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Proceedings Paper

A Flexible Industrial System For Automated Three-Dimensional Inspection
Author(s): Marc M. Landman; Scot J. Robertson
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Paper Abstract

A structured light technique is utilized to perform precise, non-contact, continuous dimensional measurement of products on a moving conveyor belt. A plane of near infrared laser light is projected onto the workpiece and a triangulation method is used to reconstruct the three-dimensional properties of the object. Applications of this technique include determination of thickness, depth, length and width, as well as product contour and shape analysis. The system is robust and suitable for on-line industrial inspection of all types of products. Gray scale image analysis is used with data filtering techniques to achieve high resolution and accuracy. A gradient edge detection algorithm minimizes processing time and enhances system throughput. If desired, a stored reference position can be utilized when the conveyor belt or work surface is not available for direct computation of product depth. The advantages of this system over previous systems lie in the flexibility of the system for on-line industrial inspection and in the accuracy and reliability produced by multiple line scan, multiple frame, gray scale analysis.

Paper Details

Date Published: 22 January 1987
PDF: 7 pages
Proc. SPIE 0728, Optics, Illumination, and Image Sensing for Machine Vision, (22 January 1987); doi: 10.1117/12.937840
Show Author Affiliations
Marc M. Landman, Octek Inc. (United States)
Scot J. Robertson, Octek Inc. (United States)

Published in SPIE Proceedings Vol. 0728:
Optics, Illumination, and Image Sensing for Machine Vision
Donald J. Svetkoff, Editor(s)

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