public background (mixed $color, [mixed $opacity]) Set the background color of an image

abstract public render ([mixed $ext], [mixed $quality]) ...

Source on

integer AUTO

public watermark (Phalcon\Image\Adapter $watermark

public crop (mixed $width, mixed $height, [mixed $offsetX], [mixed $offsetY]) Crop an image

public sharpen (mixed $amount) Sharpen the image by a given amount

integer TENSILE

abstract public reflection (mixed $height, [mixed $opacity], [mixed $fadeIn]) ...

public flip (mixed $direction) Flip the image along the horizontal or vertical axis