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Proceedings Paper

Four-dimensional imager (4DI): a real-time three-dimensional imager
Author(s): Steven J. Gordon; Faycal Benayad-Cherif
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Paper Abstract

A sensing technique for making continuous geometric measurements of the surfaces of 3D objects is described. The sensor has several advantages over other 3D sensing technologies including the ability to quickly strobe the light source, thereby freezing any relative motion and high-precision measurement capability. The system is also robust to ambient lighting, able to measure across surface discontinuities, and capable of measuring moving objects. The technique uses a fan of laser planes to illuminate the scene and multiple solid-state video cameras to measure the stripes in the scene. The methods for disambiguating and triangulating the stripes into 3D coordinates are given and an example reconstructed scene is presented.

Paper Details

Date Published: 6 January 1994
PDF: 6 pages
Proc. SPIE 2348, Imaging and Illumination for Metrology and Inspection, (6 January 1994); doi: 10.1117/12.198845
Show Author Affiliations
Steven J. Gordon, Intelligent Automation Systems, Inc. (United States)
Faycal Benayad-Cherif, Intellignet Automation Systems (United States)


Published in SPIE Proceedings Vol. 2348:
Imaging and Illumination for Metrology and Inspection
Donald J. Svetkoff, Editor(s)

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