Real-time photon beam localization methods using high-resolution imagers and parallel processing using a reconfigurable system

Real-time photon beam localization methods using high-resolution imagers and parallel processing using a reconfigurable system
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使用高分辨率成像器的实时光子束定位方法和使用可重构系统的并行处理

DOI:
10.1117/1.3158957
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发表时间:
2009
影响因子:
1.3
通讯作者:
Scott P
Scott P
中科院分区:
工程技术4区
文献类型:
--
作者:
Scott P

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我们报告的高精度,实时光子束定位和表征仪器。该设备使用耦合到硬件图像处理系统的2-D(图像)传感器。该系统使用两种不同的算法,这两种算法都使用来自单个有源像素阵列传感器的数据在现场可编程门阵列逻辑上并行运行。第一种算法模仿普遍存在的象限光电二极管设计,具有高精度,但范围有限,需要校准周期。第二种算法计算重心的位置。我们通过测量光束的位移来比较这两种方法的优点。结果表明,重心法具有动态范围大、线性度好的优点。通过对这些实验中捕获的相同图像数据进行操作的方法,我们的目的是研究这两种算法并比较它们的性能。
We report on a high-precision, real-time photon beam localization and characterization instrument. The device uses a 2-D (image) sensor coupled to a hardware image processing system. The system uses two different algorithms that both run in parallel on field programmable gate array logic using data from a single active pixel array sensor. The first algorithm mimics the ubiquitous quadrant photodiode design that features high precision but has limited range and requires calibration cycles. The second algorithm calculates the location of the center of gravity. We compare the merits of both methods by measuring the displacement of a light beam. It is shown that the center of gravity (or centroid) method offers the advantage of large dynamic range with excellent linearity. By the method of operating on identical image data captured from these experiments, we aim to investigate both algorithms and compare their performance.
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发表时间: 2007-03
影响因子: 3.2
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