Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
Point cloud compression using fixed-point numbers
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.
Apple Inc.
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inventional inventional
Yeping Fabrice A. Alexandros Khaled Valery G. Jungsun
Su Robinet Tourapis Mammou Valentin Kim