# Imagick::contrastImage

(No version information available, might be only in CVS)

Imagick::contrastImage — Change the contrast of the image

### Description

bool Imagick::contrastImage ( bool `$sharpen` )
Warning

This function is currently not documented; only the argument list is available.

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

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.

### Parameters

`sharpen`

### Return Values

Returns `TRUE` on success.