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New Approach for Snow Cover Detection through Spectral Pattern Recognition with MODIS Data
Joint Authors
Yeom, Jong-Min
Han, Kyung-Soo
Seo, Minji
Lee, Kyeong-Sang
Jin, Donghyun
Choi, Sungwon
Kim, Jae-Jin
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-21
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Snow cover plays an important role in climate and hydrology, at both global and regional scales.
Most previous studies have used static threshold techniques to detect snow cover, which can lead to errors such as misclassification of snow and clouds, because the reflectance of snow cover exhibits variability and is affected by several factors.
Therefore, we present a simple new algorithm for mapping snow cover from Moderate Resolution Imaging Spectroradiometer (MODIS) data using dynamic wavelength warping (DWW), which is based on dynamic time warping (DTW).
DTW is a pattern recognition technique that is widely used in various fields such as human action recognition, anomaly detection, and clustering.
Before performing DWW, we constructed 49 snow reflectance spectral libraries as reference data for various solar zenith angle and digital elevation model conditions using approximately 1.6 million sampled data.
To verify the algorithm, we compared our results with the MODIS swath snow cover product (MOD10_L2).
Producer’s accuracy, user’s accuracy, and overall accuracy values were 92.92%, 78.41%, and 92.24%, respectively, indicating good overall classification accuracy.
The proposed algorithm is more useful for discriminating between snow cover and clouds than threshold techniques in some areas, such as those with a high viewing zenith angle.
American Psychological Association (APA)
Lee, Kyeong-Sang& Jin, Donghyun& Yeom, Jong-Min& Seo, Minji& Choi, Sungwon& Kim, Jae-Jin…[et al.]. 2017. New Approach for Snow Cover Detection through Spectral Pattern Recognition with MODIS Data. Journal of Sensors،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1187057
Modern Language Association (MLA)
Lee, Kyeong-Sang…[et al.]. New Approach for Snow Cover Detection through Spectral Pattern Recognition with MODIS Data. Journal of Sensors No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1187057
American Medical Association (AMA)
Lee, Kyeong-Sang& Jin, Donghyun& Yeom, Jong-Min& Seo, Minji& Choi, Sungwon& Kim, Jae-Jin…[et al.]. New Approach for Snow Cover Detection through Spectral Pattern Recognition with MODIS Data. Journal of Sensors. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1187057
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1187057