Imagick::raiseImageImagick::randomThresholdImage
(PECL imagick 2.0.0)
Imagick::randomThresholdImage — Creates a high-contrast, two-color image
Opis
bool Imagick::randomThresholdImage
( float
$low
, float $high
[, int $channel = Imagick::CHANNEL_ALL
] )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. Ta metoda jest dostępna, jeśli rozszerzenie Imagick zostało skompilowane z ImageMagick w wersji 6.2.9 lub nowszej.
Parametry
-
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.
Zwracane wartości
Zwraca TRUE w przypadku sukcesu.
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