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Knowing the behavior of solar radiation at a geographic location is essential for the use of energy from the sun using photovoltaic systems; however, the number of stations for measuring meteorological parameters and for determining the…

Machine Learning · Computer Science 2022-04-13 Luis Eduardo Ordoñez Palacios , Víctor Bucheli Guerrero , Hugo Ordoñez

Satellite-based solar irradiation forecasting is useful for short-term intra-day time horizons, outperforming numerical weather predictions up to 3-4 hours ahead. The main techniques for solar satellite forecast are based on sophisticated…

Atmospheric and Oceanic Physics · Physics 2020-09-02 Franco Marchesoni-Acland , Rodrigo Alonso Suárez

Fine-scale short-term cloud motion prediction is needed for several applications, including solar energy generation and satellite communications. In tropical regions such as Singapore, clouds are mostly formed by convection; they are very…

Computer Vision and Pattern Recognition · Computer Science 2016-10-24 Soumyabrata Dev , Florian M. Savoy , Yee Hui Lee , Stefan Winkler

The occlusion of the sun by clouds is one of the primary sources of uncertainties in solar power generation, and is a factor that affects the wide-spread use of solar power as a primary energy source. Real-time forecasting of cloud movement…

Computer Vision and Pattern Recognition · Computer Science 2024-09-19 Leron Julian , Haejoon Lee , Soummya Kar , Aswin C. Sankaranarayanan

NASA's Interface Region Imaging Spectrograph (IRIS) provides high resolution observations of the solar atmosphere through UV spectroscopy and imaging. Since the launch of IRIS in June 2013, we have conducted systematic observation campaigns…

Sky/cloud imaging using ground-based Whole Sky Imagers (WSI) is a cost-effective means to understanding cloud cover and weather patterns. The accurate segmentation of clouds in these images is a challenging task, as clouds do not possess…

Computer Vision and Pattern Recognition · Computer Science 2017-01-18 Soumyabrata Dev , Yee Hui Lee , Stefan Winkler

Accurate surface solar irradiance (SSI) forecasting is essential for optimizing renewable energy systems, particularly in the context of long-term energy planning on a global scale. This paper presents a pioneering approach to solar…

Atmospheric and Oceanic Physics · Physics 2024-11-14 Alberto Carpentieri , Jussi Leinonen , Jeff Adie , Boris Bonev , Doris Folini , Farah Hariri

Amongst all the renewable energy resources (RES), solar is the most popular form of energy source and is of particular interest for its widely integration into the power grid. However, due to the intermittent nature of solar source, it is…

Computer Vision and Pattern Recognition · Computer Science 2021-05-10 Ekanki Sharma , Wilfried Elmenreich

Sky imaging systems use lenses to acquire images concentrating light beams in a sensor. The light beams received by the sky imager have an elevation angle with respect to the device normal. Thus, the pixels in the image contain information…

Instrumentation and Methods for Astrophysics · Physics 2022-03-01 Guillermo Terrén-Serrano , Manel Martínez-Ramón

In this paper, we present a method to determine the global horizontal irradiance (GHI) from the power measurements of one or more PV systems, located in the same neighborhood. The method is completely unsupervised and is based on a physical…

Machine Learning · Statistics 2018-02-23 Lorenzo Nespoli , Vasco Medici

The estimation of total solar irradiance falling on the earth's surface is important in the field of solar energy generation and forecasting. Several clear-sky solar radiation models have been developed over the last few decades. Most of…

Atmospheric and Oceanic Physics · Physics 2017-08-30 Soumyabrata Dev , Shilpa Manandhar , Yee Hui Lee , Stefan Winkler

Recent advances in Computer Vision and Deep Learning have enabled astonishing results in a variety of fields and applications. Motivated by this success, the SkyCam Dataset aims to enable image-based Deep Learning solutions for short-term,…

Computer Vision and Pattern Recognition · Computer Science 2021-05-10 Evangelos Ntavelis , Jan Remund , Philipp Schmid

Reliable and exact assessment of visibility is essential for safe air traffic. In order to overcome the drawbacks of the currently subjective reports from human observers, we present an approach to automatically derive visibility measures…

Computer Vision and Pattern Recognition · Computer Science 2015-05-21 Jean-Philippe Andreu , Stefan Mayer , Karlheinz Gutjahr , Harald Ganster

Global horizontal irradiance (GHI) plays a significant role in maintaining the earth's ecological balance and generating electricity in photovoltaic systems. While the satellites have more range, they have been shown to over/under-estimate…

Signal Processing · Electrical Eng. & Systems 2022-06-16 Mayank Jain , Deepak Joel Yericherla , Soumyabrata Dev

Ahead-of-time forecasting of incident solar-irradiance on a panel is indicative of expected energy yield and is essential for efficient grid distribution and planning. Traditionally, these forecasts are based on meteorological physics…

Computer Vision and Pattern Recognition · Computer Science 2019-01-16 Talha A. Siddiqui , Samarth Bharadwaj , Shivkumar Kalyanaraman

In this paper we study the problem of estimating snow cover in mountainous regions, that is, the spatial extent of the earth surface covered by snow. We argue that publicly available visual content, in the form of user generated photographs…

Multimedia · Computer Science 2016-11-17 Roman Fedorov , Alessandro Camerada , Piero Fraternali , Marco Tagliasacchi

Image quality assessment is critical to control and maintain the perceived quality of visual content. Both subjective and objective evaluations can be utilised, however, subjective image quality assessment is currently considered the most…

Image and Video Processing · Electrical Eng. & Systems 2019-12-17 Lucie Lévêque , Soumyabrata Dev , Murhaf Hossari , Yee Hui Lee , Stefan Winkler

Solar infrared colors provide powerful constraints on the stellar effective temperature scale, but to this purpose they must be measured with both accuracy and precision. We achieve this requirement by using line-depth ratios to derive in a…

Solar and Stellar Astrophysics · Physics 2012-11-29 L. Casagrande , I. Ramirez , J. Melendez , M. Asplund

Solar panels are increasingly deployed in cities on rooftops, walls, and urban infrastructure. Although the panel costs have fallen in recent years, the soft costs of installing them have not. These soft costs include assessing the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Jeremy Klotz , Shree K. Nayar

Clouds play a significant role in the fluctuation of solar radiation received by the earth's surface. It is important to study the various cloud properties, as it impacts the total solar irradiance falling on the earth's surface. One of…

Computer Vision and Pattern Recognition · Computer Science 2017-08-31 Shilpa Manandhar , Soumyabrata Dev , Yee Hui Lee , Yu Song Meng