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Algorithms for cloud segmentation with ground-based camera images

  • This paper deals with the detection and segmentation of clouds on high-dynamic-range (HDR) images of the sky as well as the calculation of the position of the sun at any time of the year. In order to predict the movement of clouds and the radiation of the sun for a short period of time, the clouds thickness and position have to be known as precisely as possible. Consequently, the segmentationThis paper deals with the detection and segmentation of clouds on high-dynamic-range (HDR) images of the sky as well as the calculation of the position of the sun at any time of the year. In order to predict the movement of clouds and the radiation of the sun for a short period of time, the clouds thickness and position have to be known as precisely as possible. Consequently, the segmentation algorithm has to provide satisfactory results regardless of different weather, illumination and climatic conditions. The principle of the segmentation is based on the classification of each pixel as a cloud or as a sky. This classification is usually based on threshold methods, since these are relatively fast to implement and show a low computational burden. In order to predict if and when the sun will be covered by clouds, the position of the sun on the images has to be determined. For this purpose, the zenith and azimuth angles of the sun are determined and converted into XY coordinates.‚Ķshow moreshow less

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Metadaten
Author:Stefan Hensel, Marin B. Marinov, Raphael Schwarz, Borislav Ganev
Creating Corporation:IEEE
Year of Publication:2018
Pagenumber:6
ISBN:978-1-5386-6730-9
Language:English
Parent Title (English):2018 Seventh Balkan Conference on Lighting (BalkanLight)
First Page:148
Last Page:153
Document Type:Conference Proceeding
Institutes:Hochschule Offenburg / Bibliografie
Acces Right:Zugriffsbeschränkt
Release Date:2019/01/10
Licence (German):License LogoEs gilt das UrhG
DOI:https://doi.org/10.1109/BalkanLight.2018.8546948