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- プリマ オキ ディッキ
- 岩手大学工学部情報システム工学科
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- 横山 隆三
- 岩手大学工学部情報システム工学科
書誌事項
- タイトル別名
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- The Development of High Accuracy DEM Generation Algorithm.
- コウセイド ノ DEM オ サクセイ スル タメ ノ アルゴリズム ノ カイハツ
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抄録
The Digital Map 50m Grid (Elevation) of Japan (J-DEM-50m) is a digital elevation model generated from 1: 25, 000 scale topographic maps by the Geographical Survey Institute of Japan. Since its publication in 1993, it has contributed considerably to various fields such as topography, geography, geology and hydrology. J-DEM50m is, however, accompanied with an unrealistic relief and spurious pits caused by shortcomings of its generation algorithm, In this paper, a new algorithm is proposed. It is characterized by (1) an increase in the number of angles from 8 to 16 for searching the steepest slope direction, (2) a composition of interpolation interval with piecewise steepest slope segments and (3) an improved identification method of slope grids. Our evaluation of contour lines reconstruction and identified slope grids from generated DEM shows that the new algorithm provided excellent results for the test areas.
収録刊行物
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- 写真測量とリモートセンシング
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写真測量とリモートセンシング 40 (5), 52-62, 2001
一般社団法人 日本写真測量学会
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詳細情報 詳細情報について
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- CRID
- 1390001204076873344
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- NII論文ID
- 10007659980
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- NII書誌ID
- AN00111450
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- ISSN
- 18839061
- 02855844
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- NDL書誌ID
- 5968355
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可