Patent ID: 11910018
Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 5:
6. A non-transitory computer-readable recording medium storing a bitstream that is generated by a method of encoding an image with an encoding apparatus, the method comprising:
determining a block division type of a current block in the image from a candidate group pre-defined in the encoding apparatus;
encoding single index for specifying the determined block division type of the current block; and
encoding each of sub-blocks resulting from dividing the current block based on the determined block division type,
wherein the single index is used to select one candidate division types among a plurality of candidate division types included in the candidate group,
wherein the plurality of candidate division types include a non-division, a first quad-division, a second quad-division, a binary-division and a triple-division,
wherein the first quad-division is representative of dividing, based one horizontal line and one vertical line, one coding block into four coding blocks, the second quad-division is representative of dividing, based on three horizontal lines or three vertical lines, one coding block into four coding blocks, the binary-division is representative of dividing one coding block into two coding blocks, and the triple-division is representative of dividing one coding block into three coding blocks,
wherein the binary-division includes a horizontal binary-division and a vertical binary-division,
wherein the two coding blocks obtained by the first quad-division have the same size each other, and
wherein the encoding each of the sub-blocks comprises at least one of prediction or a residual encoding;
encoding a first flag specifying whether to perform the horizontal binary-division and a second flag specifying whether to perform the vertical binary-division, the first flag being different from the second flag.