Sharpening

page four
Here, I have set the Radius value at 26 pixels. This means that 26 pixels around each edge were affected by the 450 % sharpening effect.
     The way the unsharp mask sharpens, by making the dark pixels darker and the light pixels lighter, is demonstrated here.
     Actually, the Unsharp Mask procedure is more complicated than that, but that’s part of what it does. In reality, it involves a mask, a duplicate image which you never see, and a Gaussian Blur. 		next
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Displacing Textures 		On the next page, I did a proper, moderate amount of sharpening on the peach and will show you how an image is improved by this filter.
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Copyright © 2004 by Jay Arraich.
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All photographs copyright © 2004 by Jay Arraich
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