Evaluation of Topographic Correction Effects for Landsat-5 Thematic Mapper Images with Complex Lighting Conditions
- PDF / 3,771,188 Bytes
- 16 Pages / 595.276 x 790.866 pts Page_size
- 57 Downloads / 184 Views
RESEARCH ARTICLE
Evaluation of Topographic Correction Effects for Landsat-5 Thematic Mapper Images with Complex Lighting Conditions Shibin Ma 1,4 & Zhongfa Zhou 2,3 & Yongrong Zhang 2,3 & Yulun An 2,4 & GuangBin Yang 2,4 Received: 27 August 2019 / Revised: 11 August 2020 / Accepted: 25 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract A number of methods are available for topographic correction of remote sensing data, and various approaches have been proposed for the evaluation of topographic correction effects. However, few studies have evaluated the topographic correction effects for images obtained under all possible sun elevation conditions. This study employed three correction methods, namely, Statistical-Empirical (SE), C-correction (C), and the Sun-Canopy-Sensor + C-correction (SCS + C) methods. These were used for topographic correction of 11 images obtained by the Landsat-5 Thematic Mapper sensor from June to December. An evaluation of the effectiveness of these three methods was carried out based on five evaluation indices, with the goal of investigating the variation in the topographic correction effect with changes in lighting conditions and the adaptability of topographic correction methods to those conditions. The results showed that the SE method effectively reduced the dependence of surface reflectance on the terrain when the solar elevation was greater than 46°, yielding a very stable surface reflectance and a low proportion of outliers. At sun elevation below 46°, the SCS + C method has good correction effect. After topographic correction using these three methods, the correction effect was compromised as the lighting conditions weakened. Within areas where the topographic and geographical conditions are similar to that of this study, the correction effect can be divided into three levels based on the solar elevation while obtaining the images, i.e., > 60°, 50–60° and < 50°. Caution should be taken when conducting quantitative research on images obtained when the solar elevation is < 50°. Keywords Topographic correction . Lighting conditions . Landsat-5 TM . Evaluation . Multi-criteria
Introduction Remote sensing data provide objective, real-time, large-scale, and continuous data both temporally and spatially (Richards 2013); therefore, these data are widely used in land cover mapping, monitoring of changes in vegetation, ecosystem parameter inversion, as well as in environmental and disaster
* Zhongfa Zhou [email protected] 1
Department of Environment and Geography, LiuPanshui Normal University, LiuPanshui 553004, China
2
School of Geography and Environment/School of Karst Science, GuiZhou Normal University, GuiYang 550001, China
3
State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of GuiZhou Province, GuiYang 550001, China
4
Guizhou Mountain Resources and Environmental Remote Sensing Application Laboratory, GuiYang 550001, China
monitoring (Hansen and Loveland 2012; Myneni et al. 1997; Pan et al. 2018; Zhang et al. 2017; Dong et a
Data Loading...
