7Douglas D H,Peucker T K.Algorithms for the reduct on of the number of Points required to represent a digitized line or its caricature[J].The Canadian Cartographer,1973,10(2):112-122.
8严蔚敏,吴伟民.数据结构[M].北京:清华大学出版社,2001.
9Sealfeld A. Topolgically Consistent Line Simplification with the Douglas-Peucker Algorithm [ J ] . CGIS, 1999, 26(1): 7-18.
10Ballard, D H. Strip trees: a hierarchical representation for curves[J]. Communications of the ACM, 1981, 24(5) : 310-321.
