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Optical Engineering

Line-scan sensor: an alternative sensor modality for the extraction of three-dimensional coordinate information
Author(s): Simon X. Godber; Max Robinson; J. Paul Owain Evans
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Paper Abstract

We describe research carried out to investigate a stereoscopic line-scan system for the extraction of 3-D coordinate information from a scene of interest. Initial work involved analyzing the operating characteristics of a line-scan device for the production of 2-D images. Following this, a theoretical appraisal was undertaken of a sensor in a stereoscopic arrangement, and a mathematical model was derived for the calibration of a novel camera system. Algorithms to determine the 3-D relationship of points in the object space were developed using this model. To test the suitability of the model, a complete stereoscopic line-scan system was constructed. Experiments were conducted with the stereo camera to establish the accuracy that is achieved with such a system using the developed algorithms. The results indicate that the relative position of points in the object space could be determined to an accuracy of less than 1 mm at a range of 1.5 m.

Paper Details

Date Published: 1 October 1995
PDF: 11 pages
Opt. Eng. 34(10) doi: 10.1117/12.210746
Published in: Optical Engineering Volume 34, Issue 10
Show Author Affiliations
Simon X. Godber, Nottingham Trent Univ. (United Kingdom)
Max Robinson, Nottingham Trent Univ. (United Kingdom)
J. Paul Owain Evans, Nottingham Trent Univ. (United Kingdom)

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