A Modified Detectability Criterion for Conventional Radiography Simulation
A Modified Detectability Criterion for Conventional Radiography Simulation
复制标题
传统放射线照相仿真的修正可检测性准则
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
A. Schumm
中科院分区：
文献类型：
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作者：
D. Tisseur;C. Vienne;P. Guérin;Angéla Peterzol;V. Kaftandjian;P. Duvauchelle;A. Schumm
对于传统的射线照相技术，X/伽马射线胶片的解释是基于人眼的感知。对于模拟射线照相，没有“通用”的缺陷可见性/可检测性和IQIs标准。然而，对于给定设置的自动分析研究，至少需要一个可检测性标准。Rose准则是目前的参考可检测性测量方法，它基于归一化到空间图像分辨率的成像缺陷的对比度噪声比。根据定义，它很好地适用于大致圆形缺陷（例如平底孔或阶梯孔IQIs）的情况，但对于细长形状的裂纹或接近空间分辨率极限的裂纹以及线IQIs显示出其局限性。在本文中，我们提出了一种修改的可检测性标准，以考虑缺陷形状的变化性。本文显示了人类的专业知识和这个新的标准之间的性能比较，使用一个大型的缺陷数据库和IQIs与相关的运营商的评价，在以前的工作。
For the conventional radiographic technique, X/gamma ray film interpretation is based on human eye perception. There is no criterion of "universal" visibility / detectability of flaws and IQIs for simulated radiography. However, at least one detectability criterion is required for an automatic analysis study of a given set-up. The Rose criterion, based on the contrast to noise ratio of the imaged flaw normalized to the spatial image resolution, is the current reference detectability measure. It is by definition well-adapted in the case of roughly circular flaws (e.g. flat bottom holes or step hole IQIs) but shows its limits for cracks with an elongated shape or close to the limit of spatial resolution as well as for wire IQIs. In this paper, we propose a modified detectability criterion to take into account the variability of flaw shape. This paper shows a performance comparison between human expertise and this new criterion, using a large flaw database and IQIs with associated operator evaluations developed in a prior work.