DJ Mike's Tutorials: PHP

ImageMagick Functions

Imagick::adaptiveThresholdImage

Description:

bool Imagick::adaptiveThresholdImage ( int $width , int $height , int $offset )

Selects an individual threshold for each pixel based on the range of intensity values in its local neighborhood. This allows for thresholding of an image whose global intensity histogram doesn't contain distinctive peaks.

Parameters:

width: Width of the local neighborhood.
height: Height of the local neighborhood.
offset: The mean offset

Return Values

Returns TRUE on success.

Example

<?php
header("Content-type: image/jpeg");
$image = new Imagick("opossum.jpg"); 
$image->adaptiveThresholdImage( 10,10, 1 );
echo $image;
?> 

^

Created by DJ Mike from Santa Barbara