Manuel PHP
Imagick::orderedPosterizeImage
(PECL imagick 2.2.3)
Imagick::orderedPosterizeImage — Performs an ordered dither
Description
Cette fonction n'est pas documentée et seule la liste des arguments est disponible.
Performs an ordered dither based on a number of pre-defined dithering threshold maps, but over multiple intensity levels, which can be different for different channels, according to the input arguments.
Liste de paramètres
- threshold_map
-
A string containing the name of the threshold dither map to use
- 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.
Valeurs de retour
Returns TRUE on success.
Erreurs / Exceptions
Throws ImagickException on error.
Remonter 
