GoLang Imagick::levelImage

request it (310)
GoLang replacement for PHP's Imagick::levelImage [edit | history]

Do you know a GoLang replacement for PHP's Imagick::levelImage? Write it!

PHP Imagick::levelImage

PHP original manual for Imagick::levelImage [ show | php.net ]


(PECL imagick 2.0.0)

Imagick::levelImageAdjusts the levels of an image


bool Imagick::levelImage ( float $blackPoint , float $gamma , float $whitePoint [, int $channel = Imagick::CHANNEL_DEFAULT ] )

Adjusts the levels of an image by scaling the colors falling between specified white and black points to the full available quantum range. The parameters provided represent the black, mid, and white points. The black point specifies the darkest color in the image. Colors darker than the black point are set to zero. Mid point specifies a gamma correction to apply to the image. White point specifies the lightest color in the image. Colors brighter than the white point are set to the maximum quantum value.



The image black point


The gamma value


The image white point


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.

Return Values

Returns TRUE on success.


Throws ImagickException on error.


Example #1 Imagick::levelImage()

function levelImage($blackPoint$gamma$whitePoint) {
$imagick = new \Imagick();

$quantum $imagick->getQuantum();
$imagick->levelImage($blackPoint 100 $gamma$quantum $whitePoint 100);

header("Content-Type: image/png");