Sharpen FiltersSharpens the images |
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| Sharpening | Sharpening filter focuses blurry images by increasing the contrast of the adjacent pixels, with a specific radius and by a specific amount. |
| Unsharp Mask | Unsharp Mask locates the pixels that differ in value from surrounding pixels by the threshold which is specified by the user and increases the pixels' contrast by an amount which is also specified by the user, so that for the neighboring pixels specified by the threshold, the lighter pixels becomes even lighter and the darker pixels becomes even darker based on the specified amount. |
| Unsharp Mask Edges | Unsharp Mask Edges detects edges in an image. After that it applies Unsharp Mask to the edge-pixels with small blur. |