imagick.whitethresholdimage(3) php man page | unix.com

IMAGICK.WHITETHRESHOLDIMAGE(3)						 1					    IMAGICK.WHITETHRESHOLDIMAGE(3)

Imagick::whiteThresholdImage - Force all pixels above the threshold into white

SYNOPSIS

       bool Imagick::whiteThresholdImage (mixed  $threshold)

DESCRIPTION

	Is  like  Imagick::ThresholdImage()  but  force  all  pixels  above  the threshold into white while leaving all pixels below the threshold
       unchanged.

PARAMETERS

	      o $threshold
		-

RETURN VALUES

	Returns TRUE on success.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 2.1.0	|						    |
       |	|						    |
       |	|  Now allows a string representing the color as  a |
       |	| parameter.  Previous versions allow only an Imag- |
       |	| ickPixel object.				    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      Imagick.whiteThresholdImage(3)

	      <?php
	      function whiteThresholdImage($imagePath, $color) {
		  $imagick = new Imagick(realpath($imagePath));
		  $imagick->whiteThresholdImage($color);
		  header("Content-Type: image/jpg");
		  echo $imagick->getImageBlob();
	      }

	      ?>

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