Image:USM-How.gif

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[edit] Summary

Description
English: How Unsharp mask (USM) works.
1.Frame: Original image
2.Frame: Original image unsharped (Blurred)
3.Frame: Second frame inverted
4.Frame: Inverted (3) frame's difference from original (1) frame.
5.Frame: Difference (4) frame, overlayed on original (1) frame. Masked
This raster graphics image was created with GIMP.
Source

self-made
Date

2008
Author

Nevit Dilmen
Permission
(Reusing this image)
Public domain I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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Date/TimeDimensionsUserComment
current21:54, 14 April 2008640×480 (601 KB)Nevit (== Summary == {{Information |Description= {{en|Unsharp mask (USM). USM applied to lower part of image. Radius:50, Amount:3, Threshold:0. Jpg save Quality:90% Areas neighbor to dark colors are lightened, areas neighbor to light colors are darkened. Any oth)
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