Imagick::contrastImage

(PECL imagick 2.0.0)

Change the contrast of the image

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

Returns:

Returns TRUE on success.

Exception:

Throws ImagickException on error.

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();
}
 
?>

Links:

http://php.net/manual/en/imagick.contrastimage.php

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2025-01-10 15:47:30

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