Journal ArticleDOI
Influence of speckle on laser range finders
Réjean Baribeau,Marc Rioux +1 more
TLDR
Speckle noise is shown to constitute a fundamental limit to laser range finders based on triangulation and a model is derived that relates the magnitude of this noise to the optical geometry used.Abstract:
Speckle noise is shown to constitute a fundamental limit to laser range finders based on triangulation. A model is derived that relates the magnitude of this noise to the optical geometry used. Synchronized laser scanners are shown to have inherent speckle noise reduction properties. Experimental results are presented.read more
Citations
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Journal ArticleDOI
Review of 20 years of range sensor development
TL;DR: An overview of 3-D digitizing techniques is presented with an emphasis on commercial techniques and systems currently available, with a focus on commercial systems that are considered good representations of the key technologies that have survived the test of years.
Journal ArticleDOI
Laser ranging: a critical review of usual techniques for distance measurement
TL;DR: In this paper, the basic principles of triangulation and time of flight (pulsed, phase-shift and frequency modulated continu- ous wave (FMCW)), discussed their respective fundamental limitations.
Journal ArticleDOI
Laser triangulation: fundamental uncertainty in distance measurement
TL;DR: The uncertainty limit in distance sensing by laser triangulation is discussed, and the same distance uncertainty that was obtained from a single-photon experiment and from Heisenberg's uncertainty principle is obtained.
Proceedings ArticleDOI
Better optical triangulation through spacetime analysis
Brian Curless,Marc Levoy +1 more
TL;DR: A new ranging method based on analyzing the time evolution of the structured light reflections of the laser stripe triangulation scanners is presented, thereby attaining significantly higher accuracy using existing technology.
Journal ArticleDOI
A benchmark for surface reconstruction
TL;DR: A benchmark for the evaluation and comparison of algorithms which reconstruct a surface from point cloud data is presented and a simple pipeline for measuring surface reconstruction algorithms is proposed, consisting of three main phases: surface modeling, sampling, and evaluation.
References
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Journal ArticleDOI
Some fundamental properties of speckle
TL;DR: In this paper, the distribution of scale sizes in a speckle pattern (i.e., the Wiener spectrum) is investigated from a physical point of view, and it is shown that adding M uncorrelated speckles on an intensity basis can reduce the contrast by 1/√M.
Journal ArticleDOI
Coupling efficiency of optics in single-mode fiber components
TL;DR: This paper combines fiber-coupling fundamentals, classical optics, and diffraction theory to provide a compact description of coupling efficiency that includes the effects of aberrations, fiber misalignments, and fiber-mode mismatch.
Journal ArticleDOI
Real-time numerical peak detector
TL;DR: In this paper, a simple and effective peak detector is proposed, which gives in real-time the position and amplitude of a peak in a digital signal to a precision better than one pixel.
Journal ArticleDOI
Design Of A Large Depth Of View Three-Dimensional Camera For Robot Vision
TL;DR: It is shown that the Scheimpflug condition of focusing coupled with the low divergence of a laser beam provides an ideal arrangement for large depth of view.
Journal ArticleDOI
Three-dimensional correlation coefficient of speckle intensity for rectangular and circular apertures
TL;DR: In this article, the average three-dimensional size of speckles produced by the illumination of optically rough surfaces with coherent laser light is determined from the autocorrelation function of intensity in space.