| An Adaptive Method of High Accuracy Surface Modeling and Its Application to Simulating Elevation Surfaces | |
| Yue T. X. ; Chen C. F. ; Li B. L. | |
| 2010 | |
| 关键词 | major terrestrial ecosystems error china uncertainty systems |
| 英文摘要 | An adaptive method is employed to speed up computation of high accuracy surface modeling (HASM), for which an error indicator and an error estimator are developed. Root mean-square error (RMSE) is used as the error estimator that is formulated as a function of gully density and grid cell size. The error indicator is developed on the basis of error surfaces for different spatial resolutions, which are interpolated in terms of the absolute errors calculated at sampled points while paying attention to the landform characteristics. The error surfaces indicate the magnitude and distribution of errors in each step of adaptive refinement and make spatial changes to the errors in the simulation process visualized. The adaptive method of high accuracy surface modeling (HASM-AM) is applied to simulating elevation surface of the Dong-Zhi tableland with 27.24 million pixels at a spatial resolution of 10 m 10 m. Test results show that HASM-AM has greatly speeded up computation by avoiding unnecessary calculations and saving memory. In addition, HASM-AM improves simulation accuracy. |
| 出处 | Transactions in Gis |
| 卷 | 14 |
| 期 | 5 |
| 页 | 615-630 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1361-1682 |
| 内容类型 | SCI/SSCI论文 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22477]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yue T. X.,Chen C. F.,Li B. L.. An Adaptive Method of High Accuracy Surface Modeling and Its Application to Simulating Elevation Surfaces. 2010. |
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