发明名称 |
Method of determining motion vectors for bi-predictive image block |
摘要 |
In one embodiment, the method includes determining a motion vector of a current image block equal to a motion vector of an image block based on a reference picture index indicating a reference picture for the image block. For example, the motion vector of the current image block may be equal to the motion vector of the image block if the reference picture index indicates a long-term reference picture for the image block. |
申请公布号 |
US8848796(B2) |
申请公布日期 |
2014.09.30 |
申请号 |
US201314080062 |
申请日期 |
2013.11.14 |
申请人 |
LG Electronics Inc. |
发明人 |
Jeon Byeong Moon |
分类号 |
H04N7/12;H04N11/02;H04N11/04;H04N19/577;H04N19/583;H04N19/103;H04N19/179;H04N19/17;H04N19/51;H04N19/503;H04N19/105;H04N19/159;H04N19/114;H04N19/61;H04N19/176;H04N19/87;H04N19/142;H04N19/172;H04N19/56;H04N5/14 |
主分类号 |
H04N7/12 |
代理机构 |
Harness, Dickey & Pierce |
代理人 |
Harness, Dickey & Pierce |
主权项 |
1. A method of determining and using motion vectors for a bi-predictive image block, the method performed by a moving picture coding system and comprising:
obtaining, by the moving picture coding system, a motion vector of a co-located image block for the bi-predictive image block; determining, by the moving picture coding system, motion vectors of the bi-predictive image block based on a temporal distance between a reference picture for the co-located image block and the bi-predictive image block, the temporal distance being one of a first type and a second type, the temporal distance of the second type being longer than the temporal distance of the first type, the determining step determining the motion vectors from the motion vector of a co-located image block according to a first set of expressions if the temporal distance is the first type andthe determining step determining the motion vectors from the motion vector of a co-located image block according to a second set of expressions if the temporal distance is the second type,the second set of expressions being different than the first set of expressions; and
decoding, by the moving picture coding system, the bi-predictive image block based on the determined motion vectors. |
地址 |
Seoul KR |