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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
    (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
    current18:15, 10 December 2016Thumbnail for version as of 18:15, 10 December 20163,508 × 2,480 (1.63 MB)DzenanzConverted 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== 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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