Four-dimensional imager (4DI): a real-time three-dimensional imager

Steven J. Gordon; Faycal Benayad-Cherif

doi:10.1117/12.198845

6 January 1994 Four-dimensional imager (4DI): a real-time three-dimensional imager

Steven J. Gordon, Faycal Benayad-Cherif

Proceedings Volume 2348, Imaging and Illumination for Metrology and Inspection; (1994) https://doi.org/10.1117/12.198845
Event: Photonics for Industrial Applications, 1994, Boston, MA, United States

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.

Citation Download Citation

Steven J. Gordon and Faycal Benayad-Cherif "Four-dimensional imager (4DI): a real-time three-dimensional imager", Proc. SPIE 2348, Imaging and Illumination for Metrology and Inspection, (6 January 1994); https://doi.org/10.1117/12.198845

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