학술논문

Target detection for depth imaging using sparse single-photon data
Document Type
Conference
Source
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on. :3256-3260 Mar, 2016
Subject
Signal Processing and Analysis
Bayes methods
Photonics
Imaging
Object detection
Laser radar
Estimation
Adaptation models
Full waveform Lidar
Poisson statistics
Bayesian estimation
Reversible Jump Markov Chain Monte Carlo
depth imaging
Language
ISSN
2379-190X
Abstract
This paper presents a new Bayesian model and associated algorithm for depth and intensity profiling using full waveforms from time-correlated single-photon counting (TCSPC) measurements when the photon count in very low. The model represents each Lidar waveform as an unknown constant background level, which is combined in the presence of a target, to a known impulse response weighted by the target intensity and finally corrupted by Poisson noise. The joint target detection and depth imaging problem is expressed as a pixel-wise model selection problem which is solved using Bayesian inference. A Reversible Jump Markov chain Monte Carlo algorithm is proposed to compute the Bayesian estimates of interest. Finally, the benefits of the methodology are demonstrated through a series of experiments using real data.