Imagick::__construct
Imagick::contrastStretchImage
Imagick
PHP Manual

# Imagick::contrastImage

(PECL imagick 2.0.0)

Imagick::contrastImage — Change 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::__construct
Imagick::contrastStretchImage
Imagick
PHP Manual