Next Article in Journal
Semantic Geometric Modelling of Unstructured Indoor Point Cloud
Previous Article in Journal
Spatiotemporal Analysis of Carbon Emissions and Carbon Storage Using National Geography Census Data in Wuhan, China
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
ISPRS Int. J. Geo-Inf. 2019, 8(1), 8; https://doi.org/10.3390/ijgi8010008

A Reconstruction Method for Broken Contour Lines Based on Similar Contours

1
Chinese Academy of Surveying and Mapping, 28 Lianhuachi West Road, Beijing 100830, China
2
College of Geomatics, Shandong University of Science and Technology, 579 Qianwangang Road, Qingdao 266590, China
*
Author to whom correspondence should be addressed.
Received: 30 October 2018 / Revised: 20 December 2018 / Accepted: 22 December 2018 / Published: 26 December 2018
  |  
PDF [4777 KB, uploaded 26 December 2018]
  |  

Abstract

The reconstruction of a broken contour line is a prerequisite for the automated processing of contour lines. When the situation with broken contour lines is severe or the terrain is more complex, incorrect and missing connections are most likely to occur using traditional methods. In this paper, a reconstruction method for broken contour lines based on similar and completely closed contours is proposed. First, node densification is conducted on broken contour lines to improve the identification accuracy of the reference line. Second, the discrete Fréchet distance is used to select a reference line and perform reconstruction. Finally, the actual data of Yunnan Province are utilized for verification. The results show that the method proposed in this paper can achieve better reconstruction of broken contour lines, especially for severe broken contour situations or complex terrains; the reconstruction accuracy is significantly improved over that of the traditional method, indicating good feasibility. View Full-Text
Keywords: broken contour line; reconstruction; reference line; similarity measurement; Fréchet distance broken contour line; reconstruction; reference line; similarity measurement; Fréchet distance
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Li, C.; Liu, X.; Wu, W.; Hao, Z. A Reconstruction Method for Broken Contour Lines Based on Similar Contours. ISPRS Int. J. Geo-Inf. 2019, 8, 8.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
ISPRS Int. J. Geo-Inf. EISSN 2220-9964 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top