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Optical Engineering

Lateral resolution challenges for triangulation-based three-dimensional imaging systems
Author(s): David K. MacKinnon; Jean-Angelo Beraldin; Luc Cournoyer; Michel Picard; Francois Blais
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Paper Abstract

Lateral resolution is a particularly challenging concept to quantify in triangulation-based three-dimensional (3-D) imaging systems. We present these challenges, then describe an artifact-based methodology for evaluating the lateral resolution of a triangulation-based 3-D imaging system that uses laser spots or laser lines. In particular, the response of a 3-D imaging system to a spatial discontinuity (step edge) has traditionally been modeled as a first-order linear system. We model the response of a triangulation-based laser imaging system to a spatial step edge from first principles and demonstrate that the response should be modeled as a non linear system. This model is then used as a basis for evaluating the lateral (structural) resolution of a triangulation-based laser imaging system.

Paper Details

Date Published: 12 March 2012
PDF: 16 pages
Opt. Eng. 51(2) 021111 doi: 10.1117/1.OE.51.2.021111
Published in: Optical Engineering Volume 51, Issue 2
Show Author Affiliations
David K. MacKinnon, National Research Council Canada (Canada)
Jean-Angelo Beraldin, National Research Council Canada (Canada)
Luc Cournoyer, National Research Council Canada (Canada)
Michel Picard, National Research Council Canada (Canada)
Francois Blais, National Research Council Canada (Canada)

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