基于街景影像的交通护栏空间分布特征研究  

Research on Spatial Distribution Characteristics of Road Guardrails Based on Street View Image

作　　者：杜坤[1] 宁津生[1] 田莉[2] 闫利[1] 常坤 DU Kun

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]清华大学建筑学院,北京100084

出　　处：《地理空间信息》2018年第11期60-63,71,125,共6页Geospatial Information

摘　　要：首先提出了基于街景影像大范围提取护栏分布道路的方法,并利用该方法对北京和上海中心区域护栏空间分布特征进行了研究。结果表明,北京五环和上海外环内设置护栏的主干路、次干路和支路总长度分别约为799.45 km和889.35 km,密度分别为0.001 19 m/m^2和0.001 34 m/m^2。随着研究区域圈层由内向外扩展,两地设置护栏不同等级道路的长度和密度变化基本一致,但北京在各等级道路设置了多重护栏,其长度超过370 km。此外,北京护栏分布存在的聚集趋势较上海更为显著。基于街景影像对交通护栏进行提取,可有效描述城市交通护栏分布情况,在城市规划和交通管理方面有重要意义。Based on the street view images,we proposed a method of extracting the distribution of road guardrails in a wide range,and used this method to study the spatial distribution characteristics of guardrails in the central area of Beijing and Shanghai.The results show that the overall length of the arterial road,sub arterial road and the branch road in the central area of Beijing and Shanghai are about 799.45 km and 889.35 km respectively,and the density are 0.001 19 m/m2 and 0.001 34 m/m2 respectively.However,the overall length of the multiple guardrails set up in various roads of Beijing is more than 370 km.In addition,the gathering tendency in the guardrails distribution in Beijing is more significant than that in Shanghai.The extraction of road guardrails based on street view image can effectively describe the distribution of urban road guardrails,and is of great significance in urban planning and traffic management.

关 键 词：交通护栏 街景影像 空间分布 北京五环 上海外环 

分 类 号：P237[天文地球—摄影测量与遥感]