面状居民地Morphing变换的转向角函数法

doi:10.11947/j.AGCS.2015.20140333

测绘学报 ›› 2015, Vol. 44 ›› Issue (7): 797-804.doi: 10.11947/j.AGCS.2015.20140333

面状居民地Morphing变换的转向角函数法

谢天, 李精忠

武汉大学资源与环境科学学院, 湖北武汉 430079

收稿日期:2014-06-19 修回日期:2014-12-02 发布日期:2015-07-28
通讯作者: 李精忠,E-mail:lilideyx@126.com E-mail:lilideyx@126.com
作者简介:谢天(1993-),男,硕士生,主要从事空间数据库多尺度表达的理论与方法研究。E-mail:xtnyforbless@gmail.com
基金资助:
国家自然科学基金青年基金(41001229);国家863计划(2012AA12A404);虚拟地理环境教育部重点实验室资助项目(2012VGE03);国家基础科学人才培养基金(J1103409);卫星测绘技术与应用国家测绘地理信息局重点实验室经费(KLSMTA-201308)

Steering Angle Function Algorithm of Morphing of Residential Area

XIE Tian, LI Jingzhong

School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China

Received:2014-06-19 Revised:2014-12-02 Published:2015-07-28
Supported by:
The National Natural Science Foundation of China (No.41001229);The National High-tech Research and Development Program of China (863 Program) (No.2012AA12A404);Virtual Geographic Environment, Ministry of Education Key Laboratory of funded projects (No.2012VGE03);National Science Talents Fund “Geographical Sciences, Wuhan University of Science Base” Research Capacity Training Program (No. J1103409);Key Laboratory of Satellite Mapping Technology and Application, National Administration of Surveying, Mapping and Geoinformation(No.KLSMTA-201308)

摘要/Abstract

摘要：

提出了一种基于转向角函数的面状居民地morphing方法。针对同名居民地实体在两个不同比例尺下的表达,将传统矢量GIS的坐标串表达形式转为转向角函数表达形式,基于转向角函数分析多边形边特征在不同比例尺下的共性与差异,融合得到了任意中间比例尺下的多边形的转向角函数,最后将中间比例尺下的转向角函数还原为矢量坐标串形式,获得多边形在对应尺度的中间插值形状。试验证明,本文提出的基于转向角函数的面状居民地morphing方法对面状居民地多边形具有较好的适应性,能在保持直角化边界特征的前提下实现连续地图综合与多尺度表达。

关键词: 转向角函数, morphing, 多尺度表达, 连续综合

Abstract:

A residential area feature morphing method based on steering angle function is presented. To residential area with the same representation under two different scales,transforming the representation of the residential area polygon from vector coordinates to steering angle function,then using the steering angle function to match,and finding out the similarity and the differences between the residential areas under different scale to get the steering angle function of the the residential areas under any middle scale,the final,transforming the middle scale steering angle function to vector coordinates form,and get the middle shape interpolation of the the residential area polygon.Experimental results show:the residential area morphing method by using steering angle function presented can realize the continuous multi-scale representation under the premise of keeping in shape for the residential area with the rectangular boundary features.

Key words: steering angle function, morphing, multi-scale representation, continuous generalization

中图分类号:

P208

谢天, 李精忠. 面状居民地Morphing变换的转向角函数法[J]. 测绘学报, 2015, 44(7): 797-804.

XIE Tian, LI Jingzhong. Steering Angle Function Algorithm of Morphing of Residential Area[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(7): 797-804.

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面状居民地Morphing变换的转向角函数法

Steering Angle Function Algorithm of Morphing of Residential Area

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