In recent years, integral imaging, a promising three-dimensional imaging technology, has attracted more and more attention for its broad applications in robotics, computational vision, and medical diagnostics. In the visible spectrum, an integral imaging system can be easily implemented by inserting a micro-lens array between a image formation optic and a pixelated detector. By using a micro-Fresnel Zone Plate (FZP) array instead of the refractive lens array, the integral imaging system can be applied in X-ray. Due to micro-scale dimensions of FZP in the array and current manufacturing techniques, the number of zones of FZP is limited. This may have an important impact on the FZP imaging performance. The paper introduces a simulation method based on the scalar diffraction theory. With the aid of this method, the effect of the number of zones on the FZP imaging performance is numerically investigated, especially the case of very small number of zones. Results of several simulation of FZP imaging are presented and show the image can be formed by a FZP with a number of zones as low as 5. The paper aims at offering a numerical approach in order to facilitate the design of FZP for integral imaging.

中文翻译：

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区数模拟菲涅耳波带片成像性能

近年来，积分成像是一种有前途的三维成像技术，因其在机器人技术，计算视觉和医学诊断中的广泛应用而受到越来越多的关注。在可见光谱中，可以通过在成像光学元件和像素化检测器之间插入微透镜阵列来轻松实现整体成像系统。通过使用微菲涅耳波带片（FZP）阵列而不是折射透镜阵列，可以将集成成像系统应用于X射线。由于阵列中FZP的微型尺寸和当前的制造技术，FZP的区域数量受到限制。这可能对FZP成像性能有重要影响。介绍了一种基于标量衍射理论的仿真方法。借助这种方法，数值研究了区域数量对FZP成像性能的影响，特别是在区域数量非常少的情况下。给出了几种FZP成像模拟的结果，并显示了可以由低至5个区域的FZP形成图像。本文旨在提供一种数值方法，以简化用于整体成像的FZP的设计。