Patent ID: 8472787

Claim:
A method for detecting a noise value of a video signal, comprising: determining a spatial domain difference of the video signal according to a plurality of pixels of a first frame of the video signal; determining a plurality of pixels of a second frame of the video signal according to a calculated degree of similarity relative to the pixels of the first frame; determining a temporal domain difference of the video signal according to the pixels of the first frame of the video signal and the plurality of pixels of the second frame of the video signal, wherein the temporal domain difference is determined according to a sum of pixel differences corresponding to pixels of a first block in the first frame and pixels of a most similar block among a plurality of second blocks in the second frame; wherein the plurality of pixels of the second frame are determined according to a motion vector relative to the pixels of the first frame; and wherein the second frame is temporally adjacent to the first frame; and generating a noise value of the first frame according to a weighted combination of the spatial domain difference and the temporal domain difference, wherein the second frame is temporally adjacent to the first frame.