Quantitative X-ray radiographic imaging systems that utilize a charged couple device (CCD) camera connected to a thick, monolithic scintillator can exhibit blur that varies spatially across the field of view, especially for thick scintillators used in pulse-power radiography of dynamically compressed objects. A three-point approach to estimating and accounting for this effect is demonstrated by (a) using a local estimation technique to measure the effect of blurring a calibration object at key locations across the field of view, (b) combining each of the local estimates into a spatially varying blurring function via partitions of unity interpolation, and (c) resolving the effects of that blur on the image by solving an ill-posed inverse problem using a spatially varying regularization term. The technique is demonstrated on synthetic examples and actual radiographs collected at the Naval Research Laboratory's (NRL) Mercury pulsed power facility.

中文翻译：

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一种表征图像系统模糊空间方面的方法

使用连接到厚单片闪烁体的带电耦合器件 (CCD) 相机的定量 X 射线射线照相成像系统可能会表现出在视野范围内随空间变化的模糊，特别是对于用于动态压缩物体的脉冲功率射线照相的厚闪烁体. 估计和解释这种影响的三点方法如下所示：(a) 使用局部估计技术来测量在整个视场的关键位置模糊校准对象的影响，(b) 结合每个局部估计通过统一插值的分区转换为空间变化的模糊函数，以及 (c) 通过使用空间变化的正则化项解决不适定逆问题来解决该模糊对图像的影响。