The discussion of semi-structured sample modeling on expanding 2.5D method

It is important to build entity modeling which it exists in the outdoor environment with human activities in the nature increasingly. Outdoor entity can be divided into structured, semi-structured and unstructured. This paper uses expanding 2.5D method to model semi-structured entity which it is very representative. The semi-structured entity can be divided into simple standard sample, complex standard sample, simple deformed sample and complex deformed sample in accordance with half-dimensional information gradual deepening complexity. Analyze data structure, build sample modeling. After that, build entity modeling with some operation.