Imagick::gammaImage
(No version information available, might be only in CVS)
Imagick::gammaImage — Gamma-corrects an image
說明
bool Imagick::gammaImage
( float $gamma
[, int $channel
] )
Warning
此函式目前沒有參考文件；只有引數列表。
Warning
本函式是實驗性的。這個函式的行為、名稱、和關於此函式的任何其他文件在未來PHP的發行中可能會在不通知的情況下改變。 使用此函式需自行承擔風險。
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.
參數
- gamma
-
- channel
-
Return值
Returns TRUE on success.