px solid #C3C3C3;
border-radius: 3px;
width: 220px;
}
table.gridtable input[type="submit"]{
padding: 5px;
}
.tip{
color: #32688F;
margin-left: 10px;
}
</style>
<body>
<center>
<h1>Chuyển ảnh sang text</h1>
<form name="convert" method="POST" action="?" enctype="multipart/form-data">
<table width="60%" border="0" cellspacing="0" cellpadding="0" class="gridtable">
<tr>
<th width="20%"> Chọn ảnh : </th>
<td><input type="file" name="image"></td>
</tr>
<tr>
<th>Kí tự tạo chữ :</th>
<td><input type="text" name="characters" value="0"><span class="tip">(từ 0 -9)</span></td>
</tr>
<tr>
<th>Kích thước :</th>
<td>
<select name="fontsize" id="fontsize">
<option value="3">Siêu nhỏ</option>
<option value="5">Nhỏ</option>
<option selected="selected" value="8">Chuẩn</option>
<option value="10">Lớn</option>
<option value="12">Rất lớn</option>
</select><span class="tip">(càng nhỏ càng nhanh)</span>
</td>
</tr>
<tr>
<th>Kiểu ảnh</th>
<td>
<select name="img_type">
<option selected="selected" value="color">Chuẩn</option>
<option value="gray">Lệch</option>
</select><span class="tip">(Màu ảnh xuất ra)</span>
</td>
</tr>
<tr>
<th>Màu nền</th>
<td><input type="text" name="bgcolor" value="black"><span class="tip">(chuẩn nhất với màu đen)</span></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" name ="ok" value="Chuyển Đổi"></td>
</tr>
</form>
</center>
</body>
</html>
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