Reduce Noise Appeared During Image Correction
 

 
Iscriviti alla newsletter:
   Prodotti   Download   Acquistare   Tutorial   Supporto   Chi siamo     Account dell'utente
en  fr  de  es  pt  it  jp  ru  
 

Tutorial: AKVIS Noise Buster

Reduce noise that appeared during image correction

 

Questa pagina al momento è usufruibile solo in lingua inglese.
Se desideri ottenere la licenza per la traduzione dei nostri testi (3-4) scrivici a team@akvis.com.
 

When you correct a dark photo you will often notice that as you "shed light" upon its underexposed areas the noise in the areas shows up more abundantly. You can't do anything about it. You can only struggle with these inevitable consequences of exposure correction. Besides, they are not so difficult to cope with.

Let's compare one and the same fragment before and after the filtration: on the left is the original dark photo, in the middle - the result of image correction with AKVIS Enhancer, on the right - the result of noise reduction with AKVIS Noise Buster.

The original dark photo After detail improvement After noise reduction

Let's take an underexposed photo and improve detail in the dark areas using AKVIS Enhancer. Pay attention to the people in the background - their faces are hardly visible.

Underexposed dark photo

Open the photo in a photo editor compatible with the plug-ins AKVIS Enhancer and AKVIS Noise Buster.

Call the AKVIS Enhancer plug-in (or use the standalone program) and adjust the settings: Shadows = 100, Highlights = 30, Level of Detail = 8, Lightness = 70.

The photo is dark, therefore we improve detail mostly using the parameters Shadows and Lightness. We set the maximum value for the first parameter and a bit higher value for the second parameter.

The parameter Level of Detail sets the degree of detail revealed. The higher the value of the parameter, the sharper the difference is between pixels having different colors. You can see more details, but the noise gets clearer, too. Earlier it was hidden in the shade, but the increase in Level of Detail made it manifest.

After the application of the plug-in with the above-mentioned settings the faces of the people in the background became visible, the noise became stronger too.

After AKVIS Enhancer

You can apply the AKVIS Noise Buster plug-in to get rid of the noise.

Call the plugin (or use the standalone edition) and adjust the parameters.

We mostly see the color noise in the photo (green and red blots, especially manifest on the skin). To reduce the color noise adjust the parameters Noise Level and Smooth Level in the Color Noise section. Set new values for the Luminance Noise too: increase the parameters Noise Level and Smooth Level for the Luminance Noise.

After the filtration the color blots have disappeared and the skin looks smooth.

After the noise reduction

 

 
Funzionamento Funzionamento
   — Area di lavoro — Area di lavoro
   — Come usare il programma — Come usare il programma
   — Elaborazione batch — Elaborazione batch
   — Preferenze — Preferenze
Esempi Esempi
   — Ragazza da copertina — Ragazza da copertina
   — Rimozione dell'effetto moiré da scansioni — Rimozione dell'effetto moiré da scansioni
   — Riduzione del rumore da una foto di studio — Riduzione del rumore da una foto di studio
   — Eliminazione del rumore cromatico — Eliminazione del rumore cromatico
   — Sensibilità ISO e rumore digitale — Sensibilità ISO e rumore digitale

 

Noise Buster v. 9.0 - 10-giorni di prova gratuita:  Download

 

ritorna sopra

 

   Informativa sulla privacy | Cerca nel sito | Contatti    
   Twitter | Facebook | YouTube | Forum    
| English  | Français  | Deutsch  | Español  | Português(Br)  | Italiano  | 日本語  | Pусский  | © 2004-2014 AKVIS. Tutti i diritti riservati.