Imagick::brightnessContrastImage
(バージョン情報なし。おそらく SVN 版にしか存在しないでしょう)
Imagick::brightnessContrastImage — Description
説明
public void Imagick::brightnessContrastImage
( string
$brightness
, string $contrast
[, int $CHANNEL = Imagick::CHANNEL_DEFAULT
] )Change the brightness and/or contrast of an image. It converts the brightness and contrast parameters into slope and intercept and calls a polynomical function to apply to the image.
パラメータ
-
brightness -
-
contrast -
-
CHANNEL -
返り値
例
例1 Imagick::brightnessContrastImage()
<?php
function brightnessContrastImage($imagePath, $brightness, $contrast, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->brightnessContrastImage($brightness, $contrast, $channel);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
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