Downscaling land surface temperatures with multi-spectral and multi-resolution images
Downscaling land surface temperatures with multi-spectral and multi-resolution images
复制标题
利用多光谱和多分辨率图像降低地表温度
DOI:
10.1016/j.jag.2012.01.003
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发表时间:
2012-08
影响因子:
7.5
通讯作者:
Li, Jing
中科院分区:
文献类型:
--
作者:
Zhan, Wenfeng;Chen, Yunhao;Wang, Jinfei;Zhou, Ji;Quan, Jinling;Liu, Wenyu;Li, Jing
Land surface temperature (LST) plays an important role in many fields. However, the limited spatial resolution of current thermal sensors impedes the utilization of LSTs. Based on a theoretical framework of thermal sharpening, this report presents an Enhanced Generalized Theoretical Framework (EGTF) to downscale LSTs using multi-spectral (MS) and multi-resolution images. MS proxy-sharpening and LST downscaling are combined under EGTF. Simulated images upscaled from Enhanced Thematic Mapper Plus (ETM+) and Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data are produced for indirect validations. Validation of MS proxy-sharpening shows that EGTF is better than the Gram-Schmidt (GS) and the Principle Component (PC) methods, yielding a lower root mean square error (RMSE) and ERGAS (erreur relative globale adimensionnelle de synthèse) and, thus, maintaining higher spectral similarity. For LST downscaling, validations show that EGTF has a higher accuracy than the Unmixing-Based Image Fusion (UBIF) method and indicate that the proxy-sharpening process improves the accuracy of downscaled LSTs. Further discussions regarding the selection of the moving-window size (MWS) demonstrate that the MWS could be determined by the range in a semi-variance analysis of scaling factor images.
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影响因子:
13.5
作者:
R. Zurita-Milla;G. Kaiser;J. Clevers;W. Schneider;M. Schaepman
通讯作者:
R. Zurita-Milla;G. Kaiser;J. Clevers;W. Schneider;M. Schaepman
影响因子:
8.2
作者:
W. Zhan;Yunhao Chen;Ji Zhou;Jing Li;Wenyu Liu-
通讯作者:
W. Zhan;Yunhao Chen;Ji Zhou;Jing Li;Wenyu Liu-
DOI:
10.1109/36.763276
发表时间:
1999-05
期刊:
IEEE Trans. Geosci. Remote. Sens.
影响因子:
--
作者:
B. Zhukov;D. Oertel;F. Lanzl;G. Reinhäckel
通讯作者:
B. Zhukov;D. Oertel;F. Lanzl;G. Reinhäckel
DOI:
10.1016/j.jag.2010.11.001
发表时间:
2011-04-01
影响因子:
7.5
作者:
Jeganathan, C.;Hamm, N. A. S.;Dadhwal, V. K.
通讯作者:
Dadhwal, V. K.
影响因子:
3.4
作者:
Liu, JG
通讯作者:
Liu, JG