METHOD AND APPARATUS FOR ENCODING MOTION INFORMATION, AND METHOD AND APPARATUS FOR DECODING SAME

摘要

A method and apparatus for encoding and decoding motion information. The encoding method includes determining whether motion information of spatial prediction units that are spatially collocated to a current prediction unit and motion information of temporal prediction units that are temporally collocated to the current prediction are available; when the number of the motion information of the spatial prediction units and the motion information of the temporal prediction units is less than a predetermined number, generating additional candidate motion information by using the available motion information of the spatial prediction units and the motion information of the temporal prediction units such that the total number of pieces of candidate motion information is the predetermined number; and decoding motion information of the current prediction unit by using the ‘n’ pieces of motion information.

主权项

1. A method of decoding an image, the method comprising:
obtaining a prediction mode of a current block, from a bitstream; when the prediction mode of the current block is inter-prediction, obtaining a motion vector predictor candidate list; adding, when a number of motion vector predictor candidates in the motion vector predictor candidate list is smaller than a predetermined number n (n is an integer), a zero vector to the motion vector predictor candidate list so that the number of the motion vector predictor candidates is to be the predetermined number n; and obtaining a motion vector predictor of the current block based on information indicating a motion vector predictor among the motion vector predictor candidate list, wherein a spatial motion vector predictor candidate in the motion vector predictor candidate list is obtained from neighboring blocks including a lower left block located on a lower left side of the current block, and wherein, when a first spatial motion vector predictor candidate is equal to a second spatial motion vector predictor candidate, the second spatial motion vector candidate is removed from the motion vector predictor candidate list.