Modeling background variation for automated surface inspection of flat rolled metals

Robert C. Chang; Nabeel W.H. Sufi; Christopher W. Carroll

doi:10.1117/12.23548

1 November 1990 Modeling background variation for automated surface inspection of flat rolled metals

Robert C. Chang, Nabeel W.H. Sufi, Christopher W. Carroll

Proceedings Volume 1349, Applications of Digital Image Processing XIII; (1990) https://doi.org/10.1117/12.23548
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Surface inspection systems are being increasingly employed at high speed metal rolling mills for on-line real-lime detection of defects represented by variations from normal background. Detection algorithms typically involving ifitering and thresholding are used to segregate coil surface defects. Wear and deformation of work rolls used in rolling bring about gradual changes in the normal background. Consequently inspection systems must be capable of adapting to changing background conditions. The present paper proposes an engineering approach of threshold adjustment for background variations.

Citation Download Citation

Robert C. Chang, Nabeel W.H. Sufi, and Christopher W. Carroll "Modeling background variation for automated surface inspection of flat rolled metals", Proc. SPIE 1349, Applications of Digital Image Processing XIII, (1 November 1990); https://doi.org/10.1117/12.23548

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available