Abstract: An encoding control method includes obtaining a current to-be-processed node in a target queue, where the target queue includes nodes whose corresponding space blocks are occupied in a constructed tree structure; obtaining a first mode identifier of the current to-be-processed node; and in a case that the first mode identifier is a first identifier, if nodes that have been processed continuously meet a first condition, performing multiway tree occupancy encoding on the current to-be-processed node; where the first condition includes that: a mode identifier of the node that has been processed continuously is the first identifier and a number of nodes that have been processed continuously is less than a first threshold.

Abstract: This application discloses an entropy encoding method and apparatus, and an entropy decoding method and apparatus. The entropy encoding method in the embodiments of this application includes: obtaining, by an entropy encoding apparatus, sparsity/density information of a to-be-encoded target point cloud; determining, based on the sparsity/density information, a type of an occupancy code context model used to perform entropy encoding on the target point cloud; and performing entropy encoding on the target point cloud based on the type of the occupancy code context model.

Abstract: This application discloses a point cloud encoding processing method and apparatus and a point cloud decoding processing method and apparatus. The point cloud encoding processing method of embodiments of this application includes: determining sparsity level information of a target point cloud; and in a case that the sparsity level information indicates the target point cloud being a sparse point cloud and a node to be encoded corresponding to the target point cloud satisfies an isolated point encoding condition, enabling an isolated point encoding mode.