Patent ID: 11968396
Assignee: SHARP KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An image decoding device for decoding a picture for a coding node, the image decoding device comprising:
a coding node (CN) information decoding circuit configured to perform processing of a coding tree syntax, decode a first flag (split_cu_flag) indicating whether or not the coding node is split, and perform processing of the coding tree syntax; and
a coding unit (CU) decoding circuit configured to perform processing of a coding unit syntax, decode a second flag (partial_split_mode_flag) based on a size of a target coding node, perform processing of a transform unit syntax with a half value of the size of the target coding node in a case that the second flag is true, store top left coordinates of the target coding node, decode a quantized prediction residual related to a luminance transform unit by using top left coordinates of the luminance transform unit, and decode a quantized prediction residual related to a chrominance transform unit located in one of multiple split coding units by using the top left coordinates of the target coding node in a case that the second flag is true.