(PECL imagick 2.0.0)

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


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.

Elenco dei parametri


Width of the local neighborhood.


Height of the local neighborhood.


The mean offset

Valori restituiti

Restituisce TRUE in caso di successo.

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