Patent ID: 11902578
Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 1:
2. An image encoding method performed by an image encoding apparatus, the image encoding method comprising:
dividing a coding block in a current image to obtain one or more sub-blocks, coding information on the dividing the coding block being encoded into a bitstream,
wherein the coding information includes at least one of a first flag indicating whether to divide the coding block to obtain the one or more sub-blocks, a second flag indicating whether to divide the coding block asymmetrically, or a third flag indicating whether a division direction for the coding block is a horizontal direction or a vertical direction,
wherein, in case the coding block is divided asymmetrically, a first sub-block having a ¼ size of the coding block is obtained, the first-sub-block belonging to the one or more sub-blocks; and
encoding a residual signal of the coding block by performing a transform on the first-sub-block.