3DR44 Direction Relation Representation Model in Three Dimensional Space
LI Songb · Jisuanji gongcheng · 2011
Existing direction relation representation method can not represent the internal spatial direction of the minimum bounding box.Aiming at this shortage,this paper presents a 3DR44 direction relation representation model.It gives the dynamic direction adjacent relations and the bidirectional mapping relations of the 3DR44 direction relations model.The orderly sequences of the intersection pairs are used to deal with and distinguish the complex direction relations.The direction relations model in the 2D space can be used to handle the 3DR44 direction relations in the 3D space.Application results show that the model can enhance the ability to represent the 3D direction relation of the spatial database.