Imagick
PHP Manual

Imagick::adaptiveThresholdImage

(PECL imagick 2.0.0)

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

Descrição

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.

Parâmetros

width

Width of the local neighborhood.

height

Height of the local neighborhood.

offset

The mean offset

Valor Retornado

Returns TRUE on success.


Imagick
PHP Manual