Patent ID: 11924462
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A video decoding method, comprising:
determining a decoding order between a left lower block and a right lower block split from a current block according to encoding order information obtained from a bitstream, wherein the right lower block is adjacent to a right side of the left lower block;
when the right lower block is decoded prior to the left lower block according to the decoding order, determining context information for a syntax element of prediction mode information of the left lower block based on a sum of a value of prediction mode information of the right lower block, a value of prediction mode information of a left block adjacent to a left side of the left lower block, and a value of prediction mode information of an upper block adjacent to an upper side of the left lower block, wherein the prediction mode information of the left lower block indicates whether the left lower block is predicted in an intra prediction mode, wherein the prediction mode information of the right lower block indicates whether the right lower block is predicted in the intra prediction mode, wherein the prediction mode information of the left block indicates whether the left block is predicted in the intra prediction mode, and wherein the prediction mode information of the upper block indicates whether the upper block is predicted in the intra prediction mode;
obtaining a context index for the syntax element of the prediction mode information of the left lower block using the context information;
performing context-adaptive arithmetic entropy-decoding using the context index to obtain the prediction mode information of the left lower block; and
when the prediction mode information of the left lower block indicates that the left lower block is predicted in the intra prediction mode, determining prediction samples of the left lower block using at least one of the left block, the upper block, and the right lower block.