摘要
建筑物轮廓规则化是城市空间信息提取和应用的基础性研究,现有方法主要集中在对单一主方向的建筑物直角化,难以应对具有多方向特征的复杂建筑物及建筑群。对此,本文提出一种基于向量重组的建筑物轮廓方向计算和规则化方法,实现对建筑物轮廓方向的定量描述,并以方向向量为约束条件加强建筑物轮廓的规则特征。通过设计建筑物轮廓向量重组法则,经过分组变换、方向计算和直角改正,获得描述建筑物轮廓的方向向量。再以方向向量作为控制条件,求解旋转基点和调整节点坐标,最终实现建筑物轮廓规则化。试验与主方向法对比,结果表明本文方法在节点整体移动距离和算法稳定性方面更具有优势,通过规则化方法可进一步减小原始数据的误差。本文方法不仅有效解决了复杂建筑物轮廓方向计算和规则化的问题,而且能够适用于建筑群的方向计算和规则化。
Building footprints regularization is an elementary and preliminary work of urban spatial information extraction and application.Currently,most of the existing methods are applicable for buildings with a single orientation,whereas not suitable for complex building with multi-orientations,let alone architectural complexes.In this paper,we propose a vector reconstruction based method to calculate the orientation of the building,which is then taken as a constraint to regularize the building footprint.Firstly,we design a vector reconstruction principle.We group and transform the footprints vectors,calculate the orientation,and correct the right angle to obtain the orientation vectors of the building footprints.Then,we use the orientation vector as a constraint to determine the rotation base point.Finally,the regularization of the building footprint can be achieved by adjusting the node coordinates.Compared with the main orientation method,the experimental results show that the proposed method performs better in algorithm stability and node coordinate moving distance.The error of original data can be further reduced by regularization method.Through the proposed method,the footprints orientation calculation and regularization of complex building and architectural complexes can be effectively accomplished.
作者
刘昌振
马威
马红
魏世轩
LIU Changzhen;MA Wei;MA Hong;WEI Shixuan(Chongqing Institute of Surveying and Mapping Science and Technology,Chongqing 401121,China;Technology Innovation Center for Spatio-temporal Information and Equipment of Intelligent City,Ministry of Natural Resources,Chongqing 401121,China;Key Laboratory of Monitoring,Evaluation and Early Warning of Territorial Spatial Planning Implementation,Ministry of Natural Resources,Chongqing 401147,China;School of Smart City,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《测绘学报》
EI
CSCD
北大核心
2023年第9期1584-1594,共11页
Acta Geodaetica et Cartographica Sinica
基金
国家自然科学基金(42001324)
国家重点研发计划(2018YFB0505400,2021YFB2600600)
重庆市自然科学基金(cstc2021jcyj-msxmX1147)
重庆英才计划(cstc2022ycjh-bgzxm0229)。
关键词
向量重组
建筑物轮廓
方向计算
建筑物规则化
总体最小二乘
vector reconstruction
building footprints
orientation calculation
building regularization
total least squares
