Exploration of feasible methods for detecting nighttime clouds using a digital camera without a NIR-cut filter

Nofel Lagrosas; Hiroaki Kuze; Tatsuo Shiina

doi:10.1117/12.2604184

14 November 2021 Exploration of feasible methods for detecting nighttime clouds using a digital camera without a NIR-cut filter

Nofel Lagrosas, Hiroaki Kuze, Tatsuo Shiina

Author Affiliations +

Proceedings Volume 11914, SPIE Future Sensing Technologies 2021; 119140R (2021) https://doi.org/10.1117/12.2604184
Event: SPIE Future Sensing Technologies, 2021, Online Only

Abstract

Nighttime clouds are detected using a camera without a NIR-cut filter by exploring the pixel value distribution in each red, green, and blue (RGB) color space from clear and 100% cloudy sky images. The removal of the NIR-cut filter enhances the pixel values of each color space due to the additional NIR signals. Cloud pixels can be separated from clear sky pixels by only using each color space and applying the appropriate threshold. Exploring different cloud detection methods is vital in our ongoing research activity collecting clear and cloudy sky images in other countries using this camera.

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Nofel Lagrosas, Hiroaki Kuze, and Tatsuo Shiina "Exploration of feasible methods for detecting nighttime clouds using a digital camera without a NIR-cut filter", Proc. SPIE 11914, SPIE Future Sensing Technologies 2021, 119140R (14 November 2021); https://doi.org/10.1117/12.2604184

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