POSITION CODING BASED ON SPATIAL TREE WITH DUPLICATE POINTS

摘要

A method and an apparatus for constructing a spatial tree data structure corresponding to a region. According to the present principles, a cell may include therein a point or a set of points that are determined to be duplicate points. In an embodiment the duplicate points are determined based on the size of the points included within the cell The inclusion of duplicate points within a particular cell, rather than further subdividing the cell, provides coding efficiency. The present principles are particularly advantageous in the context of quadtree or octree type partitioning, and may be used in 3D mesh coding.

主权项

1. A method of constructing a spatial tree data structure corresponding to a region, comprising:
selecting an area within the region; determining whether the area includes duplicate points, wherein the duplicate points comprise two or more points in the area; if the area includes duplicate points, recording the area information indicating the presence of the duplicate points for the area, and stopping further sub-dividing of the area.