THREE-DIMENSIONAL DATA ENCODING METHOD, THREE-DIMENSIONAL DATA DECODING METHOD, THREE-DIMENSIONAL DATA ENCODING DEVICE, AND THREE-DIMENSIONAL DATA DECODING DEVICE

A three-dimensional data encoding method includes: combining first point cloud data and second point cloud data to generate third point cloud data (S5481); and encoding the third point cloud data to generate encoded data (S5482). The encoded data includes identification information indicating whether each of three-dimensional points included in the third point cloud data belongs to the first point cloud data or the second point cloud data. For example, the first point cloud data and the second point cloud data may be point cloud data of the same object and having different times.