The paper describes the results of a feasibility study performed by FIAT and aimed at developing an in-line vision system for inspecting disk brake rotors. The variety of the examined surface defects, produced mainly by melting and mechanical finishing operations, required two different visual techniques to be operating simultaneously: one uses linescan cameras and a tailored software package that combining autocovariance analysis with filters, thresholds operators and template matches enables quasi-periodic and non periodic noisy defects to be detected; the other, utilizing some properties of the scattered laser light from rough surfaces, allows to identify small and large surface cavities inside a relief. The vision system essentially consists on three cameras, a laser head and a computer based control unit and, at present, is under development.

  • Supplemental Notes:
    • ISATA 84, "In Pursuit of Technical Excellence". Proceedings Volume 2. International Symposium on Automotive Technology and Automation with particular reference to Vehicle Management Systems and Flexible Manufacturing Systems, Milan, Italy 24-28 September 1984.
  • Corporate Authors:

    Automotive Automotion Limited

    42 Lloyd Park Avenue
    Croydon CRO 5SB, Surrey,   England 

    Alfa Romeo Auto SpA

    Milan,   Italy 
  • Authors:
    • Milana, E
    • Strobbia, L
  • Publication Date: 1984

Media Info

  • Features: Figures; References;
  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00399977
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: ISATA 84103, HS-038 517
  • Files: HSL, USDOT
  • Created Date: Nov 30 1985 12:00AM