Sharpens paint in all unmasked regions of the active image layer.
Controls the amount of sharpening. The valid range is 0 (no sharpening) to 10 (maximum sharpening).
Each pixel in the image layer is sharpened by comparing it with a certain number of its surrounding pixels based on the Sharpen Strength value. For example, if Sharpen Strength is set to 4, then each pixel is sharpened by comparing it with all surrounding pixels within a 4-pixel radius. The valid range is 0 - 4.
