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首页> 外文期刊>Romanian journal of physics >Analytical Approaches to Study the Differences Occurring in the Digital RGB Images Captured through Gamma-Ray Irradiated Optical Windows
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Analytical Approaches to Study the Differences Occurring in the Digital RGB Images Captured through Gamma-Ray Irradiated Optical Windows

机译：研究通过伽玛射线照射的光学窗口捕获的数字RGB图像中出现的差异的分析方法

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Article no. 303: PDF | Abstract When exposed to ionizing radiation fields, the optical windows are affected by the energy deposition, their transparency starting to be affected. The main goal of the present paper is to find different analytical methods to study and highlight these transparency changes. To fulfill the proposed goal, several optical windows were exposed to gamma-rays in order to obtain different absorbed dose values. The exposed samples were placed in front of a color standard, and, high quality pictures of them were taken. The digital images were decomposed in their individual color components (3-Dimensional RGB color space model) and their associated RGB histograms were obtained. The histograms were compared and evaluated for each pair of irradiated/unirradiated optical windows, by using several analytical approaches. Higher relative differences were observed as a function of the increased absorbed dose value (“browning effect” magnitude). A quasi-linear dependence was observed up to a value of 1300 Gy, regardless of the used analytical approach, which indicates that this method can also be used for “unknown” absorbed gamma-ray dose estimations. The quasi-linearity region can be extended by using optical windows having different thicknesses, considering the fact that the absorption coefficient is given in mm-1 units.
机译：货号303：PDF |摘要当暴露在电离辐射场中时，光学窗口会受到能量沉积的影响，其透明度开始受到影响。本文的主要目的是找到不同的分析方法来研究和强调这些透明度的变化。为了实现所提出的目标，将几个光学窗口暴露于伽马射线，以获得不同的吸收剂量值。将曝光后的样品放置在颜色标准的前面，并拍摄高质量的照片。将数字图像分解为各自的颜色分量（三维RGB颜色空间模型），并获得其关联的RGB直方图。通过使用几种分析方法，比较并评估了每对照射/未照射光学窗口的直方图。观察到较高的相对差异是吸收剂量值增加的函数（“褐变效应”幅度）。无论使用何种分析方法，都观察到准线性相关性，直到1300 Gy值，这表明该方法也可用于“未知”吸收的伽马射线剂量估算。考虑到吸收系数以mm-1为单位的事实，可以通过使用具有不同厚度的光学窗来扩展准线性区域。

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