Invention Grant
- Patent Title: Techniques and apparatus for alphabet-partition coding of transform coefficients for point cloud compression
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Application No.: US17110691Application Date: 2020-12-03
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Publication No.: US11373276B2Publication Date: 2022-06-28
- Inventor: Sehoon Yea , Stephan Wenger , Shan Liu
- Applicant: TENCENT AMERICA LLC
- Applicant Address: US CA Palo Alto
- Assignee: TENCENT AMERICA LLC
- Current Assignee: TENCENT AMERICA LLC
- Current Assignee Address: US CA Palo Alto
- Agency: Sughrue Mion, PLLC
- Main IPC: G06T3/40
- IPC: G06T3/40 ; G06T9/40 ; G06K9/62 ; G06T17/00

Abstract:
A method, apparatus, and computer-readable medium for point cloud coefficient coding are provided. Transform coefficients associated with point cloud data are decomposed into set-index values and symbol-index values, the symbol index-value specifying location of the transform coefficient within a set. The decomposed transform coefficients are partitioned into one or more sets based on the set-index values and the symbol-index values. The set-index values of the partitioned transform coefficients are entropy-coded, and the symbol-index values of the partitioned transform coefficients are bypass-coded. The point cloud data is compressed based on the entropy-coded symbol-index values and the bypass-coded set-index values.
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