发明名称 |
Method and apparatus for encoding and decoding motion vector by predicting motion vector according to mode |
摘要 |
Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding a motion vector includes: selecting a mode from among a first mode in which information indicating a motion vector predictor of at least one motion vector predictor is encoded and a second mode in which information indicating generation of a motion vector predictor based on pixels included in a previously encoded area adjacent to a current block is encoded; determining a motion vector predictor of the current block according to the selected mode and encoding information about the motion vector predictor of the current block; and encoding a difference vector between a motion vector of the current block and the motion vector predictor of the current block. |
申请公布号 |
US9106924(B2) |
申请公布日期 |
2015.08.11 |
申请号 |
US201414524355 |
申请日期 |
2014.10.27 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
Lee Tammy;Han Woo-jin;Min Jung-hye |
分类号 |
H04N7/12;H04N19/513;H04N19/33;H04N19/105;H04N19/52;H04N19/139;H04N19/176;H04N19/70;H04N19/147;H04N19/51;H04N19/96;H04N19/103;H04N19/44 |
主分类号 |
H04N7/12 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. An apparatus of decoding a motion vector, the apparatus comprising:
an encoding information extractor which obtains prediction mode information of a current block from a bitstream; and an image data decoder which obtains motion vector predictor candidates of the current block using a block co-located with the current block in a temporal reference picture in direction List0 or List1 when the prediction mode information of the current block indicates inter-prediction, obtains a motion vector predictor of the current block among the obtained motion vector predictor candidates based on information indicating a motion vector predictor used for the current block, and obtains a motion vector of the current block based on the obtained motion vector predictor and a differential vector obtained from the bitstream, wherein the image data decoder scales a motion vector of the block co-located with the current block in the temporal reference picture based on a first temporal distance and a second temporal distance, the first temporal distance indicates a temporal distance between a reference picture referred to by the block co-located with the current block in the temporal reference picture and the temporal reference picture, and the second temporal distance indicates a temporal distance between a current picture and a reference picture referred to by the current block, wherein an image is split into a plurality of maximum coding units according to information about a maximum size of a coding unit, a maximum coding unit, among the plurality of maximum coding units, is hierarchically split into one or more coding units of depths including at least one of a current depth and a lower depth, and the current coding unit of the current depth is one of rectangular data units split from a coding unit of an upper depth. |
地址 |
Suwon-si KR |