The lightening contrast level.
The brightness level. The value ranges between 0.0 (original) and 1.0. The default value is 0.7.
The redness level. The value ranges between 0.0 (original) and 1.0. The default value is 0.1. This parameter adjusts the red saturation level.
The sharpness level. The value ranges between 0.0 (original) and 1.0. The default value is 0.5. This parameter is usually used to remove blemishes.
Sets the image enhancement options.