Patent ID: 11889068
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A non-transitory computer-readable storage medium storing a bitstream generated by a method, the method comprising:
determining that an intra prediction is applied for a current block;
generating prediction related information;
deriving a reference sample line index of a current block;
generating information on the reference sample line index;
configuring a most probable mode (MPM) list for the current block;
deriving an intra prediction mode of the current block based on the MPM list;
generating MPM related information of the current block; and
generating the bitstream by encoding image information including the prediction related information, the information on the reference sample line index and the MPM related information,
wherein the MPM list is configured based on a first intra prediction mode of a left neighboring block of the current block and a second intra prediction mode of a top neighboring block of the current block,
wherein the MPM list comprise a first MPM candidate, a second MPM candidate, a third MPM candidate, a fourth MPM candidate and a fifth MPM candidate,
wherein based on a case that a mode value of the first intra prediction mode is equal to a mode value of the second intra prediction mode and the mode value of the first intra prediction mode is greater than a mode value of a DC mode,
a mode value of the first MPM candidate is equal to the mode value of the first intra prediction mode,
a mode value of the second MPM candidate is equal to a result of an equation of (L+61)%64+2, L being the mode value of the first intra prediction mode,
a mode value of the third MPM candidate is equal to a result of an equation of (L−1)%64+2,
a mode value of the fourth MPM candidate is equal to a result of an equation of (L+60)%64+2, and
a mode value of the fifth MPM candidate is equal to a result of an equation of (L)%64+2.