An integrated index online visualization of geo-scene point clouds on mobiles(一种面向移动终端地理场景点云在线可视化的集成型索引)
针对现有点云索引研究方法欠考虑移动终端性能特点这一问题,提出了一种适用于移动端点云场景在线可视化的集成型空间索引。该索引首先利用考虑了移动终端网络带宽与计算渲染性能特点的改进型KD-tree 实现点云数据的均衡划分与编码,在此基础上构建点云数据的LOD 模型,并使用改进型八叉树管理其组织,最后通过改进型KD-tree 的编码联结改进型八叉树形成<1 一级树:1 二级树>的优化型索引结构。该索引可支持移动端实现基于LOD 的点云场景渲染策略,支持从数据块层面判断点云数据的空间关系,也支持数据的多线程查询。实验与分析表明:相比传统点云索引,该索引具有稳定的构建效率与优秀的空间查询性能,...
Main Authors: | QIUBo(邱波), ZHANGFeng(张丰), DUZhenhong(杜震洪), LIURenyi(刘仁义), ZHANGShuyu(张书瑜), FANXinyi(范心仪) |
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Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2019-01-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2019.01.012 |
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