Title:
オクツリーベースの点群コーディングにおける平面モードのためのコンテキスト決定
Document Type and Number:
Japanese Patent JP7449965
Kind Code:
B2
Abstract:
Method and devices for coding point cloud data using a planar coding mode. The planar coding mode may be signaled using in a planar mode flag to signal that a volume is planar. A planar volume has all of its occupied child nodes on one side of a plane bisecting the volume. A planar position flag may signal which side of the volume is occupied. Entropy coding may be used to code the planar mode flag and/or the planar position flag. Context determination for coding may take into account one or more of whether a parent volume containing the volume is planar in occupancy, occupancy of a neighbouring volume at a parent depth, distance between the volume and a closest already-coded occupied volume at a same depth as the volume, plane position, if any, of the closest already-coded occupied volume, and a position of the volume within the parent volume.
Inventors:
Lasser, Sebastian
Flynn, David
Flynn, David
Application Number:
JP2021576316A
Publication Date:
March 14, 2024
Filing Date:
June 04, 2020
Export Citation:
Assignee:
BlackBerry Limited
International Classes:
H04N19/597; G06T9/40; H04N19/70; H04N19/91; H04N19/96
Domestic Patent References:
| JP2022521680A | ||||
| JP2022538223A |
Other References:
"G-PCC codec description v5",N18891,ISO/IEC JTC 1/SC 29/WG 11,2019年12月18日,Pages 1-4,23-26,72 (section 3.2.4),[令和6年2月24日検索], インターネット, .,(See document file "w18891.docx" in the zip file "w18891.zip".)
Attorney, Agent or Firm:
Takeshi Oshio