The Sharpen component enhances the edges in the source image, making it look sharper. This is a map component, it can be located in the Processing category on the Components Bar. Sharpen is a bitmap-based component – in order to produce the output image, it renders a bitmap version of the source image. Using bitmap-based components in a filter can increase its rendering time, and, in some cases, degrade the quality of the final image, so Sharpen should be used only when necessary. This component can output HDR colors.
Source: Map Input (HDR), Required
Provides the source image for sharpening. This is a required input – to make Sharpen work, this input must be connected. This input can accept HDR colors.
Amount: Map Input
Sets the sharpening strength. Amount of 0 produces no effect, and the value of 100 results in maximum sharpening. Since Amount is a map input, its value can be controlled separately for different image areas by connecting a map component to this input.
Preserve Color: Map Input
When turned on, the adjustment affects only the lightness of the source image, leaving its hue and saturation unchanged. For more information, see Preserve Color: How It Works. When a map component is connected to this input, the state of the checkbox is determined separately for different image areas by the brightness level of the image supplied by that component. The brightness level of 0 to 50 corresponds to unchecked Preserve Color, and the level of 50 to 100 corresponds to checked Preserve Color.
Adjusts the sharpening radius. Radius is measured as a percentage of the global Size value divided by 20. For example, if Size is set to 600 pixels, and Radius is set to 10, the actual sharpen radius will be 3 pixels.
