Fast Computational Ghost Imaging with Laser Array Modulation
Fast Computational Ghost Imaging with Laser Array Modulation
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DOI：
10.3390/app9224807
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发表时间：
2019-11
期刊：
影响因子：
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通讯作者：
K. Nitta;Yuki Yano;C. Kitada;O. Matoba
中科院分区：
文献类型：
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作者：
K. Nitta;Yuki Yano;C. Kitada;O. Matoba
计算重影成像（CGI）是光学测量中的几种有吸引力的技术之一，因为它可以在不使用图像传感器的情况下确定目标物体的二维结构。然而，常规CGI在测量时间方面不适合于实际使用。在本文中，我们报告减少CGI中的光学测量时间，并提出了一种新的CGI实现。所提出的方法利用了激光二极管的宽带宽。通过改变发射模式，我们可以在显著更短的时间内获得计算鬼像成像所需的一组散斑图案。因此，该方法适用于高速测量。文中描述了该方法的概念，并通过数值分析进行了验证。此外，组装了用于实验验证的光学装置。实验和信号处理结果表明，该方法能够提供目标的重建图像。
Computational ghost imaging (CGI) is one of several attractive techniques for optical measurement because it can determine two-dimensional structures of target objects without using an image sensor. However, conventional CGI is not suitable for practical use in terms of measurement time. In this paper, we report on reducing the optical measurement time in CGI and propose a new CGI implementation. The proposed method utilizes the wide bandwidth of laser diodes. We can obtain a set of speckle patterns required in computational ghost imaging in a significantly shorter time by changing emission patterns. Consequently, this method is suitable for high-speed measurements. The concept of the method is described and verified by numerical analysis. Further, optical setup for the experimental verification is assembled. As verified with experiments and signal processing, the proposed method can provide reconstructed images of targets.