Position-based context selection for greater-than-one flag decoding and encoding

摘要

Methods of encoding and decoding for video data for encoding or decoding a sequence of greater-than-one flags for a coefficient group are provided. Context-based encoding and decoding selects a context for encoding or decoding the greater-than-one flag based upon the position of the greater-than-one flag in the sequence of greater-than-one flags. Selection of the context may also be based upon the position of the last-non-zero coefficient in the coefficient group.