Invention Grant
- Patent Title: Point cloud compression using fixed-point numbers
-
Application No.: US16592711Application Date: 2019-10-03
-
Publication No.: US10853973B2Publication Date: 2020-12-01
- Inventor: Alexandros Tourapis , Valery G. Valentin , Fabrice A. Robinet , Khaled Mammou , Jungsun Kim , Yeping Su
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Agent Robert C. Kowert
- Main IPC: G06T9/00
- IPC: G06T9/00

Abstract:
A system comprises an encoder configured to compress attribute information for a point cloud and/or a decoder configured to decompress compressed attribute information. Attribute values for at least one starting point are included in a compressed attribute information file and attribute correction values are included in the compressed attribute information file. Attribute values are predicted based, at least in part, on attribute values of neighboring points. The predicted attribute values are compared to attribute values of a point cloud prior to compression to determine attribute correction values. In order to improve computing efficiency and/or repeatability, fixed-point number representations are used when determining predicted attribute values and attribute correction values. A decoder follows a similar prediction process as an encoder and corrects predicted values using attribute correction values included in a compressed attribute information file using fixed-point number representations.
Public/Granted literature
- US20200111236A1 POINT CLOUD COMPRESSION USING FIXED-POINT NUMBERS Public/Granted day:2020-04-09
Information query