Imagick::contrastImage

(PECL imagick 2, PECL imagick 3)

Imagick::contrastImageChange the contrast of the image

Description

public Imagick::contrastImage(bool $sharpen): bool

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.

Examples

Example #1 Imagick::contrastImage()

<?phpfunction contrastImage($imagePath, $contrastType) {    $imagick = new \Imagick(realpath($imagePath));    if ($contrastType != 2) {        $imagick->contrastImage($contrastType);    }    header("Content-Type: image/jpg");    echo $imagick->getImageBlob();}?>