(PECL gmagick >= Unknown)
Gmagick::spreadimage — Randomly displaces each pixel in a block
public Gmagick::spreadimage ( float $radius ) : Gmagick
Special effects method that randomly displaces each pixel in a block defined by the radius parameter.
radius
Choose a random pixel in a neighborhood of this extent.
The Gmagick object on success
Throws an GmagickException on error.
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https://www.php.net/manual/en/gmagick.spreadimage.php