POINT CLOUD ENCODING/DECODING METHOD, ENCODER, DECODER, AND STORAGE MEDIUM

Embodiments of the present application provide point cloud encoding/decoding method, an encoder, a decoder, and a storage medium. The method comprises: determining a bounding box of a point cloud to be encoded/decoded; when performing octree division on the bounding box of said point cloud on the basis of a Morton code order, obtaining coordinate information of the current node; determining a first neighbor mode on the basis of the coordinate information; determining an entropy encoding parameter/entropy decoding parameter of the current node on the basis of the first neighbor mode; and performing entropy encoding/entropy decoding on occupation information of the current node on the basis of the entropy encoding parameter/entropy decoding parameter. In this way, a first neighbor mode, i.e., location distribution of neighbor nodes when the current node is occupied, is used to predict an entropy encoding parameter/entropy decoding parameter of a sub-node in the current node, and entropy encoding/entropy decoding is performed on occupation information of the sub-node using the predicted entropy encoding parameter/entropy decoding parameter, such that geometric spatial correlation between adjacent nodes are well utilized to perform encoding/decoding, thereby improving geometric encoding/decoding performance.