Das während der Bildkorrektur enstehende Rauschen entfernen
Wenn Sie ein unterbelichtetes Foto 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 take an underexposed photo and improve detail in the dark areas using AKVIS Enhancer. Pay your attention to the people in the background - their faces are hardly visible.
Öffnen Sie das Foto mit Ihrer Bildbearbeitugssoftware compatible with the plug-ins AKVIS Enhancer and AKVIS Noise Buster.
Rufen Sie das Plugin AKVIS Enhancer auf und passen die Parameter an.
Das Foto ist unterbelichtet, deshalb verbessern wir die Detailgenauigkeit meistens mit den Parameter Details im Schatten (Shadows) und Beleuchtungsstärke (Lightness). We set the maximum value for the first parameter and a bit higher value for the second parameter.
Der Parameter Detailstufe (Level of Detail) bestimmt the degree of detail revealing. The higher the value of the parameter, the sharper is the difference 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.
You can apply the AKVIS Noise Buster plug-in to get rid of the noise.
Call the plug-in and adjust the parameters.
We mostly see the color noise on 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 and increase the value of the parameter Sharpen Edges.
After the filtration the color blots have disappeared and the skin looks smooth.
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.
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