A method for rapid measurement of cloud base height from a pair of sky imagers

Cloud base height, a crucial spatial parameter of cloud clusters, plays a significant role in the field of photovoltaics and other domains. In order to obtain the cloud base height information of the whole sky, the cloud base height measurement technology based on binocular vision technology has bee...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2024-01, Vol.21, p.1-1
Main Authors: Zou, Lianglin, Song, Jifeng, Niu, Yisen, Yan, Zixuan, Lin, Xilong
Format: Article
Language:English
Subjects:
Binocular vision
Binocular Vision Technology
Cameras
Cloud Base Height
Cloud clusters
Cloud computing
Clouds
Clustering
Clustering algorithms
Computation
Feature extraction
Feature Points
Fluctuations
Height
Image segmentation
Matching
Measurement methods
Moon
Photovoltaic cells
Photovoltaics
Semi-Local Matching
Technology
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Summary:Cloud base height, a crucial spatial parameter of cloud clusters, plays a significant role in the field of photovoltaics and other domains. In order to obtain the cloud base height information of the whole sky, the cloud base height measurement technology based on binocular vision technology has been developed. However, the current global matching method yields a single value, while the computational efficiency of the local matching technique remains inadequate. This letter proposes a fast measurement method for determining cloud base height using a semi-local matching technique. First, the ground-based cloud image is segmented to reduce the calculation amount of cloud base height. Subsequently, the individual cloud blocks are divided into clusters through clustering. Finally, matching points are identified for each individual cloud section using feature detection and matching, allowing for the computation of the cloud base height at multiple feature points within each cloud section. The experimental results, based on ceilometer as a reference, show that the proposed method has better performance than the existing methods.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2024.3369670