Snake Model for the Extraction of Loess Shoulder-line from DEMs
文献类型：期刊论文
| 作者 | YAN Shi-jiang ; TANG Guo’an ; LI Fa-yuan ; ZHANG Lei |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2014-11 |
| 卷号 | 11期号:6页码:1552-1559 |
| 关键词 | Snake model DEM loess shoulder-line |
| 通讯作者 | TANG Guo’an |
| 英文摘要 | Shoulder lines are the most important landform demarcations for geographical analysis, soil erosion modeling and land use planning in the Loess Plateau area of China. This paper proposes an automatic, effective and accurate method of determining loess shoulder line from DEMs by integrating a hydrological D8 algorithm and a snake model. The watershed boundary line is adopted as the initial contour which evolves to identify the exact position of loess shoulder-line by the guidance of an external force of snake model from DEMs. Experiments show that the method overcomes the difficulties in both threshold selection for edge detection and the disconnecting issues in former extraction approaches. The accuracy evaluation of shoulder-line maps from the two test sites of the loess plateau area show obvious improvements in the extraction. The average contour matching distance of the new method is 12.0 m on 5 m resolution DEM, and shows improvement in the accuracy and continuity. The comparisons of accuracy evaluations of the two test sites show that the snake model method performs better in the loess plain area than in the area with high gully density. |
| 收录类别 | SCI |
| 公开日期 | 2014-11-18 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7423]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.6 |
| 推荐引用方式 GB/T 7714 | YAN Shi-jiang,TANG Guo’an,LI Fa-yuan,et al. Snake Model for the Extraction of Loess Shoulder-line from DEMs[J]. Journal of Mountain Science,2014,11(6):1552-1559. |
| APA | YAN Shi-jiang,TANG Guo’an,LI Fa-yuan,&ZHANG Lei.(2014).Snake Model for the Extraction of Loess Shoulder-line from DEMs.Journal of Mountain Science,11(6),1552-1559. |
| MLA | YAN Shi-jiang,et al."Snake Model for the Extraction of Loess Shoulder-line from DEMs".Journal of Mountain Science 11.6(2014):1552-1559. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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