Method for calculating motion vectors, a method for encoding Images, method and apparatus for decoding images and calculation System of motion vectors

摘要

A method for calculating motion vectors to obtain greater speed of compression, which includes: a step of selection to select at least one of a Motion vector of a reference Block Reference; and a calculation step for calculating a Motion vector of a block Current that must be processed.Using the reference Motion Vector and selected in the selection step, the step of selection, when the reference Block has two reference motion vectors (S121), select one of the two reference motion vectors (S123 S124, based on whether the Block) Reference is located before or after the current block in the Temporary Order of Presentation,And when the Block Reference vector has only a reference Movement (S125, S127), select the reference Motion vector (S126, S128).