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22 January 1987 A Flexible Industrial System For Automated Three-Dimensional Inspection
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Proceedings Volume 0728, Optics, Illumination, and Image Sensing for Machine Vision; (1987) https://doi.org/10.1117/12.937840
Event: Cambridge Symposium_Intelligent Robotics Systems, 1986, Cambridge, MA, United States
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.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marc M. Landman and Scot J. Robertson "A Flexible Industrial System For Automated Three-Dimensional Inspection", Proc. SPIE 0728, Optics, Illumination, and Image Sensing for Machine Vision, (22 January 1987); https://doi.org/10.1117/12.937840
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