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全天空摄像机的RAW曝光系列的HDR合并:围绕太阳辐射测量的比较研究

Paul Matteschk^1,2, Max Aragón^2,3, Jose Gomez^2,3

¹International Centre for Sustainable Development (IZNE), University of Applied Sciences Bonn-Rhein-Sieg, 53757 Sankt Augustin, Germany.

Journal of imaging

|December 24, 2025

概括

用于太阳能气象的全天图像仪 (ASIs) 的高动态范围 (HDR) 处理进行比较. 在传感器/RAW领域的辐射线性融合 (RAW-HDR) 比基于图像信号处理器 (ISP) 的HDR更好地保留环太阳细节.

科学领域:

太阳能气象学太阳能气象学
大气光学是大气光学.
图像处理图像处理

背景情况:

全天空成像仪 (ASIs) 在太阳能气象学中面临极端动态范围的挑战.
目前的运营管道经常使用基于图像信号处理器 (ISP) 的高动态范围 (HDR) 方法,这可能会降低靠近太阳的图像质量.

研究的目的:

在传感器/RAW领域 (RAW-HDR) 与供应商ISP-HDR (ISP-HDR) 基于HDR进行对比.
评估不同HDR方法对环太阳图像质量和下游太阳能应用的适用性的影响.

主要方法:

在明亮和破碎的云条件下配对,交错的图像采集.
基于太阳的几何校准用于以太阳为中心的分析.
使用和面积分数和辐射梯度指标在辐射线性HDR领域进行定量评估.

主要成果:

与RAW-HDR相比,ISP-HDR显示在太阳0-4°范围内近和度大约是RAW-HDR的两倍.
与RAW-HDR相比,ISP-HDR在0-6°范围内呈现出三到四倍弱的环太阳辐射梯度.
RAW-HDR更好地保存了环太阳结构.

结论:

在RAW域 (RAW-HDR) 中的辐射线性聚变优于ISP域的HDR,因为它保留了环太阳图像的细节.
在太阳能气象学中,RAW-HDR为关键下游任务提供了更合适的输入,例如云边缘检测,气溶检索和辐射估计.

关键词:

在 RAW 域中使用 HDR.全天空成像仪 (ASI)环太阳区域是一个环太阳区域.曝光系列 - 聚变的曝光系列高动态范围 (HDR) 的高动态范围.图像信号处理 (ISP) 是一个

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