A heuristic DEM generalization by combining catchments. Issue 25 (13th December 2022)
- Record Type:
- Journal Article
- Title:
- A heuristic DEM generalization by combining catchments. Issue 25 (13th December 2022)
- Main Title:
- A heuristic DEM generalization by combining catchments
- Authors:
- Li, Jingzhong
Shen, Yilang
Gao, Aji
Chen, Kai
Zhang, Yong
Ai, Tinghua - Abstract:
- Abstract: Multi-scale digital elevation model (DEM) is an important content of digital terrain analysis. To generate multi-scale DEM, this study reports a heuristic DEM generalization method. The key of DEM generalization is to maintain the main topographic features and remove the minor topographic features. Our method takes catchment as generalizing object, not single grid pixel as generalizing object. In this way, DEM simplification can be achieved on the basis of maintaining the main terrain characteristics. Compared with the resample method, VIP method and low pass filter method, the proposed method can preserve the main topographic features well when the minor topographic features are deleted. Our main contribution lies in: taking terrain information rather than raw data as the generalizing object, which improves the rationality of the generalizing results; and the heuristic method proposed in this paper has good operability and high automation. Highlights: A heuristic DEM generalization method by combining catchments is developed; The proposed DEM simplification can maintain the main terrain characteristics; The heuristic method proposed in this paper has good operability and high automation;
- Is Part Of:
- Geocarto international. Volume 37:Issue 25(2023)
- Journal:
- Geocarto international
- Issue:
- Volume 37:Issue 25(2023)
- Issue Display:
- Volume 37, Issue 25 (2023)
- Year:
- 2023
- Volume:
- 37
- Issue:
- 25
- Issue Sort Value:
- 2023-0037-0025-0000
- Page Start:
- 9392
- Page End:
- 9407
- Publication Date:
- 2022-12-13
- Subjects:
- Digital elevation model -- DEM generalization -- combination of catchments -- valley line -- virtual modeling -- cartography -- topography -- terrain
Remote sensing -- Periodicals
Geographic information systems -- Periodicals
Geology -- Periodicals
Cartography -- Periodicals
621.3678 - Journal URLs:
- http://www.tandf.co.uk/journals/titles/10106049.asp ↗
http://www.tandfonline.com/toc/tgei20/current ↗
http://www.tandfonline.com/ ↗ - DOI:
- 10.1080/10106049.2021.2017019 ↗
- Languages:
- English
- ISSNs:
- 1010-6049
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4116.917700
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 26074.xml