Photon counting compressive depth mapping

Howland, Gregory A.; Lum, Daniel J.; Ware, Matthew; Howell, John C.

doi:10.1364/oe.21.023822

Cited by 165 publications

(129 citation statements)

References 27 publications

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“…As shown in previous work, the solver Gradient Projection for Sparse Reconstruction (GPSR) can be used as a least-squares fitting tool on the largest components of the signal returned by TVAL3 in a Haar wavelet basis [32,33]. A mask was obtained in the pixel basis by neglecting all values less than 4% of the maximum intensity from TVAL3 while least-squares was performed in the wavelet basis with GPSR.…”

Section: Resultsmentioning

confidence: 99%

Compressive wavefront sensing with weak values

2014

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We demonstrate a wavefront sensor based on the compressive sensing, single-pixel camera. Using a high-resolution spatial light modulator (SLM) as a variable waveplate, we weakly couple an optical field's transverse-position and polarization degrees of freedom. By placing random, binary patterns on the SLM, polarization serves as a meter for directly measuring random projections of the real and imaginary components of the wavefront. Compressive sensing techniques can then recover the wavefront. We acquire high quality, 256 × 256 pixel images of the wavefront from only 10, 000 projections. Photon-counting detectors give sub-picowatt sensitivity.

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Section: Resultsmentioning

confidence: 99%

Compressive wavefront sensing with weak values

2014

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“…However, with a large aperture LED and fast electronics, a LED SPCM could be used for multimode detection with good timing resolution (Howland, Lum, Ware, & Howell, 2013), shot noise limited power measurements or simply as an experimental tool for statistical analysis (Soares, Mendonca, & Ramos, 2014).…”

Section: Discussionmentioning

confidence: 99%

An Actively Quenched Single Photon Detector with a Light Emitting Diode

Starling¹,

Burger²,

Miller³

et al. 2015

MAS

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Light emitting diodes (LEDs) have applications in many industries for illumination. However, the LED is not limited to the generation of light. In this article, we demonstrate and analyze a low-cost LED for use as a single photon detector, rather than as an emitter. While many technologies have been developed for single photon detection, the focus has been on timing resolution and efficiency-not on cost of production. We compare our device to commercial solutions and validate the efficacy of active quenching to improve maximum photon count rate. While this device may be useful for labs requiring a large number of low-cost detectors, it can also serve as a teaching tool in advanced laboratory settings.

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“…In recent years, single-pixel imaging system [6][7][8][9][10][11][12][13] has been paid more and more attention and has been successfully applied in many fields, such as threedimensional imaging [6][7][8][9], optical security [10] and so on [11]. Single-pixel imaging system needs to modulate the illumination light intensity, and the reflected light is detected by single-pixel no-scanning detector.…”

Section: Introductionmentioning

confidence: 99%

“…Photon counting single-pixel lidar is built by the [8] and applied to obtain three-dimensional image and video at 14 frames per second. A background subtraction method [8,9] for object tracking at low light levels is proposed. From the numbers of the object tracking images, we can get the trajectory of moving object.…”

Section: Introductionmentioning

confidence: 99%

Detecting the Trajectory of Moving Object for Single-Pixel Imaging System

Hui

Chen

et al. 2018

MATEC Web Conf.

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Abstract. In order to get the trajectory of moving object using single-pixel imaging system, an algorithm is proposed. The same pseudorandom masks are employed to illuminate the different time scene. A time weighted sum of the background correction signals is employed to get the trajectory information using compressed sensing (CS) method. In ideal situation, we can obtain other parameters (e.g., speed, orientation) besides the trajectory. However, the reflective intensity of the object can be change due to the reflective angle change caused by the motion in some situations. This will mislead for achieving the speed, orientation parameters. In order to eliminate this effect, a division method is utilized. At last, the computer simulation results prove the effect validity of the proposed algorithm.

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Photon counting compressive depth mapping

Cited by 165 publications

References 27 publications

Compressive wavefront sensing with weak values

Compressive wavefront sensing with weak values

An Actively Quenched Single Photon Detector with a Light Emitting Diode

Detecting the Trajectory of Moving Object for Single-Pixel Imaging System

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