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File:Usm-unsharp-mask.png

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English: Unsharp mask (USM). USM applied to lower part of image. Radius:50, Amount:3, Threshold:0. Areas neighbor to dark colors are lightened, areas neighbor to light colors are darkened. PNG Save is lossless. Any artefacts seen are due to USM itself.
 
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Date 2008
Source Own work
Author Nevit Dilmen
Permission
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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
current18:15, 10 December 2016Thumbnail for version as of 18:15, 10 December 20163,508 × 2,480 (1.63 MB)Dzenanz (talk | contribs)Converted image from RGBA8 to grayscale8 (reducing size).
22:26, 14 April 2008Thumbnail for version as of 22:26, 14 April 20083,508 × 2,480 (5.5 MB)Nevit (talk | contribs)== Summary == {{Information |Description= {{en|Unsharp mask (USM). USM applied to lower part of image. Radius:50, Amount:3, Threshold:0. Areas neighbor to dark colors are lightened, areas neighbor to light colors are darkened. PNG Save is lossles. Any art

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