Noise reduction with NeatImage

casuaris casuaris
Photo Information
Copyright: Annick Vanderschelden (vanderschelden) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2553 W: 74 N: 7464] (30441)
Genre: Animals
Medium: Color
Date Taken: 2006-08-30
Photo Version: Original Version, Workshop
Edited by: Adrian Warren (AdrianW) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 257 W: 185 N: 215] (710)
Edited Image Upload Date: 2006-08-31 08:45:14
Categories: Birds
Camera: Canon 350D (Digital Rebel XT)
Workshop Note
Load the pic into NeatImage, then click on the DeviceNoiseProfile tab. Since the image was captured in RGB, I'd switch the WorkingColorSpace to RGB.

Find an area without any important detail - the background to the right of his head is good - now select it by dragging a box. You'll get a warning about the RGB values not being uniform, ignore that - for the best noise profile you want an area without any detail at all, just noise - but there aren't any areas like that in the image.

Now go to the NoiseFilterSettings tab and draw a big box to see the effect of our current filter settings. Not pretty was it? That's due to the non-uniform profile area. It's fixable though! Look at the image again, you'll see that the noise is fine or medium - there aren't many large blotches, so under NoiseReductionAmounts set the Low slider to 0%. Looks a bit better doesn't it? Now play with each of the sliders in turn - try them at 0, wait for it to redraw, then try at 100. Now you know what the slider does - try finding the optimal value for it :)

Load back into Photoshop on top of the original image - turn the Layer on and off to see what effect we've had. In this case the results were mostly positive, except for a bit of detail lost around the edges - so use a soft-edged eraser to knock that out.

Finally SmartSharpen 75%, 0.8px, 0 to bring out the fine detail :)
Ratings
livios, marjan, Kaszek, marmottelolo, Gerson, SunToucher, SkyF, Biswarup, vanderschelden, mperla, claudine, greenpinkorange, Hormon_Manyer, methos, joey, rousettus has marked this workshop as useful.
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Discussions
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(AdrianW) Workshop: casuaris casuarisvanderschelden 1 08-31 10:32
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