发明名称 |
Motion vector prediction in video coding |
摘要 |
A method and apparatus is disclosed herein for motion vector prediction and coding. In one embodiment, the method comprises: deriving N motion vector predictors for a first block that has N motion vectors corresponding to N lists of reference frames and a current frame, including constructing one of the N motion vector predictors when a second block that neighbors the first block and is used for prediction has at least one invalid motion vector, where N is an integer greater than 1; generating N differential motion vectors based on the N motion vectors and N motion vector predictors; and encoding the N differential motion vectors. |
申请公布号 |
US9060176(B2) |
申请公布日期 |
2015.06.16 |
申请号 |
US201012890400 |
申请日期 |
2010.09.24 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
Bossen Frank J.;Kanumuri Sandeep |
分类号 |
H04N7/26;H04N19/577;H04N19/52;H04N19/573;H04N19/00 |
主分类号 |
H04N7/26 |
代理机构 |
Blakely, Sokoloff, Taylor & Zafman LLP |
代理人 |
Blakely, Sokoloff, Taylor & Zafman LLP |
主权项 |
1. A method comprising:
deriving N motion vector predictors for a first block that has N motion vectors corresponding to N lists of reference frames and a current frame, including constructing one of the N motion vector predictors when a second block that neighbors the first block and is used for prediction has at least one invalid motion vector, where N is an integer greater than 1, wherein constructing one of the N motion vector predictors in a first list of the N lists is performed by applying a function to another of the other N motion vector predictors in a second list of the N lists different than the first list and signed temporal distances from the current frame to the reference frames associated with each motion vector in the N motion vectors of the first block; generating N differential motion vectors based on the N motion vectors and N motion vector predictors; and encoding the N differential motion vectors. |
地址 |
Tokyo JP |