Common operations

These commands apply to image, text and solid color layers. They are also generally useful for composite images and simple, non-layered image requests.

op_blur	Blurs the layer.
op_brightness	Adjusts the layer brightness.
op_colorbalance	Adjusts red, green, blue independently.
op_colorize	Colorizes the layer data.
op_contrast	Adjusts the contrast.
op_hue	Shifts the hue of all colors.
op_invert	Invert colors.
op_noise	Adds noise to the layer.
op_saturation	Adjusts the color saturation.
op_sharpen	Applies simple sharpening.
op_usm	Applies unsharp-masking.
flip	Flips the layer horizontally and/or vertically.
rotate	Rotates the layer.
perspective	Perspective-transform the layer.
clipPath	Specifies clip shape(s) for the layer.
clipXPath	Specifies inverted clip shape(s) for the layer.