Video denoising is the process of removing noise from a video signal. Video denoising methods can be divided into:
It is done in two areas:
They are chroma and luminance, chroma noise is where one see color fluctuations and luminance is where one see light/dark fluctuations. Generally, the luminance noise looks more like film grain while chroma noise looks more unnatural or digital like.[2]
Video denoising methods are designed and tuned for specific types of noise. Typical video noise types are following:
Different suppression methods are used to remove all these artifacts from video.