计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2013年
16期
165-167
,共3页
鞍部点%特征%数字高程模型(DEM)%等高线地图%拓扑关系
鞍部點%特徵%數字高程模型(DEM)%等高線地圖%拓撲關繫
안부점%특정%수자고정모형(DEM)%등고선지도%탁복관계
saddle point%characteristics%Digital Elevation Model(DEM)%contour map%topological relationship
从鞍部点的形态特征出发,利用移动窗口法预提取出符合地形结构的鞍部特征点,对DEM(Digital Elevation Model,数字高程模型)数据进行等高距分层以模拟出等高线地图的地貌特性,从而考查特征点与周围区域的拓扑关系,剔除未处于鞍部地区的伪特征点。实验结果表明,算法快速简便,所获取的鞍部点符合地貌认知。
從鞍部點的形態特徵齣髮,利用移動窗口法預提取齣符閤地形結構的鞍部特徵點,對DEM(Digital Elevation Model,數字高程模型)數據進行等高距分層以模擬齣等高線地圖的地貌特性,從而攷查特徵點與週圍區域的拓撲關繫,剔除未處于鞍部地區的偽特徵點。實驗結果錶明,算法快速簡便,所穫取的鞍部點符閤地貌認知。
종안부점적형태특정출발,이용이동창구법예제취출부합지형결구적안부특정점,대DEM(Digital Elevation Model,수자고정모형)수거진행등고거분층이모의출등고선지도적지모특성,종이고사특정점여주위구역적탁복관계,척제미처우안부지구적위특정점。실험결과표명,산법쾌속간편,소획취적안부점부합지모인지。
Based on the analysis of the saddle’s characteristics, extract the feature points by using the mobile window method, then layer the grid DEM data in order to simulate the geomorphic characteristics of contour map. Thus distinguish them by ex-amining the topological relationship with its’surrounding area. The experimental results show that the algorithm is fast, simple and fit the landform cognition.