Complex urban boundary extraction based on topological interpolation and spectral feature

Acta Geodaetica et Cartographica Sinica

WANG Hao¹  LIU Jiping¹  NING Xiaogang¹  YU Linan¹ 

[1] Chinese Academy of Surveying and Mapping, Beijing 100830, China;

关键词: topological interpolation;    spectral feature;    corner;    high resolution;    complex urban boundary;   

DOI  :  10.11947/j.AGCS.2019.20180126

来源: DOAJ

【 摘 要 】

Complex urban boundary usually has buildings with greatly different size, rugged forest area and scattered small buildings, which makes many urban extraction algorithms ineffective. In order to solve this problem, a method based on topological interpolation theory and spectral featureis proposed, and it can be applied to complex urban boundary extraction from high resolution imagery. On the one hand, feature corners of big buildings are inserted to avoid the urban boundary lose caused by the sparse feature points. On the other hand, spectral feature is made full use of to remove the redundancy feature points brought by rugged forest area and scattered small buildings, which can reduce the wrong boundary extraction. The experiments and compared analysis show that the new method has a good robustness and high accuracy.

【 授权许可】

Unknown