Video decoder embedded with temporal LMMSE denoising filter

Under noisy circumstance, the encoded video can be corrupted by noise and the decoded video may be very noisy. In this paper, a novel scheme is proposed for decoding noisy video bitstreams. First a temporal linear minimum mean squared error (LMMSE) estimator for video denoising is presented. Based on the analysis of hybrid video decoder, this temporal LMMSE denoising filtering is seamlessly embedded into hybrid video decoding process. The operations performed for denoising are very few, and the total complexity of the proposed scheme is very similar to that of a regular decoder. Experimental results show that compared to the standard decoder, with the proposed scheme, the subjective quality of the decoded video can be significantly improved