METHOD AND APPARATUS FOR ENCODING MOTION VECTOR

摘要

PURPOSE: A method and an apparatus for encoding a motion vector are provided to encode a motion vector of a current block based on a prediction motion vector determined according to a selected mode. CONSTITUTION: A prediction unit(910) selects a first or second mode, wherein the first mode encodes the information indicating a prediction motion vector of a motion vector predictor and the second mode encodes the information indicating the generation of a prediction motion vector based on a block or pixel included in an region encoded previously prior to the current block. Based on the selected mode, the prediction motion vector of the current block is determined. A first encoding unit(920) encodes the information on the prediction motion vector of the determined current block based on the selected mode, and a second encoding unit(930) encodes the different vector between the motion vector of the current block and the prediction motion vector of the current block.