The Imagick class
PHP Manual

Imagick::randomThresholdImage

(No version information available, might be only in CVS)

Imagick::randomThresholdImageCreates a high-contrast, two-color image

Description

bool Imagick::randomThresholdImage ( float $low , float $high [, int $channel ] )
Warning

This function is currently not documented; only its argument list is available.

Changes the value of individual pixels based on the intensity of each pixel compared to threshold. The result is a high-contrast, two color image.

Parameters

low

high

channel

Return Values

Returns TRUE on success.


The Imagick class
PHP Manual