Patent ID: 9161057
Filing Date: 2015-10-13
Classification: H04N

Abstract:
1. A method of decoding video data, the method comprising: receiving an encoded bitstream; entropy decoding the encoded bitstream to generate quantized residual coefficients; inverse transforming the quantized residual coefficients to generate a residual block; determining a first prediction block form a reference frame in a first list; determining a second prediction block from a reference frame in a second list; generating a weighted prediction data that depends on at least the two prediction blocks from the reference frames in the two or more lists of data and includes at least two offsets and a rounding adjustment, wherein the weighted prediction data is generated approximately according to the following equation: wherein pred(i,j) is the weighted prediction data, pred0(i,j) and pred1(i,j) are the first and second prediction blocks, w0 and w1 are weight factors, o1 and o2 are the at least two offsets, and r and 2 adding the residual block and the weighted prediction data to obtain a reconstructed block; and outputting the reconstructed block as decoded video data.