(PECL gmagick >= Unknown) Enhance edges within the image

(PECL cairo >= 0.1.0) Establishes a new clip region from the current clip

(PECL gmagick >= Unknown) Returns the named image profile.

(PECL gmagick >= Unknown) Gets the depth of the image

(PECL imagick 2.0.0) Sets the image gamma bool

(PECL imagick 2.0.0) Changes the value of individual pixels based on a threshold

(PECL imagick 2.0.0) Extracts a region of the image

(PHP 4, PHP 5, PHP 7) Draw a string vertically

(PECL gmagick >= Unknown) Returns the configured fonts

(PECL imagick 2.0.0) Negates the colors in the reference image