Method and apparatus for noise reduction of video signals

An apparatus for noise reduction adoptable in a digital video signal processing, the apparatus comprising:

• an adaptive spatial filter for receiving a video signal and generating a basic signal after the video signal is undergone an adaptive spatial filtering;
• a spatial filter set for dividing the basic signal into a number of N bandwidth divisions of spatial domain signals, where N is a natural number;
• N number of adaptive temporal filters for performing an adaptive temporal filtering on each of the spatial domain signals corresponding to each of the adaptive temporal filters respectively, so as to generate a temporal filtered signal;
• N number of noise estimators for performing a noise estimation on the temporal filtered signal corresponding to each of the noise estimators, and generating a corresponding feedback signal in order to control the corresponding adaptive temporal filtering;
• and
• a summator for summing up all of the temporal filtered signals to a processed video signal.