Decoding methods, encoding methods, decoders, and encoders
By optimizing the neighbor point weight calculation method in point cloud compression, the prediction accuracy of point cloud attribute information is improved, solving the problem of inaccurate prediction in existing technologies and promoting efficient storage and transmission of point cloud data.
CN117751574BActive Publication Date: 2026-05-26GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
- Filing Date
- 2021-08-23
- Publication Date
- 2026-05-26
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Figure CN117751574B_ABST
Abstract
This application provides a decoding method, an encoding method, a decoder, and an encoder. The decoding method includes: parsing the bitstream of a current point cloud to obtain its geometric information; for a current point to be decoded in the current point cloud, determining the decoding order of its attribute information based on the geometric information, and obtaining n first neighbor points preceding the current point and m second neighbor points preceding the n first neighbor points in the decoding order; determining the weights of the attribute information of the n first neighbor points based on the attribute reconstruction values of the m second neighbor points; and predicting the attribute value of the current point based on the attribute information of the n first neighbor points and their weights. This decoding method can improve the accuracy of the decoder's prediction of the current point.
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