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首页> 外文会议>Remote Sensing for Environmental Monitoring, GIS Applications, and Geology VII; Proceedings of SPIE-The International Society for Optical Engineering; vol.6749 >Evaluation of a hyperspectral scanner allowing for deterioration status assessment of asbestos-cement roofing sheets
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Evaluation of a hyperspectral scanner allowing for deterioration status assessment of asbestos-cement roofing sheets

机译：评估高光谱扫描仪，以评​​估石棉水泥屋顶板的劣化状态

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摘要

Aim of this study is the identification of the hyperspectral scanner operational characteristics allowing for asbestos cement (AC) roofing sheets deterioration status assessment that is related to the asbestos fibers abundance. At this purpose we made laboratory measurements on AC samples with different deterioration status collected in two industrial areas in Italy. The asbestos occurrence in the AC samples was recognized using XRD and FTIR instruments and the abundance of surfacing asbestos fibers was performed by using a high resolution scanner (SEM). The samples optical characteristics and the directional effects that can affect the AC samples were analyzed using a portable field spectrometer (ASD). The results of the ASD measurements (i.e. band-depth ratio of the continuum removed calculated for the asbestos diagnostic band at 2.32 μm) were related to the relative percentage of surfacing asbestos fibers (i.e. the AC deterioration status). Since laboratory measurements confirmed that optical measurements are sensitive to variations in asbestos fiber abundance, detection limit analysis was used for defining the requirements (signal-to-noise ratio, band FWHM, and sampling range) of an optimal hyperspectral sensor most suitable for detecting the diagnostic asbestos absorption features.
机译：这项研究的目的是识别高光谱扫描仪的工作特性，以便对石棉水泥（AC）屋面板材的劣化状态进行评估，该评估与石棉纤维的丰度有关。为此，我们对在意大利两个工业区收集的具有不同劣化状态的交流样品进行了实验室测量。使用XRD和FTIR仪器可以识别出AC样品中的石棉，而使用高分辨率扫描仪（SEM）可以测量表面石棉纤维的含量。使用便携式现场光谱仪（ASD）分析了样品的光学特性和可能影响AC样品的方向效应。 ASD测量的结果（即为2.32μm的石棉诊断带计算的去除的连续体的带深比）与堆放石棉纤维的相对百分比（即AC劣化状态）相关。由于实验室测量证实光学测量对石棉纤维丰度的变化敏感，因此使用检测限分析来定义最适合检测石棉纤维的最佳高光谱传感器的要求（信噪比，带宽FWHM和采样范围）。诊断石棉的吸收功能。

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