Road Density Analysis Based on Skeleton Partitioning for Road Generalization  

道路综合中基于骨架分割的道路密度分析(英文)

作　　者：艾廷华 刘耀林 

出　　处：《Geo-Spatial Information Science》2009年第2期110-116,共7页地球空间信息科学学报（英文）

基　　金：Supported by the National 863 Program of China(No2007AA12Z225);the Natural Science Foundation of China(No40771168)

摘　　要：This paper proposes an algorithm for road density analysis based on skeleton partitioning. Road density provides metric and statistical information about overall road distribution at the macro level. Existing measurements of road density based on grid method, fractal geometry and mesh density are reviewed, and a new method for computing road density based on skeleton partitioning is proposed. Experiments illustrate that road density based on skeleton partitioning may reveal the overall road distribution. The proposed measurement is further tested against road maps at 1:10k scale and their generalized version at 1:50k scale. By comparing the deletion percentage within different density interval, a road density threshold can be found, which indicate the need for further operations during generalization. Proposed road density may be used to examine the quality of road generalization, to explore the variation of road network through temporal and spatial changes, and it also has future usage in urban planning, transportation and estates evaluation practice.This paper proposes an algorithm for road density analysis based on skeleton partitioning. Road density provides metric and statistical information about overall road distribution at the macro level. Existing measurements of road density based on grid method, fractal geometry and mesh density are reviewed, and a new method for computing road density based on skeleton partitioning is proposed. Experiments illustrate that road density based on skeleton partitioning may reveal the overall road distribution. The proposed measurement is further tested against road maps at 1：10k scale and their generalized version at 1：50k scale. By comparing the deletion percentage within different density interval, a road density threshold can be found, which indicate the need for further operations during generalization. Proposed road density may be used to examine the quality of road generalization, to explore the variation of road network through temporal and spatial changes, and it also has future usage in urban planning, transportation and estates evaluation practice.

关 键 词：multiple-representation map generalization road density skeleton partitioning 

分 类 号：U411[交通运输工程—道路与铁道工程]