Imagick
PHP Manual

Imagick::contrastImage

(PECL imagick 2.0.0)

Imagick::contrastImageChange the contrast of the image

Descrição

bool Imagick::contrastImage ( bool $sharpen )

Enhances the intensity differences between the lighter and darker elements of the image. Set sharpen to a value other than 0 to increase the image contrast otherwise the contrast is reduced.

Parâmetros

sharpen

The sharpen value

Valor Retornado

Returns TRUE on success.

Erros

Throws ImagickException on error.


Imagick
PHP Manual