Php/docs/imagick.randomthresholdimage

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Imagick::randomThresholdImage

(PECL imagick 2, PECL imagick 3)

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


Description

public Imagick::randomThresholdImage ( float $low , float $high [, int $channel = Imagick::CHANNEL_DEFAULT ] ) : bool

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. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.


Parameters

low
The low point
high
The high point
channel
Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.


Return Values

Returns TRUE on success.


Examples

Example #1 Imagick::randomThresholdImage()

<?phpfunction randomThresholdimage($imagePath, $lowThreshold, $highThreshold, $channel) {    $imagick = new \Imagick(realpath($imagePath));    $imagick->randomThresholdimage(        $lowThreshold * \Imagick::getQuantum(),        $highThreshold * \Imagick::getQuantum(),        $channel    );    header("Content-Type: image/jpg");    echo $imagick->getImageBlob();}?>