论文标题
快速的层析成像检查圆柱体对象
Fast tomographic inspection of cylindrical objects
论文作者
论文摘要
本文提出了一种使用X射线计算机断层扫描（CT）改进对象分析对象的方法。圆柱形坐标围绕固定在物体上的轴形成最自然的基础，以检查包含这种对称性的物体的某些特征，因为工业部位经常发生。采样网格与对象相对应，从而减小了采样，从而减少了重建时间。这对于在线应用和快速质量检查是必不可少的。通过代数重建，它允许使用预计的初始音量，非常适合适合一系列扫描，在该扫描中，相同型对象可以具有不同的位置和方向，就像在工业环境中经常遇到一样。当某些区域更有可能更改以提高稳定性时，也可以包括加权反射。基于笛卡尔电网重建代码的建立，重复使用现有的射线追踪器的可行性应针对同一领域的其他研究进行检查。
This paper presents a method for improved analysis of objects with an axial symmetry using X-ray Computed Tomography (CT). Cylindrical coordinates about an axis fixed to the object form the most natural base to check certain characteristics of objects that contain such symmetry, as often occurs with industrial parts. The sampling grid corresponds with the object, allowing for down-sampling hence reducing the reconstruction time. This is necessary for in-line applications and fast quality inspection. With algebraic reconstruction it permits the use of a pre-computed initial volume perfectly suited to fit a series of scans where same-type objects can have different positions and orientations, as often encountered in an industrial setting. Weighted back-projection can also be included when some regions are more likely subject to change, to improve stability. Building on a Cartesian grid reconstruction code, the feasibility of reusing the existing ray-tracers is checked against other researches in the same field.
