METHOD AND APPARATUS FOR ENTROPY ENCODING USING HIERARCHICAL DATA UNIT, AND METHOD AND APPARATUS FOR DECODING

摘要

Disclosed are methods and apparatuses for video encoding and decoding. The video encoding method, according to the present invention, comprises: encoding a video on the basis of a hierarchical data unit; determining a context model to be used in entropy- encoding a syntax element of the data unit on the basis of at least one additional item of information of the data unit; and entropy-encoding the syntax element of the data unit using the determined context model.