| 摘要 |
A method and apparatus for compressing three-dimensional point cloud data is disclosed. In one aspect, a method for compressing three dimensional point cloud includes steps of retrieving three-dimensional point cloud data; providing one or more grids to the three-dimensional point cloud data; assigning one binary digit to each three-dimensional grid voxel containing said point cloud data and assigning the other binary digit to each three-dimensional grid voxel that does not have said point cloud data; converting the three-dimensional grid into two-dimensional tiles; and storing information of a plurality of binary strings in said two-dimensional tiles. In one embodiment, the step of storing information of a plurality of binary strings in said two-dimensional tiles includes a step of storing the number of repeating times of each binary digit in the binary strings. The method can significantly reduce memory space, as well as preserving small details of the point cloud. |
