Imagick::setSamplingFactors

(PECL imagick 2.0.0)

Imagick::setSamplingFactors — Sets the image sampling factors

说明

bool Imagick::setSamplingFactors ( array $factors )

Sets the image sampling factors.

参数

factors

返回值

成功时返回 TRUE 。

范例

Example #1 Imagick::setSamplingFactors()

  <?php
 function  setSamplingFactors ( $imagePath ) {

     $imagePath  =  "../imagick/images/FineDetail.png" ;
     $imagick  = new \ Imagick ( realpath ( $imagePath ));
     $imagick -> setImageFormat ( 'jpg' );
     $imagick -> setSamplingFactors (array( '2x2' ,  '1x1' ,  '1x1' ));

     $compressed  =  $imagick -> getImageBlob ();

    
     $reopen  = new \ Imagick ();
     $reopen -> readImageBlob ( $compressed );

     $reopen -> resizeImage (
         $reopen -> getImageWidth () *  4 ,
         $reopen -> getImageHeight () *  4 ,
        \ Imagick :: FILTER_POINT ,
         1
     );
    
     header ( "Content-Type: image/jpg" );
    echo  $reopen -> getImageBlob ();
}

 ?>