A Priori Information Based Time-Resolved 3D Analysis of the Trajectory and Spatial Orientation of Fast-Moving Objects Using High-Speed Flash X-ray Imaging

被引：1

作者：

Langkemper, Ralph ^{[1
]}

Moser, Stefan ^{[1
]}

Buettner, Markus ^{[1
]}

Rakus, Dominik ^{[1
]}

Saettler, Axel ^{[1
]}

Nau, Siegfried ^{[1
]}

机构：

[1] EMI, Fraunhofer Inst High Speed Dynam, Ernst Mach Inst, Ernst Zermelo Str 4, D-79104 Freiburg, Germany

来源：

JOURNAL OF IMAGING | 2022年 / 8卷 / 02期

关键词：

2D to 3D registration; high-speed X-ray imaging; fast-moving object; sabot discard; a priori information; REGISTRATION; CT; RECONSTRUCTION; ACCURACY; MR;

D O I：

10.3390/jimaging8020028

中图分类号：

TB8 [摄影技术];

学科分类号：

0804 ;

摘要：

This paper shows that the X-ray analysis method known from the medical field, using a priori information, can provide a lot more information than the common analysis for high-speed experiments. Via spatial registration of known 3D shapes with the help of 2D X-ray images, it is possible to derive the spatial position and orientation of the examined parts. The method was demonstrated on the example of the sabot discard of a subcaliber projectile. The velocity of the examined object amounts up to 1600 m/s. As a priori information, the geometry of the experimental setup and the shape of the projectile and sabot parts were used. The setup includes four different positions or points in time to examine the behavior over time. It was possible to place the parts within a spatial accuracy of 0.85 mm (standard deviation), respectively 1.7 mm for 95% of the errors within this range. The error is mainly influenced by the accuracy of the experimental setup and the tagging of the feature points on the X-ray images.

引用

页数：11