PHP 实现的将图片转换为TXT
PHP实现的将图片转换为TXT
<?php
/*
2015年10月19日10:24:59
*/
//打开一幅图像
$file_name='d:\ascii_dora.png';
$chars="$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'.";
functiongetimgchars($color_tran,$chars){
$length=strlen($chars);
$alpha=$color_tran['alpha'];
$r=$color_tran['red'];
$g=$color_tran['green'];
$b=$color_tran['blue'];
$gray=intval(0.2126*$r+0.7152*$g+0.0722*$b);
if($gray==0){
return'.';
}
if($gray<196){
$unit=(256.0+1)/$length;
return$chars[intval($gray/$unit)];
}
return"";
}
functioncolor_img($color_tran,$chars){
$length=strlen($chars);
$alpha=$color_tran['alpha'];
$r=$color_tran['red'];
$g=$color_tran['green'];
$b=$color_tran['blue'];
$gray=intval(0.2126*$r+0.7152*$g+0.0722*$b);
$rand=rand(0,$length-1);
$color="rgb(".$r.",".$g.",".$b.")";
$char=$chars[$rand];
return'<spanstyle="color:'.$color.'">'.$char."</span>";;
}
functionresize_img($file_name,$chars,$flage=true){
//header('Content-Type:image/jpeg');
list($width,$height,$type)=getimagesize($file_name);
$fun='imagecreatefrom'.image_type_to_extension($type,false);
if($type==3){
$flage=false;
}
$fun($file_name);
$new_height=100;
$percent=$height/$new_height;
$new_width=$width/$percent;
$image_p=imagecreatetruecolor($new_width,$new_height);
$image=$fun($file_name);
imagecopyresampled($image_p,$image,0,0,0,0,$new_width,$new_height,$width,$height);
if($flage){
return$image_p;
}else{
return$image;
}
}
$im=resize_img($file_name,$chars);
$width=imagesx($im);
$height=imagesy($im);
$back_text="";
for($i=1;$i<=$height;$i++){
for($j=1;$j<=$width;$j++){
$color_index=imagecolorat($im,$j-1,$i-1);
$color_tran=imagecolorsforindex($im,$color_index);
$back_text.=color_img($color_tran,$chars,false);
}
$back_text.="<br/>";
}
echo"<pre>";
echo$back_text;
echo"</pre>";
//file_put_contents('1.txt',$back_text);
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