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Imagick::normalizeImage

(PECL imagick 2, PECL imagick 3)

Imagick::normalizeImageEnhances the contrast of a color image

Descrição

public Imagick::normalizeImage(int $channel = Imagick::CHANNEL_DEFAULT): bool

Enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available.

Parâmetros

channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Refer to this list of channel constants.

Valor Retornado

Retorna true em caso de sucesso.

Exemplos

Exemplo #1 Imagick::normalizeImage()

<?php
function normalizeImage($imagePath, $channel) {
$imagick = new \Imagick(realpath($imagePath));
$original = clone $imagick;
$original->cropimage($original->getImageWidth() / 2, $original->getImageHeight(), 0, 0);
$imagick->normalizeImage($channel);
$imagick->compositeimage($original, \Imagick::COMPOSITE_ATOP, 0, 0);
header("Content-Type: image/jpg");
echo
$imagick->getImageBlob();
}

?>

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