The Imagick class
PHP Manual

Imagick::adaptiveThresholdImage

(PECL imagick 2.0.0)

Imagick::adaptiveThresholdImageSelects a threshold for each pixel based on a range of intensity

Описание

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.

Параметри

width

Width of the local neighborhood.

height

Height of the local neighborhood.

offset

The mean offset

Връщани стойности

Връща TRUE при успех.


The Imagick class
PHP Manual