METHODS AND EQUIPMENT FOR ENCODING AND DECODING POINT CLOUD DATA

Abstract

The invention relates to a method and apparatus for encoding and decoding point cloud data. The point cloud data encoding method includes the following steps: storing, in buffer, the largest coordinate in the coordinate pair of the applied node, where the applied node is the most recently encoded node with the same position as the current node along the applied axis and the coordinate pair is for axes other than the applied axis; determining the context for the planar position of the current node, where determining the context for the planar position includes determining, based on the largest coordinate in the coordinate pair of the applied node, the distance value representing the distance between the current node and the applied node; determining the increment value for whether the distance value is greater than a threshold value; and determining the context index based on the increment value; and encoding the entropy of the planar position using the determined context.