One step geometrical calibration method for optical coherence tomography
One step geometrical calibration method for optical coherence tomography
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DOI：
10.1088/2040-8978/18/1/015301
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发表时间：
2016-01-01
影响因子：
2.1
通讯作者：
Roth, Bernhard
中科院分区：
文献类型：
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作者：
Diaz, Jesus Diaz;Stritzel, Jenny;Roth, Bernhard
我们提出了一种新颖的一步校准方法，用于光学相干断层扫描（OCT）的几何畸变校正。介绍了一种专门为OCT设计的校准标准，它由一系列倒金字塔结构组成。使用位于金字塔上四个不同高度的多个地标可以执行 3D 几何校准。校准过程本身基于 OCT 光束传播的参数模型。它经过实验结果验证，能够将系统误差减少一个数量级以上。未来，我们的结果可以改进 OCT 图像重建和解释，用于医疗应用，例如手术的实时监控。
We present a novel one-step calibration methodology for geometrical distortion correction for optical coherence tomography (OCT). A calibration standard especially designed for OCT is introduced, which consists of an array of inverse pyramidal structures. The use of multiple landmarks situated on four different height levels on the pyramids allow performing a 3D geometrical calibration. The calibration procedure itself is based on a parametric model of the OCT beam propagation. It is validated by experimental results and enables the reduction of systematic errors by more than one order of magnitude. In future, our results can improve OCT image reconstruction and interpretation for medical applications such as real time monitoring of surgery.