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Brian Freitag

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Proceedings Article | 7 October 2019 Presentation + Paper

Pixel level smoke detection model with deep neural network

Muthukumaran Ramasubramanian, Aaron Kaulfus, Manil Maskey, Rahul Ramachandran, Iksha Gurung, Brian Freitag, Sundar Christopher

Proceedings Volume 11155, 1115515 (2019) https://doi.org/10.1117/12.2532562

KEYWORDS: Data modeling, Atmospheric modeling, Clouds, Reflectivity, Satellites, Performance modeling, Neural networks, Aerosols, Remote sensing, Shortwaves

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Traditional analysis of smoke extent from satellite imagery relies largely on spectral analysis using multispectral data thereby requiring large data volumes or subjective and time-consuming evaluation. These methods are not scalable to observing capabilities of the new generation of remote sensing platforms. We propose an automated, deep learning based detection model capable of identifying smoke plumes from shortwave reflectance for the Geostationary Operational Environmental Satellite R series of satellites. Hand-labelled, past instances of smoke plumes from the NOAA Hazard Mapping System, quality controlled for spatiotemporal accuracy by a subject matter expert, comprises the reference truth dataset. The detection pipeline comprises of pre-process, detection, and post-process stages. A Convolutional Neural Network (CNN), trained on smoke events with varying optical thicknesses and sun-satellite viewing geometry is used to predict the probability score for a given pixel containing smoke. The model is able to detect smoke over both low and high reflectance surfaces and discriminate smoke from clouds though challenges remain in identifying optically thin smoke. Finally, we discuss a web-based interface to visualize daily smoke prediction and analyze the predictions over time.

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