Imagick::brightnessContrastImage

(PECL imagick 3 >= 3.3.0)

Imagick::brightnessContrastImage — Description

説明

public Imagick::brightnessContrastImage(float $brightness, float $contrast, int $channel = Imagick::CHANNEL_DEFAULT): bool

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

戻り値

成功した場合に true を返します。

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();
}

?>

関連キーワード: 　Imagick, Description, brightnessContrastImage, float, into, パラメータ, apply, function, polynomical, ca