Imagick::separateImageChannelImagick::sepiaToneImage
(PECL imagick 2.0.0)
Imagick::sepiaToneImage — Sepia tones an image
说明
bool Imagick::sepiaToneImage
( float
$threshold
)Applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the sepia toning. A threshold of 80 is a good starting point for a reasonable tone.
参数
-
threshold -
返回值
成功时返回 TRUE。
错误／异常
错误时抛出 ImagickException。
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