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Sensors 2016, 16(12), 2153; doi:10.3390/s16122153

Classification of Clouds in Satellite Imagery Using Adaptive Fuzzy Sparse Representation

Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
Intelligent Household Appliances Engineering Center, Zhejiang Business Technology Institute, Ningbo 315012, China
Author to whom correspondence should be addressed.
Academic Editors: Gherardo Chirici and Duccio Rocchini
Received: 19 October 2016 / Revised: 7 December 2016 / Accepted: 9 December 2016 / Published: 16 December 2016
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Automatic cloud detection and classification using satellite cloud imagery have various meteorological applications such as weather forecasting and climate monitoring. Cloud pattern analysis is one of the research hotspots recently. Since satellites sense the clouds remotely from space, and different cloud types often overlap and convert into each other, there must be some fuzziness and uncertainty in satellite cloud imagery. Satellite observation is susceptible to noises, while traditional cloud classification methods are sensitive to noises and outliers; it is hard for traditional cloud classification methods to achieve reliable results. To deal with these problems, a satellite cloud classification method using adaptive fuzzy sparse representation-based classification (AFSRC) is proposed. Firstly, by defining adaptive parameters related to attenuation rate and critical membership, an improved fuzzy membership is introduced to accommodate the fuzziness and uncertainty of satellite cloud imagery; secondly, by effective combination of the improved fuzzy membership function and sparse representation-based classification (SRC), atoms in training dictionary are optimized; finally, an adaptive fuzzy sparse representation classifier for cloud classification is proposed. Experiment results on FY-2G satellite cloud image show that, the proposed method not only improves the accuracy of cloud classification, but also has strong stability and adaptability with high computational efficiency. View Full-Text
Keywords: satellite imagery; cloud classification; adaptive fuzzy membership function; adaptive fuzzy sparse representation satellite imagery; cloud classification; adaptive fuzzy membership function; adaptive fuzzy sparse representation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jin, W.; Gong, F.; Zeng, X.; Fu, R. Classification of Clouds in Satellite Imagery Using Adaptive Fuzzy Sparse Representation. Sensors 2016, 16, 2153.

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