基于移动GIS的景观缓冲区构建方法与系统实现

Landscape buffer construction method and system implementation based on mobile GIS

为提高景区导游精准化、智能化水平,本研究首先使用矢量要素缓冲区生成方法生成初步景观缓冲区,进而利用Voronoi图方法解决缓冲区的叠加冲突问题,最后利用可视性分析方法去除无效缓冲区,通过一系列GIS方法构建景区精确导览缓冲区,为基于移动终端的LBS智能导览应用提供算法支持。在此基础上,以移动GIS为平台,综合利用Arc GIS Server、空间数据库技术搭建智能导览信息系统。针对景区智能导览信息系统的测试结果表明,导览过程中可以根据游客GPS定位信息实时提供自动导览服务,缓冲区半径大小为<10 m、10-20 m、>20 m以上时的服务平均误差分别为29.6%、18.3%和9.8%,导游过程中景音对应,缓冲区划分大小合理。该景区导览缓冲区构建方法可为同类系统开发与应用提供参考。

In order to improve precise and intelligent level of the scenic tour, the scenic guide service area was constructed precisely. The method for establishing vector elements buffer was used to generate the initial buffer. Voronoi diagram was used to solve the conflict of superposition of buffer. Invalid buffer was removed by viewshed analyzing. the intelligent scenic tour application was supported by algorithms for the LBS on the mobile terminal. Intelligent navigation information system was built up by mobile GIS platform, Arc GIS Server and Spatial Information Database Technology. Aiming at the scenic intelligent navigation information system test showed that real-time automatic navigation service was provided according to tourists GPS positioning during the course of tour. When the buffer size is less than the radius of 10 meters, 10-20 meters, more than 20 meters, service average error is 29.6%, 18.3% and 9.8%, respectively. The view correspondences with broadcast, the size of buffer is reasonable.The construction method of the scenic navigation service area for scenic intelligent navigation is of great significance.