Imagick::levelImageImagick::linearStretchImage
(PECL imagick 2.0.0)
Imagick::linearStretchImage — Stretches with saturation the image intensity
说明
bool Imagick::linearStretchImage
( float
$blackPoint
, float $whitePoint
)Stretches with saturation the image intensity.
参数
-
blackPoint -
The image black point
-
whitePoint -
The image white point
返回值
成功时返回 TRUE。
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