Invention Grant
- Patent Title: Point cloud compression using a space filling curve for level of detail generation
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Application No.: US17935009Application Date: 2022-09-23
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Publication No.: US11754685B2Publication Date: 2023-09-12
- Inventor: Khaled Mammou , Alexandros Tourapis , Jungsun Kim
- 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 Alexander A. Knapp
- Main IPC: G01S7/4861
- IPC: G01S7/4861 ; G01S17/42 ; H03M7/30 ; G01S17/89

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. An order for the points is determined based on a space filling curve, wherein an encoder and a decoder determine a same order for the points based on the space filling curve. Levels of detail are determined by sampling the ordered points according to different sampling parameters, and attribute values are predicted for the points in the levels of detail using the determined order. The encoder determines attribute correction values based on a comparison of the predicted values to an original value prior to compression. The decoder corrects the predicted attribute values based on received attribute correction values.
Public/Granted literature
- US20230072818A1 POINT CLOUD COMPRESSION USING A SPACE FILLING CURVE FOR LEVEL OF DETAIL GENERATION Public/Granted day:2023-03-09
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