地球信息科学学报 ›› 2017, Vol. 19 ›› Issue (11): 1522-1529.doi: 10.3724/SP.J.1047.2017.01522
李治1,2,3(), 杨晓梅2,*(
), 孟樊2, 陈曦1, 杨丰硕2,3
收稿日期:
2017-04-30
修回日期:
2017-08-25
出版日期:
2017-11-10
发布日期:
2017-12-08
通讯作者:
杨晓梅
E-mail:lizhi@lreis.ac.cn;yangxm@lreis.ac.cn
作者简介:
作者简介:李 治(1986-),男,博士生,研究方向为多源遥感信息协同提取、城市景观生态分析。E-mail:
基金资助:
Li Zhi1,2,3(), Yang Xiaomei2,*(
), Meng Fan2, Chen Xi1, Yang Fengshuo2,3
Received:
2017-04-30
Revised:
2017-08-25
Online:
2017-11-10
Published:
2017-12-08
Contact:
Yang Xiaomei
E-mail:lizhi@lreis.ac.cn;yangxm@lreis.ac.cn
摘要:
城市建成区边界是城市研究重要的基础信息,也是落实城市功能空间布局、实施界限管控的前提。DMSP/OLS夜间灯光数据已被广泛应用于城市建成区的提取,但由于受饱和、扩散及低分辨率问题的影响,导致仅依靠DMSP/OLS NTL映射城市建成区仍然是一个巨大的挑战。本文以京津冀为例,采用MODIS NDVI和DMSP / OLS夜光数据相结合解决NTL影像的饱和及扩散问题,提取城市建成区潜在范围,并辅以Landsat NDVI数据,采用本文提出的最大自相关双阈值方法进行自适应修正,最后采用目视解译对结果进行验证。实验结果表明,多源遥感协同方法提取城市建成区的总体精度和kappa系数分别为92.9%和0.88,在空间分布和统计数据中均有较高的有效性和可靠性。
李治, 杨晓梅, 孟樊, 陈曦, 杨丰硕. 城市建成区多源遥感协同提取方法研究[J]. 地球信息科学学报, 2017, 19(11): 1522-1529.
Li Zhi,Yang Xiaomei,Meng Fan,Chen Xi,Yang Fengshuo. The Method of Multi-source Remote Sensing Synergy Extraction in Urban Built-up Area[J]. Journal of Geo-information Science, 2017, 19(11): 1522-1529.
表1
数据源信息表"
数据类型 | 数据源名称 | 分辨率及数据类型 | 数据来源 | 遥感分类作用 |
---|---|---|---|---|
分类信息源 | GlobeLand30 | 30 m分辨率栅格数据 | http://www.globeland30.org | 获取人造地表覆盖30 m分辨率一级类数据,获取潜在建成区内种子区域 |
MODIS NDVI | 16天250 m合成栅格数据 | http://modis.gsfc.nasa.gov | 用于修正DMSP/OLS灯光数据的扩散问题 | |
DMSP-OLS | 1 km分辨率栅格数据 | http://ngdc.noaa.gov | 用于获取潜在城市建成区范围 | |
统计年鉴 | 统计数据 | http://www.stats.gov.cn/tjsj/ndsj/ | 自动获取潜在城市建成区阈值 | |
Landsat TM | 30 m分辨率纠正图像 | http://glovis.usgs.gov | 获取30 m精度的城市建成区信息 | |
验证数据 | Google Earth | 高分辨率纠正影像 | http://google-earth.cn.softonic.com | 采用目视解译,作为结果验证 |
表2
采用统计数据对提取方法进行精度评价"
统计数据/km2 | 250 m阈值法提取结果/km2 | 30 m双阈值提取结果/km2 | 250 m相对误差% | 30 m相对误差% | |
---|---|---|---|---|---|
北京市 | 1306 | 1741.2 | 1439 | -33.32 | -10.01 |
天津市 | 736 | 1054.8 | 665.6 | -43.32 | 9.57 |
保定市 | 144 | 190.9 | 127.9 | -32.57 | 8.40 |
石家庄市 | 217 | 353.5 | 259.2 | -62.90 | -7.47 |
沧州市 | 64 | 390.3 | 79.1 | -181.72 | -7.97 |
承德市 | 114 | 307.2 | 99 | -169.47 | 7.89 |
邯郸市 | 121 | 180.4 | 108 | -49.09 | 9.92 |
衡水市 | 46 | 57.5 | 41.6 | -25.00 | 9.57 |
秦皇岛市 | 97 | 185.7 | 112.7 | -91.44 | -8.97 |
邢台市 | 79 | 113.6 | 76.9 | -43.80 | 2.66 |
张家口市 | 86 | 233.9 | 76.7 | -171.98 | 9.07 |
唐山市 | 249 | 403.3 | 185.5 | -61.97 | -9.04 |
廊坊市 | 65 | 200.6 | 82 | -208.62 | -9.54 |
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