Imagick::contrastImage

Change the contrast of the image

&reftitle.description; public `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.

&reftitle.parameters;

`sharpen`

- The sharpen value

&reftitle.returnvalues;

&imagick.return.success;

&reftitle.errors;

&imagick.imagick.throws;

&reftitle.examples;

### `Imagick::contrastImage`

    <?php
    function contrastImage($imagePath, $contrastType) {
        $imagick = new \Imagick(realpath($imagePath));
        if ($contrastType != 2) {
            $imagick->contrastImage($contrastType);
        }

        header("Content-Type: image/jpg");
        echo $imagick->getImageBlob();
    }

    ?>