Imagick::gammaImage
(No version information available, might be only in CVS)
Imagick::gammaImage — Gamma-corrects an image
Description
bool Imagick::gammaImage
( float $gamma
[, int $channel
] )
Warning
此函數目前沒有參考文件；只有引數列表。
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.
Parameters
- gamma
-
- channel
-
Return Values
Returns TRUE on success.