Imagick::contrastImage

(PECL imagick 2.0.0)

Imagick::contrastImage — Change the contrast of the image

Description

bool Imagick::contrastImage ( bool $sharpen )

Warning

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

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

The sharpen value

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.