Salt-and-pepper noise

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File:Noise salt and pepper.png
An image with salt-and-pepper noise

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For other uses, see Salt and pepper (disambiguation).

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See also: Salt and pepper

Salt-and-pepper noise is a form of noise sometimes seen on images. It presents itself as sparsely occurring white and black pixels. An effective noise reduction method for this type of noise is a median filter[1] or a morphological filter.[citation needed] For reducing either salt noise or pepper noise, but not both, a contraharmonic mean filter can be effective.[2]

References

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