Moving picture coding method and apparatus with candidate motion vectors

摘要

A moving picture coding method for coding a current block derives a first candidate having a first motion vector predictor derived from a first motion vector that has been used to code a first block. It is determined whether a total number of one or more candidates having the first candidate is less than a maximum candidate number, and a second candidate having a second motion vector predictor is derived when the total number of the one or more candidates having the first candidate is less than the maximum candidate number. The second motion vector predictor is a zero vector. A candidate for coding the current block is selected out of the plurality of candidates having the first candidate and the second candidate.

主权项

1. A moving picture coding method for coding a current block, comprising:
deriving a first candidate having a first motion vector predictor derived from a first motion vector that has been used to code a first block; determining whether a total number of one or more candidates having the first candidate is less than a maximum candidate number; deriving a second candidate having a second motion vector predictor when the total number of the one or more candidates having the first candidate is less than the maximum candidate number, the second motion vector predictor being a zero vector; coding an index corresponding to a candidate having a motion vector predictor; and generating a bitstream having the coded index, wherein the maximum candidate number is used to code the index, and wherein the candidate is one of a plurality of candidates having the first candidate and the second candidate.