Confidence map tool for gradient-based X-ray phase contrast imaging.
Confidence map tool for gradient-based X-ray phase contrast imaging.
复制标题
用于基于梯度的 X 射线相衬成像的置信图工具。
DOI：
10.1364/oe.438876
复制
发表时间：
2021
期刊：
影响因子：
3.8
通讯作者：
D. Tisseur
中科院分区：
文献类型：
--
作者：
A. Stolidi;G. Giakoumakis;J. Primot;A. Jarnac;D. Tisseur
我们提供了一个图形工具，我们称之为“置信度图”。它允许局部地评估从其梯度测量中恢复的相位图像的质量。该工具主要用于提醒观察者注意可能影响其对图像的解释的伪像的存在。它还可以用于优化相位成像器，因为它将每个伪像的产生关联到一个原因：错位、采样不足和噪声。以微聚焦X射线管为例，介绍了置信度图工具的使用方法，该方法采用了多边剪切干涉技术，这是一种基于梯度的相位对比技术，采用了单一的2D栅格。
We present a graphical tool that we call a "confidence map". It allows to evaluate locally the quality of a phase image retrieved from the measurement of its gradients. The tool is primarily used to alert the observer to the presence of artifacts that could affect his interpretation of the image. It can also be used to optimize a phase imager since it associates a cause with the creation of each artifact: dislocation, under-sampling and noise. An illustration of the use of the confidence map tool is presented, based on a microfocus X-ray tube using multilateral shearing interferometry, a gradient based phase contrast technique employing a single 2D-grating.