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Imagick::exportImagePixels> <Imagick::equalizeImage
Last updated: Fri, 20 Nov 2009

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Imagick::evaluateImage

(PECL imagick 2.0.0)

Imagick::evaluateImageApplies an expression to an image

Opis

bool Imagick::evaluateImage ( int $op , float $constant [, int $channel = Imagick::CHANNEL_ALL ] )
Ostrzeżenie

Ta funkcja jest obecnie nieudokumentowana, dostępna jest jedynie lista jej argumentów.

Applys an arithmetic, relational, or logical expression to an image. Use these operators to lighten or darken an image, to increase or decrease contrast in an image, or to produce the "negative" of an image.

Parametry

op

The operator

constant

The value of the operator

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. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.

Zwracane wartości

Zwraca TRUE w przypadku sukcesu.

Błędy/Wyjątki

Zgłasza wyjątek ImagickException w przypadku błędu.



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Imagick::exportImagePixels> <Imagick::equalizeImage
Last updated: Fri, 20 Nov 2009
 
 
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