Quantum-Noise Limited Distance Resolution of Optical Range Imaging Techniques

Seitz, Peter

doi:10.1109/tcsi.2008.918231

Cited by 23 publications

(7 citation statements)

References 15 publications

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“…This study focuses on quantifying the depth resolution achievable under different conditions. Previous research has been done on determining the absolute limits of depth resolution for phase shift ToF [10]. Starting from the theoretical foundations of dToF this work proceeds to quantify the effect of operational factors-signal, noise and jitter level-on the achievable precision of depth resolution.…”

Section: Peak Detectionmentioning

confidence: 99%

An experimentally verified model for estimating the distance resolution capability of direct time of flight 3D optical imaging systems

Nguyen¹,

Fisher²,

Walton³

et al. 2013

Meas. Sci. Technol.

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This report introduces a new statistical model for time-resolved photon detection in a generic single-photon-sensitive sensor array. The model is validated by comparing modelled data with experimental data collected on a single-photon avalanche diode sensor array. Data produced by the model are used alongside corresponding experimental data to calculate, for the first time, the effective distance resolution of a pulsed direct time of flight 3D optical imaging system over a range of conditions using four peak-detection algorithms. The relative performance of the algorithms is compared. The model can be used to improve the system design process and inform selection of the optimal peak-detection algorithm.

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Section: Peak Detectionmentioning

confidence: 99%

An experimentally verified model for estimating the distance resolution capability of direct time of flight 3D optical imaging systems

Nguyen¹,

Fisher²,

Walton³

et al. 2013

Meas. Sci. Technol.

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“…As shown in [16,17], the noise variance and therefore the accuracy of the depth measurements depends on the amplitude of the received infra red signal as…”

Section: Noise Characteristics Of Tof Sensorsmentioning

confidence: 99%

Denoising algorithm for the 3D depth map sequences based on multihypothesis motion estimation

Jovanov

Pižurica

Philips

2011

EURASIP J. Adv. Signal Process.

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This article proposes an efficient wavelet-based depth video denoising approach based on a multihypothesis motion estimation aimed specifically at time-of-flight depth cameras. We first propose a novel bidirectional block matching search strategy, which uses information from the luminance as well as from the depth video sequence. Next, we present a new denoising technique based on weighted averaging and wavelet thresholding. Here we take into account the reliability of the estimated motion and the spatial variability of the noise standard deviation in both imaging modalities. The results demonstrate significantly improved performance over recently proposed depth sequence denoising methods and over state-of-the-art general video denoising methods applied to depth video sequences.

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“…Basically, the deterministic limit for this sensor system is given by photon noise [20]. The received modulation signal I MOD is accompanied by the noise current i MOD ¼ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi…”

Section: Physical Accuracy Limitationsmentioning

confidence: 99%

Sunlight-proof optical distance measurements with a dual-line lock-in time-of-flight sensor

Zach

Davidović

Zimmermann

2011

Analog Integr Circ Sig Process

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This work describes time-of-flight distance measurements with a line sensor based on the correlation principle. It is capable of suppressing maximum bright sunlight and even more electronically in each pixel autonomously without using any optical filters. The optical fill factor of a pixel is 58% embodying a 100 9 100 lm 2 photodiode. Working principle of the pixel circuit and the mechanism for suppression of ambient illumination as well as physical limitation of accuracy are discussed. Characterizations of the single-pixel performance with 650 nm laser and 850 nm LED sources with optical output powers of 1 mW and 900 mW, respectively, are presented. Finally, measured characteristics of the line sensor for distances up to 3.2 m are shown. The standard deviation is below 2 cm up to 1.2 m at a measurement time of 50 ms per distance point and the near-infrared LED illumination.

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Quantum-Noise Limited Distance Resolution of Optical Range Imaging Techniques

Cited by 23 publications

References 15 publications

An experimentally verified model for estimating the distance resolution capability of direct time of flight 3D optical imaging systems

An experimentally verified model for estimating the distance resolution capability of direct time of flight 3D optical imaging systems

Denoising algorithm for the 3D depth map sequences based on multihypothesis motion estimation

Sunlight-proof optical distance measurements with a dual-line lock-in time-of-flight sensor

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