一种改进的基于转角函数法的面状居民地Morphing变换方法  

An Improved Morphing Method of Planar Building Based on Steering Angle Function

作　　者：万瑞康 翟仁健[1] 李安平 王柳松 齐林君 WAN Ruikang;ZHAI Renjian;LI Anping;WANG Liusong;QI Linjun(Information Engineering University, Zhengzhou 450001, China;75838 Troops, Guangzhou 510000, China;78187 Troops, Chengdu 610000, China;Date Information Office of Henan Provincial Military Command, Zhengzhou 450000, China)

机构地区：[1]信息工程大学,河南郑州450001 [2]75838部队,广东广州510000 [3]78187部队,四川成都610000 [4]河南省军区数据信息室,河南郑州450000

出　　处：《测绘科学技术学报》2021年第1期97-103,110,共8页Journal of Geomatics Science and Technology

基　　金：“双重”基础前沿发展基金项目(f4205)。

摘　　要：提出了一种顾及位置偏差与凹部同异性的面状居民地Morphing变换转向角函数方法。该方法通过构造大比例尺居民地的凸包作为中间图形,辅助与小比例尺居民地进行特征顶点匹配,避免因位置偏差造成的特征点误匹配;针对大比例尺居民地的凹部,依据凹部的模式类型,判定凹部边的同异性;最后构建插值模型,得到中间任意尺度下的面状居民地要素。实验证明方法具有良好的适用性和有效性,与原方法相比,能有效避免因特征点误匹配导致的插值结果顶点乱序现象,同时还兼顾了轮廓特征保持与居民地局部相似,能达到较好的Morphing变换效果。In this paper,an improved method of planar building based on steering angle function is proposed,whose position deviation and concave heterogeneity are considered.In this method,the convex hull of large-scale buildings is constructed to match feature vertices with small-scale buildings,so as to avoid the mismatching of feature vertices caused by position deviation.According to the mode type of concave part belong to large-scale buildings,it is judged that if the sections of concave part are homogeneity or not.Finally,the interpolation model is constructed to obtain the buildings at any scale in the middle.Experimental results show that the proposed method is more applicable and effective than the original method,and it can effectively avoid vertices disorder of interpolation results caused by mismatching of feature vertices.At the same time,it takes the contour features and local similarity of buildings into account,which can achieve good Morphing results.

关 键 词：转角函数 Morphing变换 位置偏差 凹部特征 多尺度表达 

分 类 号：P208[天文地球—地图制图学与地理信息工程]