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Proceedings Paper

Real-time inspection of metal laminates by means of CNNs
Author(s): Victor M. Preciado; Domingo Guinea; Rodrigo Montufar-Chaveznava; Jose Vicente
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Paper Abstract

Analog CNN array computer arises as an alternative to traditional digital processors in many industrial inspection like visual quality control of metal laminants, capable of make in a single chip Tera equivalent operations per second. A 4096 analog CNN processor array is able to perform complex space-time image analysis, being much faster than a camera- computer system in continuous inspection applications. Both chips have been implemented in CMOS technology and they are managed by a 32-bit high-performance low-cost micro- controller that closes the pan, tilt, lighting, focus and zoom loops required in the implementation of the active vision strategies. Several convolution masks for the Cellular Processors has been selected to detect particular changes in the texture, size, direction or orientation of the image entities, reprogramming `on the fly' the pixel resolution of shape when necessary. Laboratory results present these Cellular Processors and multiple resolution imager circuits as a promising architecture for visual inspection of industrial processes in real time.

Paper Details

Date Published: 4 April 2001
PDF: 11 pages
Proc. SPIE 4301, Machine Vision Applications in Industrial Inspection IX, (4 April 2001); doi: 10.1117/12.420920
Show Author Affiliations
Victor M. Preciado, Univ. de Extremadura (Spain)
Domingo Guinea, Consejo Superior de Investigaciones Cientificas (Spain)
Rodrigo Montufar-Chaveznava, Consejo Superior de Investigaciones Cientificas (Spain)
Jose Vicente, Univ. de Extremadura (Spain)


Published in SPIE Proceedings Vol. 4301:
Machine Vision Applications in Industrial Inspection IX
Martin A. Hunt, Editor(s)

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