https://www.php.net/manual/en/imagick.sigmoidalcontrastimage.php
PHP: Imagick::sigmoidalContrastImage - Manual
Adjusts the contrast of an image
phpimagickmanual
https://www.php.net/manual/de/imagick.sigmoidalcontrastimage.php
PHP: Imagick::sigmoidalContrastImage - Manual
Adjusts the contrast of an image
phpimagickmanual
https://www.php.net/manual/it/imagick.sigmoidalcontrastimage.php
PHP: Imagick::sigmoidalContrastImage - Manual
Adjusts the contrast of an image
phpimagickmanual