Imagick::gammaImage
(No version information available, might be only in CVS)
Imagick::gammaImage — Gamma-corrects an image
说明
bool Imagick::gammaImage
( float $gamma
[, int $channel
] )
Warning
本函数暂无文档，仅有参数列表。
Warning
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Gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3.
参数
- gamma
-
- channel
-
返回值
Returns TRUE on success.