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Reducing Noise

Author: FotoFects Author's URL: http://www.fotofects.com More by this author
Added:Nov 18, 2005 Rating:   Level: Beginner Software: Photoshop  

image 1 1. Open an image to edit.
image 2 2. Change the blending mode to Lab Color (Image> Mode> Lab Color).
image 3 3. In the Channels pallet (Window> Channels), select the chroma a channel (Ctrl+2).
image 4 4. Use the Gaussian Blur tool (Filter> Blur Gaussian Blur) and use the a radius that will remove most of the noise.
image 5 5. Select the chroma b channel (Ctrl+3) and apply the previous filter again (Ctrl+F).
image 6 6. Select the Lightness channel (Ctrl+1) and use the Reduce Noise tool (Filter> Noise> Reduce Noise) tool to reduce the noise.

If you are using Photoshop CS or under, use the Despeckle filter (Filter> Noise> Despeckle) to reduce the noise. If required, apply the Despeckle filter again (Ctrl+F).
image 7 7. Change the image mode back to RGB (Image> Mode> RGB).
Reducing Noise 8. Use the Unsharp Mask tool (Filter> Sharpen> Unsharp Mask) to sharpen the image. Rollover the image to see the original image without this Photoshop effect applied.