Optical brush: Imaging through permuted probes
Name
Heshmat-2016-Optical Brush.pdf
Size
1.21 MB
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Adobe PDF
Checksum (MD5)
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Author(s)
Lee, Ik Hyun
Raskar, Ramesh
Heshmat Dehkordi, Barmak
Date Issued
February 2016
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Heshmat, Barmak, Ik Hyun Lee, and Ramesh Raskar. “Optical Brush: Imaging through Permuted Probes.” Scientific Reports 6 (February 12, 2016): 20217.
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1038/srep20217
