kakapo's nest

<?php
$width = "90";
$height = "30";
$charlen = "4";
$bgcolor = "#eeeeee";
$noise = true;
$noisenum = 20;
$border = false;
$bordercolor = "#cccccc";
$font = dirname(__FILE__). "/plugins/ENGR.TTF";
generate($width,$height,$charlen,$font,$bgcolor,$noise,$noisenum,$borer,$bordercolor);

function generate($width,$height,$len,$font,$bgcolor,$noise,$noisenum,$borer,$bordercolor){
    //创建画布
    $image = imagecreatetruecolor ( $width, $height );
    $back = getcolor ($image, $bgcolor );
    imageFilledRectangle ( $image, 0, 0, $width, $height, $back );
    $size = ($width-6) / $len;
    $size = ($size > $height)?$height:$size;

    //为画布添加杂点
    if ($noise == true){
      for($i = 0; $i < $noisenum; $i++) {
        $randColor = imageColorAllocate ( $image, rand ( 150, 255 ), rand ( 150, 255 ), rand ( 150, 255 ) );
        $x1 = rand(0,$width);
        $y1 = rand(0,$height);
        $x2 = $x1+rand(-20,20);
        $y2 = $y1+rand(-20,20);
        imageline ( $image, $x1, $y1,  $x2,  $y2,  $randColor );
      }
    }

    //生成随机数字

    $textall = "0123456789ABCDEFGHHJKLMNPQRSTWXY";
    $code = '';
    $colorArr = array("#006633","#990000","#006699","#663333");
    $angleArr = array(10,-10,-20,20);
    $textColor = getcolor($image,$colorArr[array_rand($colorArr)]);

    //echo $textColor;
    for($i = 0; $i < $len; $i ++) {
      $tmptext = rand ( 0, 31 );
      $randtext = $textall [$tmptext];
      imagettftext ( $image,18, $angleArr[array_rand($angleArr)], 6+$size*$i, 24, $textColor, $font, $randtext );
      $code .= $randtext;
    }
    $_SESSION ['validatecode'] = $code;

    //加上边框
    if ($border == true){
      $bordercolor = getcolor ( $image, $bordercolor );
      imageRectangle ( $image, 0, 0, $width - 1, $height - 1, $bordercolor );
    }


    //生成
    header ( "Content-type: image/png" );
    imagePng ( $image );
    imagedestroy ( $image );
    die;
  }
  function getcolor(&$image,$color) {
    $color = eregi_replace ( "^#", "", $color );
    $r = $color [0] . $color [1];
    $r = hexdec ( $r );
    $b = $color [2] . $color [3];
    $b = hexdec ( $b );
    $g = $color [4] . $color [5];
    $g = hexdec ( $g );
    $color = imagecolorallocate ( $image, $r, $b, $g );
    return $color;
  }

?>

$white = imagecolorallocate($src, 255, 255, 255);
imagecolortransparent($src,$white);

/**
* 将jpeg图片的某个背景颜色透明化，转成png图片
* @param string $jpg_img 输入文件地址
* @param string $png_img 输出文件地址
* @param string $bg_color 背景颜色，格式 例如 #ffffff
* @param int $alpha 图片透明度 其值从 0 到 127。0 表示完全不透明，127 表示完全透明。
* @param float $radio RGB颜色过滤因子，0-1
* @author kakapowu@gmail.com at 2009-06-09
* @return boolen
**/
function jpeg2transpng($jpg_img,$png_img,$bg_color,$alpha,$radio){
  $im_in  =imagecreatefromjpeg($jpg_img);
  if(!$im_in) {
    return false;
  }
  $size  =getimagesize($jpg_img);

  //创建透明画布
  $im_out =imagecreatetruecolor($size[0], $size[1]);
  imagealphablending($im_out, true);
  imagesavealpha($im_out, true);
  $trans_colour = imagecolorallocatealpha($im_out, 0, 0, 0, 127);
  imagefill($im_out, 0, 0, $trans_colour);

  //设定透明色
  $red = intval( hexdec(substr($bg_color,1,2))*$radio );
  $green = intval( hexdec(substr($bg_color,3,2))*$radio);
  $blue = intval( hexdec(substr($bg_color,5,2))*$radio);

  //像素级的图片合成
  for ($j=0;$j<=$size[1]-1;$j++)
  {
      for ($i=0;$i<=$size[0]-1;$i++)
      {
        $rgb = imagecolorat($im_in,$i,$j);
        $r = ($rgb >> 16) & 0xFF;
        $g = ($rgb >> 8) & 0xFF;
        $b = $rgb & 0xFF;
       if ($r>=$red && $g>=$green && $b>=$blue)
        {
            //echo '.';
          continue;
        }
        //echo "<a href='#".dechex($r).dechex($g).dechex($b)."'>*</a>";
          $color=imagecolorallocatealpha($im_out,$r,$g,$b,$alpha);
         imagesetpixel($im_out,$dst_x+$i,$dst_y+$j,$color);
      }
      //echo "\n";
  }

  //生成图片
  imagepng($im_out,$png_img);
  imagedestroy($im_in);
  imagedestroy($im_out);

  return true;
}

#tar xvzf OpenCV-1.0.0.tar.gz
#cd opencv-1.0.0
#./configure
#make
#make install
#make check (检查是否安装全部正确)

#tar xzvf facedetect-1.0.0.tar.gz
#cd facedetect-1.0.0
#phpize && ./configure && make && make install

//检查有多少个脸型
var_dump(face_count('party.jpeg', haarcascade_frontalface_alt.xml'));

//返回脸型在图片中的位置参数，多个则返回数组
$arr = face_detect('party.jpeg', haarcascade_frontalface_alt2.xml');
print_r($arr);

<?php
if($_FILES){

$img = $_FILES['pic']['tmp_name'];
$arr = face_detect($img, 'haarcascade_frontalface_alt2.xml');

//$arr1 = face_detect($img, 'haarcascade_frontalface_alt_tree.xml');

if(is_array($arr1)) $all =array_merge($arr,$arr1);
else $all = $arr;

$im = new Imagick($img);
//$draw =new ImagickDraw();
//$borderColor = new ImagickPixel('red');
//$draw->setFillAlpha(0.0);
//$draw->setStrokeColor  ($borderColor);
//$draw->setStrokeWidth  (1);
if(is_array($all)){
  foreach ($all as $v){
    $im_cl = $im->clone();
    $im_cl->cropImage($v['w'],$v['h'],$v['x'],$v['y']);
    
    $im_cl->swirlImage(60);
    $im->compositeImage( $im_cl, Imagick::COMPOSITE_OVER , $v['x'], $v['y'] );

    
    //$draw->rectangle($v['x'],$v['y'],$v['x']+$v['w'],$v['y']+$v['h']);
    //$im->drawimage($draw);
    
    
  }
}

  header( "Content-Type: image/png" );
  echo $im;
}else{
  ?>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <form method="POST" enctype="multipart/form-data">
  人脸识别试验：只支持jpg,png<br>
  上传一张图片 <input type="file" name="pic">
  <input type="submit" value="upload">
  </form>
  <?
}
?>