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1. (WO2018061550) IMAGE DECODING DEVICE AND IMAGE CODING DEVICE

Pub. No.:    WO/2018/061550    International Application No.:    PCT/JP2017/030409
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Fri Aug 25 01:59:59 CEST 2017
IPC: H04N 19/127
H04N 19/119
H04N 19/157
H04N 19/176
H04N 19/70
Applicants: SHARP KABUSHIKI KAISHA
シャープ株式会社
Inventors: IKAI, Tomohiro
猪飼 知宏
AONO, Tomoko
青野 友子
Title: IMAGE DECODING DEVICE AND IMAGE CODING DEVICE
Abstract:
An image decoding device (31) that comprises: a CT information decoding unit (10) that decodes a restriction flag that indicates whether to restrict the decoding of a prediction unit in different coding trees; and a CU decoding unit (20) that, when the restriction flag indicates to restrict the decoding of the prediction unit, decodes the prediction unit at a coding node that decodes first in the coding tree and does not decode the prediction unit at other coding nodes. The present invention makes it possible to reduce PU coding volume and the complexity of image coding/decoding while maintaining highly flexible partitioning by means of CT partitioning (QT partitioning and BT partitioning).