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Denoising

The process of removing noise from a video signal.

Video denoising is the process of removing noise from a video signal. Video denoising methods can be divided into:

  • Spatial video denoising methods, where image noise reduction is applied to each frame individually.
  • Temporal video denoising methods, where noise between frames is reduced. Motion compensation may be used to avoid ghosting artifacts when blending together pixels from several frames.
  • Spatial-temporal video denoising methods use a combination of spatial and temporal denoising. This is often referred to as 3D denoising.

It is done in two areas:

They are chroma and luminance, chroma noise is where one sees color fluctuations and luminance is where one sees light/dark fluctuations. Generally, the luminance noise looks more like film grain while chroma noise looks more unnatural or digital like.

Key Terms

definition
luminance
methods
noise
process
spatial video
usage
video
video denoising
video signal

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Denoising
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Sources & Credits

Last modified on May 20 2020
Content adapted from Wikipedia
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