Imagick::contrastStretchImage
(No version information available, might be only in CVS)
Imagick::contrastStretchImage — Enhances the contrast of a color image
Описание
bool Imagick::contrastStretchImage
( float $black_point
, float $white_point
[, int $channel
] )
Внимание
К настоящему времени эта функция еще не была документирована; для ознакомления доступен только список аргументов.
Enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available
Список параметров
- black_point
-
The black point.
- white_point
-
The white 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. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.
Возвращаемые значения
Returns TRUE on success.
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