Patent ID: 8130832
Filing Date: 2012-03-06
Classification: H04N

Abstract:
1. A video decoding device comprising: a decoder that decodes an encoded video bit stream to generate a prediction error signal; a motion compensator that performs a motion compensation prediction using a motion vector that refer at least one picture to generate a motion compensation prediction signal; a weighted predictor that generates a weighted prediction signal from a linear sum of (1) a product of the motion compensation prediction signal and a first weighting coefficient and (2) a second weighting coefficient; a selector that selects one of the motion compensation prediction signal and the weighted prediction signal; and an adder that adds (1) selected one of the weighted prediction signal and the motion compensation prediction signal and (2) the prediction error signal, wherein the selector selects the motion compensation prediction signal as the signal to be added to the prediction error signal, when a target picture subjected to the decoding by the decoder is a non-referenced picture referred by none of other pictures.