Applying Fisheye and Dual-Fisheye Camera in Rain Gauge Exposure Estimation
Journal
45th Asian Conference on Remote Sensing, ACRS 2024
Series/Report No.
45th Asian Conference on Remote Sensing, ACRS 2024
Part Of
45th Asian Conference on Remote Sensing, ACRS 2024
Date Issued
2024-11-17
Author(s)
Peng M.Y.
Abstract
A weather station should accurately represent the characteristics of its surrounding environment. To assess a weather station's suitability, it is essential to consider the spatial range that the meteorological instruments can cover, typically reflected by the exposure, which indicates the openness of the location. Before installing a rain gauge, it is necessary to assess the environmental exposure, as excessive obstruction can lead to inaccurate rainfall measurements. An omnidirectional camera is a camera with a 360-degree field of view in the horizontal plane, or with a visual field that covers a hemisphere or approximately the entire sphere. Using a camera with a wide-angle effect can quickly gather environmental information, making it an ideal tool for estimating the exposure of rain gauges. The image-based approach offers benefits such as low cost and simplified fieldwork as well. For estimating the exposure of rain gauges, this study employs a professional fisheye lens to provide rigorous and flexible methods and uses a dual fisheye camera to offer an adaptable method. The results demonstrate the suitability of these camera tools.
Event(s)
45th Asian Conference on Remote Sensing, ACRS 2024, Colombo,17 November 2024 through 21 November 2024. Code 206406
Subjects
Dual-fisheye camera
Fisheye lens
Image-based analysis
Rain gauge exposure
Type
conference paper