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针对道路网线要素特点,提出了基于投影的道路网信息几何匹配方法。根据线段斜率,对线段进行投影、分割,提取线要素特征点,将复杂的道路网匹配转化为特征点匹配,可解决复杂的多对多匹配。通过渐进式的匹配策略,逐步、快速缩小匹配范围,提高了匹配效率。通过实验合理地调整匹配阈值,减少漏匹配与误匹配,提高整体匹配准确率。结果表明,本算法效率高,可靠性好,符合应用需求。
According to the characteristics of the road network elements, a method of road network information geometric matching based on projection is proposed. According to the slope of the line segment, the line segments are projected, divided, and the feature points of the line features are extracted. The complex road network matching is transformed into feature point matching, which can solve complex multi-to-many matching. Through gradual matching strategy, the match range can be narrowed down gradually and the matching efficiency can be improved. By adjusting the matching threshold rationally and experimentally, it can reduce the mismatch between the missing match and the wrong match, and improve the overall matching accuracy. The results show that the proposed algorithm is efficient, reliable and meets the application requirements.