道路网匹配质量检核与修正机制研究

Quality checking and correction mechanism of road network matching results

针对多源道路网匹配结果质量检核的问题,通过比较匹配道路节点及路段在形状、位置和拓扑等方面的特征相似度,提出了匹配结果的度量约束、拓扑关系约束以及一致性约束等概念,并据此构建了全局一致性测度函数.利用这些限制性约束条件对匹配结果进行质量评估,评估结果分为两类:质量可靠和质量不可靠.对于质量不可靠,需进一步交由人工判定,并以令全局一致性测度函数得到最快增长为目标,对匹配结果进行级联自动修正,直至全局一致性测度函数无法再增大为止.这种半自动的质量检核与修正机制能够对匹配结果进行快速的质量评定,消除误匹配和漏匹配,确保经修正的匹配结果相互兼容,满足全局一致性约束条件,从而改善数据质量.

To verify the automated matching results of road network from different sources,this study compared the similarities of following aspects： locations,shape and topological structure similarity of road junctions and road arcs,and proposed the concept of metric constraint,topological relationship constraint and global consistency constraint.According to this concept,measuring function was established.The use of constraints was to evaluate the quality of matching results.The quality of matching results was divided into two types： quality reliable and quality unreliable.Those unreliable matching results were left to artificial judgment,by this they could be jointly fixed with small amount of manual intervention until global consistency measurement reach a maximum at the fastest direction.The semi-automatic quality assessment and correction mechanism proposed in this paper can evaluate matching accuracy,and ensure that the matching results finally satisfy the global consistency constraint.Thereby,wrong matching results were deleted and matching quality was improved in this study.