A Drainage Extraction Method for Wide Area Using Digital Elevation Model of Fine Grid Size.
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- SHIRASAWA Michio
- Information Science Dept., Faculty of Engineering, Iwate University
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- PRIMA Oky Dicky A.
- Information Science Dept., Faculty of Engineering, Iwate University
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- YOKOYAMA Ryuzo
- Information Science Dept., Faculty of Engineering, Iwate University
Bibliographic Information
- Other Title
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- ５０ｍメッシュＤＥＭによる広域の水系抽出手法
- 50m メッシュ DEM ニ ヨル コウイキ ノ スイケイ チュウシュツ シュホウ
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Abstract
An algorithm to extract drainage networks by using digital elevation model (DEM) was proposed. It has three characteristic points, i.e., pre-specification of inland water areas, shortest path for outlet in flat areas, and restriction of filling level for depression areas. The algorithm was applied to DEM with 50m grid size covering Tohoku district of Japan, which has about 35 million inland grid points. The extracted drainage networks were relevantly compatible to those described in 1/25, 000 topographical maps, and also included a lot of finer drainages in rugged areas. The processing time by using HP9000/C3000 workstation system, however, was about 25 minutes.
Journal
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- Journal of the Japan society of photogrammetry and remote sensing
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Journal of the Japan society of photogrammetry and remote sensing 39 (5), 35-44, 2000
Japan Society of Photogrammetry and Remote Sensing
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Details 詳細情報について
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- CRID
- 1390001204078296960
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- NII Article ID
- 10007659999
- 10004968399
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- NII Book ID
- AN00111450
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- ISSN
- 18839061
- 02855844
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- NDL BIB ID
- 5561239
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed
