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What is USM abbreviation

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Old 03-18-2010, 04:12 PM
DJM DJM is offline
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Join Date: Mar 2010
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What is USM abbreviation

HI . Is there someplace here in RP (RetouchPRO ) that explains what abbreviations mean when found in a thread . I have a problem understanding some tut's when they are used . As an example usm . I know it makes typing faster , unfortunately I for one miss out on what is being explained .
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Old 03-18-2010, 04:32 PM
BillFrey BillFrey is offline
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Re: What is USM abbreviation

Unsharp Mask

Found under Filter/Sharpen/ in CS2.
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Old 03-18-2010, 05:16 PM
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0lBaldy 0lBaldy is offline
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Re: What is USM abbreviation

this thread has a lot of abbreviation meanings: abbrev. thesrs... or What are you talking about?
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Old 03-18-2010, 11:31 PM
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Pictus Pictus is offline
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Re: What is USM abbreviation

Also look
"Unsharp masking (USM) is an image manipulation technique, often available in digital image processing software. It was first used in Germany in the 1930s as a way of increasing the acutance, or apparent sharpness, of photographic images.[citation needed] The "unsharp" of the name derives from the fact that the technique uses a blurred, or "unsharp," positive to create a "mask" of the original image.[1] The unsharped mask is then combined with the negative, creating the illusion that the resulting image is sharper than the original. From a signal-processing standpoint, an unsharp mask is generally a linear or nonlinear filter that amplifies high-frequency components."
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Old 03-19-2010, 06:31 AM
DJM DJM is offline
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Join Date: Mar 2010
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Re: What is USM abbreviation

Awesome , many thanks to all . I shall print off this info now .
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