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How To Reduce Noise In Photos With GIMP

Even the best digital cameras cannot prevent pixel noise from occurring in photographs taken using a higher ISO. Luckily, GIMP can help to reduce the amount of noise present in your images. Below you will find instructions on how to de-noise images both manually and automatically with GIMP.

1. Manually

  • Select a small Paint Brush from the toolbox.
  • Retouch bad pixels by holding down the Ctrl button while clicking on the spot near the pixel you are trying to retouch.
  • Now paint over the bad pixel with a color that will blend well.

Note: The Magic Pencil tool works well to retouch small pixel errors and the Smudge tool will also work to blur hot pixels manually.

2. Automatically

  • Start by duplicating the original layer of the image. This is the layer you will use to retouch the image.
  • Now change the layer mode to Value mode.
  • Select Filters > Enhance > Despeckle to remove the noisy pixels automatically.
  • Now click Filters > Enhance > Sharpen to adjust the sharpness of your image. (Since using the Despeckle filter blurs your image.)

For more tutorials on how to reduce noise in images using GIMP click here:

http://www.gimp.org/tutorials/Reducing_CCD_Noise/

http://www.2morrow.dk/75ppi/coolpix/actions/

For a discussion page on noise reduction using GIMP click here:
http://www.gimpchat.com/viewtopic.php?f=28&t=6434

For a video tutorial on how to reduce noise with GIMP click here:

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