Patent ID: 11968392
Assignee: LG ELECTRONICS INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A transmission method of data for image, the method comprising:
obtaining a bitstream of image information including residual information, a Block-based Delta Pulse Code Modulation (BDPCM) flag, and a BDPCM direction flag for a current block; and
transmitting the data including the bitstream of the image information including the residual information, the BDPCM flag and the BDPCM direction flag,
wherein the BDPCM flag represents that BDPCM is applied to the current block,
wherein the BDPCM direction flag represents a horizontal direction or a vertical direction as a prediction direction for the current block,
wherein an intra prediction mode of the prediction direction is derived as an intra prediction mode of the current block,
wherein based on the prediction direction for the current block being the vertical direction, the residual information includes syntax elements for a target sample of the current block, and
wherein the syntax elements for the target sample represent a difference between a residual coefficient value of the target sample and a top residual coefficient value of the target sample.