Unsharp Mask

Simple Unsharp Mask Filter (Color and Grayscale)

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Parameters :

• Radius
Affects the size of the edges to be enhanced or how wide the edge rims become, so a smaller radius enhances smaller-scale detail.

• Amount
Controls the magnitude of each overshoot (how much darker and how much lighter the edge borders become).

• Threshold
Controls the minimum brightness change that will be sharpened or how far apart adjacent tonal values have to be before the filter does anything.