Design and implementation of a metal surface defect image acquisition system

Joon Hee Han; Kyueun Yi

doi:10.1117/12.271233

15 April 1997 Design and implementation of a metal surface defect image acquisition system

Joon Hee Han, Kyueun Yi

Proceedings Volume 3029, Machine Vision Applications in Industrial Inspection V; (1997) https://doi.org/10.1117/12.271233
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

A high speed, high resolution surface defect image acquisition system has been designed and implemented. The system was designed to acquire images of a wide, moving metal surface. The goal of the system is to show the factory operators the location and the shape of surface defects. Since the size of a defect is very small and the area of inspection is very large, a great amount of pixel data should be handled within a short time. In order to achieve this requirement, a large amount of data reduction is needed. The system consists of a set of CCD linescan cameras, a line image processing system, and a workstation. Among the components of the system, lighting and multicamera system are the most important parts. Six high resolution linescan cameras are used to obtain more than twenty thousand pixels per each line. The line image processing unit consists of a camera controller, frame grabbers, and defect image modules. In order to reduce the data drastically, run-length-encoding scheme was used--encoding only the locations of possible defects. These programs were implemented with FPGA chips. We show our implementation details in this paper.

Citation Download Citation

Joon Hee Han and Kyueun Yi "Design and implementation of a metal surface defect image acquisition system", Proc. SPIE 3029, Machine Vision Applications in Industrial Inspection V, (15 April 1997); https://doi.org/10.1117/12.271233

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