道路网移位的Snakes模型参数设置方法研究
发布时间:2018-03-01 18:17
本文关键词: Snakes模型 地图综合 移位 道路网 形状参数 出处:《地理与地理信息科学》2017年03期 论文类型:期刊论文
【摘要】:基于Snakes模型的移位算法是一种适合线状地图要素移位的全局最优化算法,该算法的移位效果在一定程度上依赖于Snakes模型形状参数(弹性参数α和刚性参数β)的设置,但目前仍缺少定量化的参数设置方法。为改善该算法的移位效果,该文提出了一种顾及道路要素等级属性和局部弯曲特征的Snakes模型形状参数优化设置方法。该方法分别建立了Snakes模型的形状参数与道路等级属性、道路内部各段弯曲曲率之间的定量关系,从而可在移位过程中更好地顾及道路要素的语义特征和图形特征。实验中,采用ArcGIS Engine二次开发实现了相应的道路网移位程序,并对某山区部分道路网进行移位处理,与原有算法相比,移位效果有所改善。
[Abstract]:The shift algorithm based on Snakes model is a global optimization algorithm suitable for the shift of linear map elements. To some extent, the shift effect of this algorithm depends on the setting of shape parameters (elastic parameter 伪 and rigid parameter 尾) of Snakes model. But there is still a lack of quantitative parameter setting method. In order to improve the shift effect of the algorithm, In this paper, a method for optimizing the shape parameters of Snakes model, which takes into account the attribute of road factor grade and local bending, is proposed. The shape parameter and road grade attribute of Snakes model are established by this method, respectively. The quantitative relationship between bending curvature of each segment of the road can better take into account the semantic and graphic features of road elements in the course of displacement. In the experiment, the corresponding shift program of road network is realized by using ArcGIS Engine. And some mountain road network displacement processing, compared with the original algorithm, the displacement effect is improved.
【作者单位】: 长江大学地球科学学院;武汉大学资源与环境科学学院;地理信息工程国家重点实验室;
【基金】:国家自然科学基金面上项目(41471384) 地理信息工程国家重点实验室开放基金课题(SKLGIE2016-Z-4-1) 湖北省教育厅科学研究计划指导性项目(B2015448) 长江大学大学生创新创业训练计划项目(2016010)
【分类号】:P208
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本文编号:1553024
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