Acta Optica Sinica, Volume. 39, Issue 5, 0528005(2019)
Improved Dynamic Threshold Cloud Detection Algorithm for Suomi-NPP Visible Infrared Imaging Radiometer
Fig. 1. Spectral response curves of VIIRS and MODIS sensors
Fig. 2. Land surface reflectance of VIIRS and MODIS sensors in different channels. (a) Blue band; (b) green band; (c) red band; (d) near infrared band
Fig. 3. Distributions of land surface reflectance and brightness temperature for different surface features. (a) Reflectance and brightness temperature; (b) brightness temperature difference
Fig. 4. Three-dimensional distributions of brightness temperature for different surface features
Fig. 5. Flow chart of I-DTCDA algorithm for VIIRS data
Fig. 6. Comparison of cloud detection results between UDTCDA and I-DTCDA algorithms for different surface features. (a) Desert, 2014-09-24; (b) desert ,2014-08-12; (c) bare land, 2014-07-09; (d) bare land,2014-06-23; (e) water, 2014-03-20; (f) water,2014-04-23; (g) snow,2014-06-06; (h) snow, 2014-06-20
Fig. 7. Comparisonof cloud detection results between I-DTCDA and VCM algorithms for different surface features. (a) Desert, 2014-06-04; (b) desert, 2014-07-15; (c) bare land, 2014-05-17; (d) bare land, 2014-07-29; (e) water, 2014-10-23; (f) water, 2014-11-13; (g) snow, 2014-02-06; (h) snow, 2014-11-18
Fig. 8. Comparison in overall accuracy between detected and true cloud concentrations for different cloud detection algorithms
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Yulei Chi, Lin Sun, Jing Wei. Improved Dynamic Threshold Cloud Detection Algorithm for Suomi-NPP Visible Infrared Imaging Radiometer[J]. Acta Optica Sinica, 2019, 39(5): 0528005
Category: Remote Sensing and Sensors
Received: Oct. 29, 2018
Accepted: Feb. 19, 2019
Published Online: May. 10, 2019
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