階層的構造のデータ単位を利用したエントロピー符号化方法及び該装置、並びに復号化方法及び該装置

摘要

Provided are video encoding and decoding methods and apparatuses. The video encoding method includes: encoding a video based on data units having a hierarchical structure; determining a context model used for entropy encoding a syntax element of a data unit based on at least one piece of additional information of the data units; and entropy encoding the syntax element by using the determined context model.