Title:
METHOD FOR ENCODING AND DECODING A 3D POINT CLOUD, ENCODER, DECODER
Document Type and Number:
WIPO Patent Application WO/2024/082109
Kind Code:
A1
Abstract:
Method for decoding, from a bitstream, the geometry of a 3D point cloud, preferably implemented in a decoder, including: receiving and decoding a bitstream, wherein the bitstream contains octree information including information about octree structure of the volume of the point cloud and vertex information including information about vertex presence and position of a vertex on edges of cuboids of leaf nodes of the octree structure; determining triangles by connecting the vertices of one cuboid relating to a leaf node of the octree structure; voxelization of the triangles to de-termine points of the point cloud, characterized in that the method further comprising: wherein determining whether an additional information contained in the bitstream meets a pre-defined condition, wherein the additional information is determined based on a dense degree of the point cloud, preferably evaluated by a sampling distance dsampl of the point cloud; when the pre-defined condition is met, at least one triangle is extended along at least one side for voxelization based on a the sampling distance dsampl of the point cloud.
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Inventors:
GAO SHUO (CN)
Application Number:
PCT/CN2022/125769
Publication Date:
April 25, 2024
Filing Date:
October 17, 2022
Export Citation:
Assignee:
BEIJING XIAOMI MOBILE SOFTWARE CO LTD (CN)
International Classes:
G06T9/00; G06T9/40; G06T15/06; H04N19/597; H04N19/91
Foreign References:
| US20090167763A1 | 2009-07-02 | |||
| US10192353B1 | 2019-01-29 |
Other References:
LASSERRE (XIAOMI) S: "[GPCC][TriSoup] Part 5 Improved rendering from triangles", no. m59292, 12 April 2022 (2022-04-12), XP030301450, Retrieved from the Internet [retrieved on 20220412]
SHUO GAO (XIAOMI) ET AL: "[GPCC][EE13.50 related] Improvement of voxelization of trisoup model", no. m60017, 13 July 2022 (2022-07-13), XP030303389, Retrieved from the Internet [retrieved on 20220713]
"EE 13.50 on triangle soup", no. n21576, 26 May 2022 (2022-05-26), XP030302492, Retrieved from the Internet [retrieved on 20220526]
DRICOT ANTOINE ET AL: "Adaptive Multi-level Triangle Soup for Geometry-based Point Cloud Coding", 2019 IEEE 21ST INTERNATIONAL WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING (MMSP), IEEE, 27 September 2019 (2019-09-27), pages 1 - 6, XP033660072, DOI: 10.1109/MMSP.2019.8901791
KHALED MAMMON ET AL: "G-PCC codec description", no. N18189, 22 February 2019 (2019-02-22), pages 1 - 39, XP030212734, Retrieved from the Internet [retrieved on 20190222]
SHUO GAO (XIAOMI) ET AL: "[G-PCC][EE13.50] Test 1 Improvement of voxelization of trisoup model", no. m60797, 25 October 2022 (2022-10-25), XP030305282, Retrieved from the Internet [retrieved on 20221025]
A. DRICOT ET AL.: "Adaptive multi-level triangle soup for geometry - based point cloud coding", IEEE 21ST INTERNATIONAL WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING (MMSP, 2019
NAKAGAMI 0.: "report on triangle soup decoding", ISO/IEC JTC1/SC29-WG11 M52279, 2020
SHUO GAO (XIAOMI) ET AL: "[GPCC][EE13.50 related] Improvement of voxelization of trisoup model", no. m60017, 13 July 2022 (2022-07-13), XP030303389, Retrieved from the Internet
"EE 13.50 on triangle soup", no. n21576, 26 May 2022 (2022-05-26), XP030302492, Retrieved from the Internet
DRICOT ANTOINE ET AL: "Adaptive Multi-level Triangle Soup for Geometry-based Point Cloud Coding", 2019 IEEE 21ST INTERNATIONAL WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING (MMSP), IEEE, 27 September 2019 (2019-09-27), pages 1 - 6, XP033660072, DOI: 10.1109/MMSP.2019.8901791
KHALED MAMMON ET AL: "G-PCC codec description", no. N18189, 22 February 2019 (2019-02-22), pages 1 - 39, XP030212734, Retrieved from the Internet
SHUO GAO (XIAOMI) ET AL: "[G-PCC][EE13.50] Test 1 Improvement of voxelization of trisoup model", no. m60797, 25 October 2022 (2022-10-25), XP030305282, Retrieved from the Internet
A. DRICOT ET AL.: "Adaptive multi-level triangle soup for geometry - based point cloud coding", IEEE 21ST INTERNATIONAL WORKSHOP ON MULTIMEDIA SIGNAL PROCESSING (MMSP, 2019
NAKAGAMI 0.: "report on triangle soup decoding", ISO/IEC JTC1/SC29-WG11 M52279, 2020
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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