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| 高分一号遥感影像在青藏高原湖泊的提取方法 | |
| 引用本文： | 戚知晨,赵琪. 高分一号遥感影像在青藏高原湖泊的提取方法[J]. 测绘与空间地理信息, 2018, 0(2): 124-127,130. DOI: 10.3969/j.issn.1672-5867.2018.02.034 |
| 作者姓名： | 戚知晨 赵琪 |
| 作者单位： | 山东科技大学 测绘科学与工程学院,山东 青岛,266590 |
| 摘 要： | 基于高分一号影像,选用归一化差异水体指数(NDWI)阈值法、LBV变换法、"全域-局部"水体自动分割法,分别提取了布若错、赛布错和雅根错的边界。分析对比3种方法,结果显示NDWI阈值法与LBV变换法从整张影像中提取湖泊边界,影像中的非湖泊范围的区域如阴影区等,会误判为湖泊的像元;"全域-局部"水体自动分割法将提取范围从全域转为局部,减少了非湖泊范围内地物信息的干扰,并对每个湖泊的NDWI阈值独立判断,实现了湖泊边界的精细提取。 |
| 关 键 词： | 高分一号 NDWI阈值法 LBV变换法 " 全域-局部" 分割法 GF-1 NDWI threshold method LBV transformation method the " global-local" segmentation |
The Extraction Method of the Tibetan Plateau' s Lakes Based on GF-1 Remote Sensing Image |
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| QI Zhichen,ZHAO Qi. The Extraction Method of the Tibetan Plateau' s Lakes Based on GF-1 Remote Sensing Image[J]. Geomatics & Spatial Information Technology, 2018, 0(2): 124-127,130. DOI: 10.3969/j.issn.1672-5867.2018.02.034 | |
| Authors: | QI Zhichen ZHAO Qi |
| Abstract: | In this paper, we use normalized difference water index ( NDWI) threshold method, LBV transformation method and the"global-local" segmentation to extract the boundary of Burog Co, Serbug Co and Yaggain Canco, based on the image of GF-1 re-spectively. By comparing the three methods, the results show the NDWI threshold method and the LBV transformation method extract the lakes' boundary from the whole image, the non-lake area in the image, such as the shaded area , produce the pixels which is wrongly classified to lake. Automated water delineation method based on the"global-local" iterative scheme extract lakes' boundary from global to local, reducing the non-lake range of ground information interference, judging each lake' s NDWI threshold independ-ently to achieve the fine extraction of the lakes' boundary. |
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| 本文献已被 CNKI 万方数据 等数据库收录！ | |