IGSNRR OpenIR
A modified HASM algorithm and its application in DEM construction
Jiang, Ling1; Zhao, Mingwei1; Yue, Tianxiang2; Zhao, Na2; Wang, Chun1; Sun, Jinglu3
2018-09-01
Source PublicationEARTH SCIENCE INFORMATICS
ISSN1865-0473
Volume11Issue:3Pages:423-431
Corresponding AuthorZhao, Mingwei(zhaomw@lreis.ac.cn)
AbstractIn many spatial interpolation fields, high accuracy surface modeling (HASM) has yielded better accuracy than classical interpolation methods. The Gaussian equation is the core of the HASM algorithm; The current version of the HASM method builds the Gaussian equation in Cartesian coordinates and, computes the two partial derivatives of the surface in the horizontal and vertical directions for each grid. In this paper, a modified HASM method is proposed that integrates flow paths to improve the original HASM methodology. The modified HASM approach involves two steps. The first step generates an initial DEM, which is used to compute the flow path. Then, the second step is conducted based on scatter points and the flow direction. The output from this step is better than the initial DEM. First, we used a theoretical mathematical surface to validate the correctness of the modified model. Then, we chose a small study area where the topography is affected by hydrological erosion for analysis. The test results showed that the modified HASM method constructed a DEM with low MAE and RMSE values compared to those of traditional methods, and it more accurately characterized topographic features. Finally, a relatively gently sloping area was selected to validate that the applicability of the new method in other areas.
KeywordHASM Flow direction DEM Accuracy
DOI10.1007/s12145-018-0341-y
WOS KeywordDIGITAL ELEVATION MODELS ; HIGH-ACCURACY ; SPATIAL INTERPOLATION ; VERIFICATION ; UNCERTAINTY ; DENSITY
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[41701450] ; Natural Science Foundation of China[41571398] ; Natural Science Foundation of China[41501445] ; Key Project of Natural Science Research of Anhui Provincial Department of Education[KJ2016A536] ; Research project on the application of public welfare Technology in Anhui Province[1704f0704064] ; Anhui Provincial Natural Science Foundation of China[1608085QD77]
Funding OrganizationNatural Science Foundation of China ; Key Project of Natural Science Research of Anhui Provincial Department of Education ; Research project on the application of public welfare Technology in Anhui Province ; Anhui Provincial Natural Science Foundation of China
WOS Research AreaComputer Science ; Geology
WOS SubjectComputer Science, Interdisciplinary Applications ; Geosciences, Multidisciplinary
WOS IDWOS:000441233500008
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54541
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Mingwei
Affiliation1.Chuzhou Univ, Anhui Ctr Collaborat Innovat Geog Informat Integr, Chuzhou 239000, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
3.Anhui Inst Econ, Hefei 230051, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Ling,Zhao, Mingwei,Yue, Tianxiang,et al. A modified HASM algorithm and its application in DEM construction[J]. EARTH SCIENCE INFORMATICS,2018,11(3):423-431.
APA Jiang, Ling,Zhao, Mingwei,Yue, Tianxiang,Zhao, Na,Wang, Chun,&Sun, Jinglu.(2018).A modified HASM algorithm and its application in DEM construction.EARTH SCIENCE INFORMATICS,11(3),423-431.
MLA Jiang, Ling,et al."A modified HASM algorithm and its application in DEM construction".EARTH SCIENCE INFORMATICS 11.3(2018):423-431.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jiang, Ling]'s Articles
[Zhao, Mingwei]'s Articles
[Yue, Tianxiang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jiang, Ling]'s Articles
[Zhao, Mingwei]'s Articles
[Yue, Tianxiang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jiang, Ling]'s Articles
[Zhao, Mingwei]'s Articles
[Yue, Tianxiang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.