测绘科学技术学报2025，Vol.41Issue(1)：88-96,9.DOI:10.3969/j.issn.1673-6338.2025.01.013
一种基于多级角度的面实体形状相似度计算方法及应用
A Calculation Method of Areal Entities Shape Similarity Based on Multi-scale Angle and Its Application
摘要
Abstract
Shape is one of the common features of areal entities geometric matching.There are still the problems of weak shape description ability,poor robustness and complex calculation process in the existing shape similarity calculation methods of areal entities.For this reason,an areal entities shape similarity calculation method based on multi-scale angle is proposed in this paper.Firstly,the contour of the areal entity is resampled at equal intervals.And then taking each contour point as the center,a three-step strategy is adopted to divide the contour into multi-ple scales,and the areal entities contour is described from local to overall by using the angle under different scales.Secondly,the influence of solid rotation on the calculation results is eliminated by means of discrete Fourier trans-form.Finally,a comprehensive similarity model of areal entities is constructed based on direction,position,area and shape.Experiments show that the proposed shape similarity calculation method is not affected by entity rota-tion,scaling and translation,and has higher computational efficiency and stronger shape description ability.The areal entities comprehensive similarity model is applied to the geometric matching of the lakes data on the Tibetan Plateau,whose results indicate this model has good performance.关键词
多级角度/离散傅里叶变换/形状相似度/面实体/综合相似度/几何匹配Key words
multi-scale angle/discrete Fourier transform/shape similarity/areal entities/comprehensive similari-ty/geometric matching分类
天文与地球科学引用本文复制引用
刘贺,郭黎,曹瑜娟,袁远,朱闯..一种基于多级角度的面实体形状相似度计算方法及应用[J].测绘科学技术学报,2025,41(1):88-96,9.基金项目
国家科技部基础资源调查专项(2019FY202501). （2019FY202501）
