Single-shot coherent power-spectrum imaging of objects hidden by opaque scattering media

2019 ◽  
Vol 58 (4) ◽  
pp. 1033 ◽  
Author(s):  
Wusheng Tang ◽  
Jiankun Yang ◽  
Wenjun Yi ◽  
Qianwen Nie ◽  
Jubo Zhu ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Single Shot ◽  
Scattering Media ◽  
Spectrum Imaging

scholarly journals Optimizing Single-Shot Coherent Power-Spectrum Scattering Imaging Adaptively by Tuning Feedback Coefficient for Practical Exposure Conditions

2019 ◽  
Vol 9 (18) ◽  
pp. 3676
Author(s):  
Wei Wang ◽  
Yanfang Guo ◽  
Wusheng Tang ◽  
Wenjun Yi ◽  
Mengzhu Li ◽  
...  
Keyword(s):  
Power Spectrum ◽  
Real Time ◽  
Exposure Level ◽  
Single Shot ◽  
Scattering Media ◽  
Diffractive Imaging ◽  
Driving Assistance ◽  
Spectrum Imaging ◽  
Feedback Coefficient ◽  
Exposure Conditions

With only one piece of the power-spectrum pattern, the single-shot coherent power-spectrum imaging can provide a clear object image for real-time applications even if the object is hidden by opaque scattering media, in which the feedback coefficient β value for the reconstruction with least retrievals and fastest speed has to be pre-estimated through time-consuming iterative loops. Here we report a method for estimating the optimal β value from the captured raw power-spectrum images adaptively to optimize the single-shot coherent power-spectrum imaging for practical exposure conditions. The results demonstrate that, based on exposure level analysis of the captured raw power-spectrum images even of underexposure, moderate exposure, and overexposure cases, the β value could be quickly determined with a compact expression for the algorithm to achieve clear reconstruction output efficiently. The proposed method helps to push ahead of the coherent diffractive imaging devices for real-time imaging through turbid mediums in Artificial Intelligence (AI), driving assistance, and flight assistance applications.

scholarly journals High-speed single-shot optical focusing through dynamic scattering media with full-phase wavefront shaping

2017 ◽  
Vol 111 (22) ◽  
pp. 221109 ◽  
Author(s):  
Ashton S. Hemphill ◽  
Yuecheng Shen ◽  
Yan Liu ◽  
Lihong V. Wang
Keyword(s):  
High Speed ◽  
Single Shot ◽  
Scattering Media ◽  
Wavefront Shaping ◽  
Optical Focusing ◽  
Dynamic Scattering

Single-shot, two-dimensional ballistic imaging through scattering media

2004 ◽  
Vol 43 (26) ◽  
pp. 5100 ◽  
Author(s):  
Megan Paciaroni ◽  
Mark Linne
Keyword(s):  
Single Shot ◽  
Two Dimensional ◽  
Scattering Media ◽  
Ballistic Imaging

scholarly journals Single-shot large field of view imaging with scattering media by spatial demultiplexing

2018 ◽  
Vol 57 (26) ◽  
pp. 7533 ◽  
Author(s):  
Dongliang Tang ◽  
Sujit Kumar Sahoo ◽  
Vinh Tran ◽  
Cuong Dang
Keyword(s):  
Field Of View ◽  
Large Field ◽  
Single Shot ◽  
Scattering Media

scholarly journals Speckle rotation decorrelation based single-shot video through scattering media

2019 ◽  
Vol 27 (10) ◽  
pp. 14567 ◽  
Author(s):  
Yaoyao Shi ◽  
Youwen Liu ◽  
Wei Sheng ◽  
Jiming Wang ◽  
Tong Wu
Keyword(s):  
Single Shot ◽  
Scattering Media

scholarly journals Single-shot noninvasive three-dimensional imaging through scattering media

2019 ◽  
Vol 44 (16) ◽  
pp. 4032 ◽  
Author(s):  
Ryoichi Horisaki ◽  
Yuka Okamoto ◽  
Jun Tanida
Keyword(s):  
Three Dimensional ◽  
Single Shot ◽  
Scattering Media ◽  
Three Dimensional Imaging

scholarly journals Real-time frequency-encoded spatiotemporal focusing through scattering media using a programmable 2D ultrafine optical frequency comb

2020 ◽  
Vol 6 (8) ◽  
pp. eaay1192 ◽  
Author(s):  
Xiaoming Wei ◽  
Yuecheng Shen ◽  
Joseph C. Jing ◽  
Ashton S. Hemphill ◽  
Changsheng Yang ◽  
...  
Keyword(s):  
Real Time ◽  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Single Shot ◽  
Scattering Media ◽  
Wave Source ◽  
Time Frequency ◽  
Temporal Focusing ◽  
Wavefront Shaping

Optical wavefront shaping is a powerful tool for controlling photons in strongly scattering media. Its speed, however, has been the bottleneck for in vivo applications. Moreover, unlike spatial focusing, temporal focusing from a continuous-wave source has rarely been exploited yet is highly desired for nonlinear photonics. Here, we present a novel real-time frequency-encoded spatiotemporal (FEST) focusing technology. FEST focusing uses a novel programmable two-dimensional optical frequency comb with an ultrafine linewidth to perform single-shot wavefront measurements, with a fast single-pixel detector. This technique enables simultaneous spatial and temporal focusing at microsecond scales through thick dynamic scattering media. This technology also enabled us to discover the large-scale temporal shift, a new phenomenon that, with the conventional spatial memory effect, establishes a space-time duality. FEST focusing opens a new avenue for high-speed wavefront shaping in the field of photonics.

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