US 2022/0286677 A1 · POINT CLOUD PROCESSING METHOD, ENCODER, DECODER AND STORAGE MEDIUM

Abstract

Provided are a point cloud processing method, an encoder and a decoder. The method comprises: performing geometric coordinate conversion and quantization on original coding points in a point cloud to be coded to obtain coding points; acquiring three-dimensional Morton codes of the coding points and a preset number of slice partitions; shifting the three-dimensional Morton codes rightwards by N bits to obtain M types of Morton codes of parent blocks corresponding to the coding points respectively; determining M first ranges of coding point indexes corresponding to the M types of Morton codes respectively; partitioning a space where coding points within each of the first ranges of coding point indexes are located into an initial slice, and shifting each initial slice leftwards according to a respective corresponding first three-dimensional translation coordinate to obtain M slices; and writing the first range of coding point indexes and the first three-dimensional translation coordinates corresponding to each of the M slices into a bitstream.

Claims10

Dependent claims

A method for point cloud processing, applied to an encoder and comprising:

performing geometric coordinate transformation and quantization on original coding points in a point cloud to be coded to obtain coding points;
acquiring three-dimensional Morton codes of the coding points and a preset number of slice partitions;
shifting the three-dimensional Morton codes rightwards by N bits to obtain M types of Morton codes of parent blocks corresponding to the coding points respectively, the M types of Morton codes corresponding to M types of first parent blocks, M being less than or equal to the preset number of slice partitions, and N being a positive integer more than or equal to 1;
determining M first ranges of coding point indexes corresponding to the M types of Morton codes respectively;
partitioning a space where coding points within each of the first ranges of coding point indexes are located into an initial slice, and shifting each initial slice leftwards according to a respective corresponding first three-dimensional translation coordinate to obtain M slices;
and
writing the first range of coding point indexes and the first three-dimensional translation coordinate corresponding to each of the M slices into a bitstream.

4 more elements

Dependencies are inferred from the claim text.

Point cloud processing method, encoder, decoder and storage medium

Life of this patent

Point cloud processing method, encoder, decoder and storage medium

Life of this patent

Abstract

Claims10