Single photon counting 3D imaging implemented under signal-to-noise ratio less than one

2019 ◽  
Author(s):  
Yan Kang ◽  
Tongyi Zhang ◽  
Lifei Li ◽  
Biao Wang ◽  
Wei Zhao
Keyword(s):  
3D Imaging ◽  
Single Photon ◽  
Signal To Noise Ratio ◽  
Photon Counting ◽  
Signal To Noise ◽  
Single Photon Counting ◽  
Noise Ratio

scholarly journals Three-Dimensional Imaging via Time-Correlated Single-Photon Counting

2020 ◽  
Vol 10 (6) ◽  
pp. 1930
Author(s):  
Chengkun Fu ◽  
Huaibin Zheng ◽  
Gao Wang ◽  
Yu Zhou ◽  
Hui Chen ◽  
...  
Keyword(s):  
3D Imaging ◽  
Single Photon ◽  
Signal To Noise Ratio ◽  
Photon Counting ◽  
Three Dimensional ◽  
Similarity Index ◽  
Signal To Noise ◽  
Single Photon Counting ◽  
Imaging Results ◽  
Noise Ratio

Three-dimensional (3D) imaging under the condition of weak light and low signal-to-noise ratio is a challenging task. In this paper, a 3D imaging scheme based on time-correlated single-photon counting technology is proposed and demonstrated. The 3D imaging scheme, which is composed of a pulsed laser, a scanning mirror, single-photon detectors, and a time-correlated single-photon counting module, employs time-correlated single-photon counting technology for 3D LiDAR (Light Detection and Ranging). Aided by the range-gated technology, experiments show that the proposed scheme can image the object when the signal-to-noise ratio is decreased to −13 dB and improve the structural similarity index of imaging results by 10 times. Then we prove the proposed scheme can image the object in three dimensions with a lateral imaging resolution of 512 × 512 and an axial resolution of 4.2 mm in 6.7 s. At last, a high-resolution 3D reconstruction of an object is also achieved by using the photometric stereo algorithm.

Single Photon Counting Discrimination Voltage Software

2017 ◽  
Vol 872 ◽  
pp. 354-359
Author(s):  
Long Hu Deng ◽  
Wei Feng Liu ◽  
Yi Jia Lu ◽  
Jia Cheng
Keyword(s):  
Single Photon ◽  
Selection Process ◽  
Signal To Noise Ratio ◽  
Photon Counting ◽  
High Signal ◽  
Signal To Noise ◽  
Single Photon Counting ◽  
Counting Technique ◽  
Noise Ratio ◽  
Analysis System

Because the output signals of photon detectors are scattered under weak light, the single photon counting method uses pulse discrimination technique and digital counting technique to identify and count weak signals. Compared with analog recording technique, the single photon counting technique has the advantages of high signal-to-noise ratio and good anti drift performance. Discrimination voltage is an important part of single photon counting, which will greatly affect the signal to noise ratio (SNR). The selected process of discrimination voltage is very complicated, especially the number of photomultiplier tube spectral analysis system [1], discrimination voltage selection process more time-consuming. This paper presents a software for automatically searching voltage discrimination. The software can automatically measure the discrimination voltage of a plurality of photomultiplier tubes, greatly improve the efficiency and accuracy of screening voltage selection, and verify the effectiveness of the screening voltage software by calculating the signal-to-noise ratio.

scholarly journals Quantum image distillation

2019 ◽  
Vol 5 (10) ◽  
pp. eaax0307 ◽  
Author(s):  
Hugo Defienne ◽  
Matthew Reichert ◽  
Jason W. Fleischer ◽  
Daniele Faccio
Keyword(s):  
Single Photon ◽  
Signal To Noise Ratio ◽  
Photon Counting ◽  
Measured Data ◽  
Quantum States ◽  
Signal To Noise ◽  
Quantum Imaging ◽  
Intensity Correlation ◽  
Quantum Image ◽  
Single Photon Counting

Imaging with quantum states of light promises advantages over classical approaches in terms of resolution, signal-to-noise ratio, and sensitivity. However, quantum detectors are particularly sensitive sources of classical noise that can reduce or cancel any quantum advantage in the final result. Without operating in the single-photon counting regime, we experimentally demonstrate distillation of a quantum image from measured data composed of a superposition of both quantum and classical light. We measure the image of an object formed under quantum illumination (correlated photons) that is mixed with another image produced by classical light (uncorrelated photons) with the same spectrum and polarization, and we demonstrate near-perfect separation of the two superimposed images by intensity correlation measurements. This work provides a method to mix and distinguish information carried by quantum and classical light, which may be useful for quantum imaging, communications, and security.

3D imaging and ranging by time-correlated single photon counting

2001 ◽  
Vol 12 (4) ◽  
pp. 157-168 ◽  
Author(s):  
A.M. Wallace ◽  
A.C. Walker ◽  
G.S. Buller
Keyword(s):  
3D Imaging ◽  
Single Photon ◽  
Photon Counting ◽  
Single Photon Counting

Coincidence Photon-Counting Laser Ranging for Moving Targets With High Signal-to-Noise Ratio

2014 ◽  
Vol 26 (15) ◽  
pp. 1495-1498 ◽  
Author(s):  
Zeyu Bao ◽  
Zhaohui Li ◽  
Yafan Shi ◽  
E. Wu ◽  
Guang Wu ◽  
...  
Keyword(s):  
Signal To Noise Ratio ◽  
Photon Counting ◽  
Laser Ranging ◽  
High Signal ◽  
Moving Targets ◽  
Signal To Noise ◽  
Noise Ratio
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