Last updated: Fri, 18 Jul 2008

Imagick::gammaImage

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

Imagick::gammaImage — Gamma-corrects an image

Descrizione

bool Imagick::gammaImage ( float $gamma [, int $channel ] )

Avviso

Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

Gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3.

Elenco dei parametri

gamma: The amount of gamma-correction.
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.

Valori restituiti

Restituisce TRUE in caso di successo.

Errori/Eccezioni

Lancia una ImagickException in caso di errore.

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Imagick::gammaImage

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Imagick::gaussianBlurImage

Imagick::fxImage

Last updated: Fri, 18 Jul 2008