CPC H04N 19/139 (2014.11) [H04N 19/105 (2014.11); H04N 19/172 (2014.11); H04N 19/537 (2014.11); H04N 19/573 (2014.11); H04N 19/577 (2014.11)] | 20 Claims |
1. A method, comprising:
decoding, from a compressed bitstream, a motion vector for a current block of a current frame;
identifying a location of a reference block within an un-generated reference frame;
generating the reference block using a forward reference frame and a backward reference frame without generating the un-generated reference frame by:
identifying an extended reference block by extending the reference block at each boundary of the reference block by a number of pixels related to a filter length of a filter used in sub-pixel interpolation; and
generating pixel values of only the extended reference block by performing a projection using the forward reference frame and the backward reference frame without generating the whole of the un-generated reference frame; and
decoding the current block based on the reference block and the motion vector.
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