Technology and Methodology |
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A STUDY OF NIGHT CLOUD DETECTION BASED ON MODIS IMAGE |
HOU Yue 1,2, LIU Pei-xun 1,CHEN Shun-yun 1,LIU Shao-feng 2 |
1. State Key Laboratory of Earthquake Dynamics,Institute of Geology, China Earthquake Administration, Beijing
100029, China; 2. State Key Laboratory of Geological Processes and Mineral Resources,China University of
Geosciences, Beijing 100083, China |
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Abstract Based on traditional cloud detection methods, the authors developed a new algorithm for detecting night
cloud according to characteristics of MODIS sensors which have high spectral resolution and time resolution. The
algorithm includes the single-scene cloud detection method and the combined multi-scene cloud detection method. The
test of night cloud detection on the N-S seismotectonic zone in China shows that this algorithm is effective in
detecting night cloud on the MODIS image, and thus it can provide a basis for the effective application of night
MODIS image.
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Issue Date: 13 July 2009
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