(PECL imagick 2, PECL imagick 3)
Imagick::previewImages — Quickly pin-point appropriate parameters for image processing
Tiles 9 thumbnails of the specified image with an image processing operation applied at varying strengths. This is helpful to quickly pin-point an appropriate parameter for an image processing operation.
Restituisce true
in caso di successo.
Lancia una ImagickException in caso di errore.