中文摘要：

现有缓冲区算法一般都是针对固定缓冲距的缓冲区计算方法,常常会由于某种因素的影响而使某地理要素对周围的影响范围和联系范围不固定,现有的缓冲区空间分析能力显得不足和不完备,不能满足应用需求。针对这个问题,通过对点、线、面目标的缓冲区建立新的数学模型,将缓冲距表示为随某变量变化的函数形式,有效地解决了缓冲距可变情况下拐点凸凹两侧的缓冲区复杂边界确定问题,给出了一种更加符合实际应用要求的带约束条件的缓冲区生成算法。通过基于QuantyView软件平台的不规则缓冲区生成与应用实例,验证了本算法的正确性和有效性。

英文摘要：

Buffer analysis is one of the major spatial analysis method in GIS,and the automatic construction of buffer is the pivotal process of buffer analysis.The existing buffer algorithms generally create a fixed buffer distance.However,with the increasing demand of spatial analysis accuracy,the existing buffer spatial analysis insufficient and incomplete for practical need because some certain factors often make the influenced and contacted arrange on the surrounding uncertainty.In order to enhance the accuracy of spatial analysis,this paper rebuilt a new mathematical model for generating buffer zones of point,line,and surface.This model expresses the buffer distance by using a function of random variables,which effectively solves the issue of complex buffer boundary of both sides of turning point.The accuracy and effectiveness of this analysis is tested and confirmed by the generation of irregular buffer and constraint based on QuantyView software.