Howtosignalprocessing
What causes noise in videos?
Video noise is a common problem in video clips shot in low-light conditions or with small-sensor devices such as smartphones or action cameras. Video noise is typically a result of digital gain and appears as unwanted grain or artifacts in the video image.
What is spatial denoise?
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.
