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Unsharp mask


Amount determines how much to increase the contrast of pixels. Typically 20 – 30%

Radius is used to identify how many pixels around edges to sharpen. Typically 40 -70

Threshold determines how far pixels must be from surrounding area in order to be considered an edge. Anything greater than 0 is useless.

Amount = 20 (also try 25 & 30)
Radius = 50
Threshold = 0

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