File:USM-How.gif

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USM-How.gif ‎(640 × 480 pixels, file size: 601 KB, MIME type: image/gif, looped, 5 frames, 5.0 s)

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
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Date 2008
Source Own work
Author Nevit Dilmen
Permission
(Reusing this file)
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
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/TimeThumbnailDimensionsUserComment
current21:54, 14 April 2008Thumbnail for version as of 21:54, 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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