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讨论了辐射模式的概念,提出了一种道路网辐射模式识别的新方法。首先根据道路网构成的多边形在尺寸上的空间自相关性,运用热点分析提取模糊辐射中心;然后基于好的延续性规则提取候选辐射边;随后进行了辐射中心降维和候选辐射边直线化;顾及辐射边的数量适中、角度近似相等和长度近似相等的特点,建立判别模型,确定辐射边。实验表明,该方法能有效提取辐射模式。
The concept of radiation pattern is discussed, and a new method for pattern recognition of road network radiation is proposed. Firstly, based on the spatial autocorrelation of the polygons formed by road network, the hotspot analysis is used to extract the fuzzy radiation centers. Then, the candidate radiating edges are extracted based on the good continuity rule. Then the radiation center dimensionality reduction and the candidate radiate edges are linearized. The number of radiation edges is moderate, the angles are approximately the same, and the length is approximately equal. The discriminant model is established to determine the radiation edge. Experiments show that this method can effectively extract the radiation pattern.