Integrated Representation and Description of Natural-language Spatial Relations Between a Line and an Area

It is difficult to express and distinguish complex location relationship information of two spatial objects through single topological relations,directional relations and distance relations.Using natural language as the description tool,the positional description of a line and an area is studied.We propose an integrated representation method of natural-language spatial relations between a line and an area according to the decomposition-combination measure.Firstly,n characteristic points and n-1 characteristic lines would be obtained from refining and decomposing the linear object,whose spatial relations with the areal objects could be built by contraposing each of the characteristic points and lines according to the descriptive habits of natural-language.Secondly,we integrate the description of the topological relations,directional relations and distance relations according to the rules of the describing of natural-language spatial relations between lines and regions in the sequence of the directions of the lineal object.Finally,comprehensive experiments are performed to demonstrate the feasibility and efficiency of the transformation between graphic spatial relations and natural-language spatial relations.