顾及要素空间分布特征的稠疏矢量瓦片构建方法研究
发布时间:2019-06-15 19:15
【摘要】:现行常用的金字塔模型构建矢量瓦片方法普遍未考虑空间对象的分布特征,导致同一层级矢量瓦片之间的数据量不均衡,引起瓦片数据加载渲染效率差异和并发一致性问题.为此提出一种顾及要素空间分布特征的稠疏矢量瓦片构建方法.该方法在保证矢量瓦片金字塔模型多分辨率特性的同时,对每一层级中要素数据量大的瓦片进行层次分解,形成了稠疏空间格网,从而实现同一层级矢量瓦片间的数据量相对均衡.实验表明,该方法实现了矢量瓦片访问时的负载均衡,提升了矢量瓦片的加载渲染效率,获得了更好的用户体验.
[Abstract]:The current methods of constructing vector tiles by pyramid model generally do not consider the distribution characteristics of spatial objects, which leads to the imbalance of the amount of data between vector tiles at the same level, which leads to the difference of rendering efficiency and concurrency consistency of tile data loading. In this paper, a dense sparse vector tile construction method considering the spatial distribution characteristics of elements is proposed. This method not only ensures the multi-resolution characteristics of the vector tile pyramid model, but also decomposes the tiles with large amount of element data in each level, and forms a dense sparse spatial grid, so as to achieve the relative balance of the amount of data between the same level of vector tiles. The experimental results show that this method realizes the load balancing of vector tile access, improves the loading rendering efficiency of vector tile, and obtains a better user experience.
【作者单位】: 浙江大学浙江省资源与环境信息系统重点实验室;浙江大学地理信息科学研究所;浙江省第二测绘院;
【基金】:国家自然科学基金资助项目(41671391,41471313,41101356,41101371,41171321) 国家科技基础性工作专项(2012FY112300) 浙江省科技攻关项目(2014C33072,2013C33051) 国家海洋公益性行业科研专项经费资助项目(201505003-6)
【分类号】:P208
本文编号:2500446
[Abstract]:The current methods of constructing vector tiles by pyramid model generally do not consider the distribution characteristics of spatial objects, which leads to the imbalance of the amount of data between vector tiles at the same level, which leads to the difference of rendering efficiency and concurrency consistency of tile data loading. In this paper, a dense sparse vector tile construction method considering the spatial distribution characteristics of elements is proposed. This method not only ensures the multi-resolution characteristics of the vector tile pyramid model, but also decomposes the tiles with large amount of element data in each level, and forms a dense sparse spatial grid, so as to achieve the relative balance of the amount of data between the same level of vector tiles. The experimental results show that this method realizes the load balancing of vector tile access, improves the loading rendering efficiency of vector tile, and obtains a better user experience.
【作者单位】: 浙江大学浙江省资源与环境信息系统重点实验室;浙江大学地理信息科学研究所;浙江省第二测绘院;
【基金】:国家自然科学基金资助项目(41671391,41471313,41101356,41101371,41171321) 国家科技基础性工作专项(2012FY112300) 浙江省科技攻关项目(2014C33072,2013C33051) 国家海洋公益性行业科研专项经费资助项目(201505003-6)
【分类号】:P208
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