Title:
THREE-DIMENSIONAL DATA ENCODING METHOD, THREE-DIMENSIONAL DATA DECODING METHOD, THREE-DIMENSIONAL DATA ENCODING DEVICE, AND THREE-DIMENSIONAL DATA DECODING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/146691
Kind Code:
A1
Abstract:
A three-dimensional encoding method for entropy-encoding a bit string that represents an N-branched tree structure (N=integer greater than or equal to 2) of a plurality of three-dimensional points included in three-dimensional data using an encoding table selected from a plurality of encoding tables, the bit string including N-bit information for each node in the N-branched tree structure, the N-bit information including N pieces of 1-bit information that indicates whether or not a three-dimensional point exists in each of N child nodes of the corresponding node, each of the plurality of encoding tables being provided with a context for each bit of the N-bit information. In the entropy-encoding, each bit of the N-bit information is entropy-encoded using the context provided for the bit in the selected encoding table.
Inventors:
SUGIO TOSHIYASU (JP)
KOYAMA TATSUYA
WANG CHI
LASANG PONGSAK
KOYAMA TATSUYA
WANG CHI
LASANG PONGSAK
Application Number:
PCT/JP2019/002252
Publication Date:
August 01, 2019
Filing Date:
January 24, 2019
Export Citation:
Assignee:
PANASONIC IP CORP AMERICA (US)
International Classes:
G06T9/40; G06T17/00
Domestic Patent References:
| WO2014020663A1 | 2014-02-06 |
Foreign References:
| JP2017126890A | 2017-07-20 | |||
| JP2014529950A | 2014-11-13 | |||
| JP2014527735A | 2014-10-16 | |||
| JP2005259139A | 2005-09-22 | |||
| JPH06225279A | 1994-08-12 |
Other References:
See also references of EP 3745355A4
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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