Imagick::contrastImage

Change the contrast of the image

Description

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.

Parameters

sharpen

The sharpen value

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

Examples

Example #1 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();
}

?>