Not at a computer I can test at the moment, but perhaps Imagick::FILTER_SPLINE ?<p><a href="https:&#x2F;&#x2F;github.com&#x2F;mkoppanen&#x2F;imagick&#x2F;blob&#x2F;3.3.0&#x2F;imagick_helpers.c#L944" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mkoppanen&#x2F;imagick&#x2F;blob&#x2F;3.3.0&#x2F;imagick_help...</a>