Optical brush: Imaging through permuted probes.
Optical brush: Imaging through permuted probes.
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DOI：
10.1038/srep20217
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发表时间：
2016-02-12
影响因子：
4.6
通讯作者：
Raskar R
中科院分区：
文献类型：
--
作者：
Heshmat B;Lee IH;Raskar R
计算技术和超快成像的结合已经使得能够通过非常规设置（诸如拐角周围）和通过扩散介质进行感测。我们利用飞行时间（ToF）的测量，使一个灵活的接口，通过排列一组光纤成像。纤维随机分布在场景中，并堆积在相机端，从而形成刷状结构。场景由两个离轴光脉冲照明。使用场景中纤维尖端的时间签名来定位每个纤维。最后，通过结合每个光纤的位置和测量强度，重建原始输入。与传统的光纤束与包装组的光纤，是有限的一个狭窄的视场（FOV），缺乏灵活性，和扩展的同轴预校准，所提出的光学刷是灵活的，并使用基于ToF的离轴校准方法。启用的画笔形式可以耦合到其他类型的ToF成像系统。这可能会影响基于探头的应用，例如内窥镜检查、断层扫描以及工业成像和传感。
The combination of computational techniques and ultrafast imaging have enabled sensing through unconventional settings such as around corners, and through diffusive media. We exploit time of flight (ToF) measurements to enable a flexible interface for imaging through permuted set of fibers. The fibers are randomly distributed in the scene and are packed on the camera end, thus making a brush-like structure. The scene is illuminated by two off-axis optical pulses. Temporal signatures of fiber tips in the scene are used to localize each fiber. Finally, by combining the position and measured intensity of each fiber, the original input is reconstructed. Unlike conventional fiber bundles with packed set of fibers that are limited by a narrow field of view (FOV), lack of flexibility, and extended coaxial precalibration, the proposed optical brush is flexible and uses off-axis calibration method based on ToF. The enabled brush form can couple to other types of ToF imaging systems. This can impact probe-based applications such as, endoscopy, tomography, and industrial imaging and sensing.