Patent ID: 8023761

Claim:
An apparatus for removing a noise of a video signal, comprising: a spatial noise level estimation unit estimating a level of a spatial noise included in the video signal using a characteristic of a distribution of the noise and a distribution of the video signal; a temporal noise level estimation unit estimating a level of a temporal noise included in the video signal using a frame difference between two temporally consecutive videos; a global motion detection unit selecting to output one of the levels of the noises estimated by the spatial and temporal noise level estimation units, respectively according to a motion degree between the two temporally consecutive videos; a spatial filtering unit removing to output a spatial noise included in an input video using a level of an inputted temporal noise; a temporal filtering unit removing the noise included in the video signal using the levels of the noises estimated by the temporal and spatial noise level estimation units, respectively; a noise removal unit removing the noise included in the video signal using the corrected level of the noise; and a video signal storing unit delaying to output the video signal outputted through the spatial filtering unit.