Digikam/Noise Reduction/da: Difference between revisions

Revision as of 06:48, 3 March 2011

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Støjreducering i digiKam

Fra Mohamed Maliks blog, 12. februar 2011

Alle DSLR-kameraer introducerer støj i en eller anden grad. Dette gælder især almindelige kameraer til ikke-professionelt brug, selv om disse har ret god ISO-ydelse op til omkring ISO 800.

Jeg bruger et Nikon D3000 og dets ISO-ydelse er god op til ISO 800. ISO 1600 er god og kan bruges i små størrelser; men billeder i ISO 3200 bliver kornede og støjreducering skal anvendes.

Hvis du bruger digiKam, så har det en god støjreduceringsfunktion. Dobbeltklik på et billede som du vil reducere støj i, højreklik så på det og vælg Redigér; eller tast F4 for at opnå det samme.

Herefter vil du komme til redigeringsvinduet.

From here go to Enhance -> Noise Reduction and you will be presented with this window.

Choose from the settings or you can choose your own settings. Here is a picture of before and after from my tests. They are much more usable and better looking after the noise reduction has been applied.

Before Noise Reduction Was Applied:

After Noise Reduction Was Applied:

Here is another picture in which the noise reduction was applied:

After:

Tip

Matthias Welwarsky added "What I like most about the denoise tool is that I can apply separate amounts of reduction on luma and chroma. This helps a lot in preserving detail while giving a smooth color impression. Luminance noise becomes grain and color blotches are eliminated."

@@ Line 9: / Line 9: @@
 Hvis du bruger '''digiKam''', så har det en god støjreduceringsfunktion. Dobbeltklik på et billede som du vil reducere støj i, højreklik så på det og vælg <menuchoice>Redigér</menuchoice>; eller tast <keycap>F4</keycap> for at opnå det samme.
-After this you will be presented with the editor view.
+Herefter vil du komme til redigeringsvinduet.
 From here go to <menuchoice>Enhance -> Noise Reduction</menuchoice> and you will be presented with this window.