Entropy decoding method using context information

摘要

The present invention relates to an entropy decoding method and to a decoding apparatus using same. The entropy decoding method according to the present invention comprises: a step of decoding a bin of a syntax element; and a step of acquiring information on the syntax element based on the decoded bin. In the step of decoding the bin, context-based decoding or bypass decoding is performed for each bin of the syntax element.

主权项

1. An entropy decoding method based on a context adaptive binary arithmetic coding, the method comprising:
deriving, by a decoding apparatus, context information on at least one bin among bins of a bin string for an intra_chroma_pred_mode syntax element; decoding, by the decoding apparatus, the bins of the bin string, wherein a regular decoding is performed for the first bin among the bin string based on the context information and a bypass decoding is performed for the remaining bins among the bin string; deriving, by the decoding apparatus, a value of the intra_chroma_pred_mode syntax element based on the decoded bins; and generating, by the decoding apparatus, prediction samples based on the value of the intra_chroma_pred_mode syntax elements.