Method and apparatus for encoding/decoding motion vector

摘要

Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.

主权项

1. A method of decoding an image, the method comprising:
obtaining a prediction mode information of a current block from a bitstream; determining motion vector predictor candidates from among motion vectors of adjacent blocks adjacent to the current block; and determining a motion vector predictor of the current block from among the motion vector predictor candidates based on prediction mode information of the current block, wherein the adjacent blocks comprise a first block outside the current block located adjacent and to the left of a leftmost block among blocks adjacent to a lower side of the current block and located adjacent and below a lowermost block among blocks adjacent to a left side of the current block.