Invention Grant
- Patent Title: Hierarchical point cloud compression with smoothing
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Application No.: US16380930Application Date: 2019-04-10
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Publication No.: US10909727B2Publication Date: 2021-02-02
- Inventor: Khaled Mammou , Alexandros Tourapis , Jungsun Kim , Fabrice A. Robinet , Valery G. Valentin , 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 ; G06T17/00

Abstract:
A system comprises an encoder configured to compress attribute information for a point cloud and/or a decoder configured to decompress compressed attribute for the point cloud. To compress the attribute information, multiple levels of detail are generated based on spatial information. Also, attribute values are predicted based on the level of details. A decoder follows a similar prediction process based on level of details. Also, attribute correction values may be determined to correct predicted attribute values and may be used by a decoder to decompress a point cloud compressed using level of detail attribute compression. In some embodiments, an update operation is performed to smooth attribute correction values taking into account an influence factor of respective points in a given level of detail on attributes in other levels of detail.
Public/Granted literature
- US20190311501A1 HIERARCHICAL POINT CLOUD COMPRESSION WITH SMOOTHING Public/Granted day:2019-10-10
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