Title:
INTRA-FRAME PREDICTION-BASED POINT CLOUD ATTRIBUTE COMPRESSION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/153326
Kind Code:
A1
Abstract:
An intra-frame prediction-based point cloud attribute compression method. A new block structure-based intra-frame prediction scheme is provided for point cloud attribute information, where four prediction modes are provided to reduce information redundancy among different coding blocks as much as possible and improve point cloud attribute compression performance. The method comprises: performing point cloud attribute color space conversion; dividing a point cloud by using a K-dimensional (KD) tree to obtain coding blocks; performing block structure-based intra-frame prediction; performing intra-frame prediction mode division; performing conversion, uniform quantization, and entropy coding. The method relates to performing coding block division on a point cloud by using a KD tree, numbering coding blocks in a breadth-first traversal order, processing the coding blocks one by one in the numbering order by using a point cloud intra-frame prediction scheme having four prediction modes, selecting an optical prediction mode by means of mode decision, and performing conversion, quantization, and entropy coding on a predicted residual, so as to achieve optimal performance of point cloud attribute compression.
Inventors:
LI GE (CN)
SHAO YI TING (CN)
SHAO YI TING (CN)
Application Number:
PCT/CN2018/076435
Publication Date:
August 15, 2019
Filing Date:
February 12, 2018
Export Citation:
Assignee:
UNIV PEKING SHENZHEN GRADUATE SCHOOL (CN)
International Classes:
G06T9/00
Foreign References:
| CN107403456A | 2017-11-28 | |||
| CN105844691A | 2016-08-10 | |||
| CN107292935A | 2017-10-24 | |||
| CN106934853A | 2017-07-07 | |||
| US20170347122A1 | 2017-11-30 |
Attorney, Agent or Firm:
BEIJING JWT INTELLECTUAL PROPERTY CO., LTD. (CN)
Download PDF: