Process and equipment for sensing surface defects on a moving st

Details Process and equipment for sensing surface defects on a moving st Process and equipment for sensing surface defects on a moving st

1985-02-11

1987-05-12

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250563, 358106, 356430, G01N 2189

Patent

active

046653171

ABSTRACT:
Images of successive portions of a surface of a strip are formed and converted as analog signals. Signals typical of each image are stored in an image storage whereas the analog signals relating to each image are converted in numerical form by splitting up the image into image elements. Each of the image elements is given a numerical value, and then filtered, in order to sense the relative variations of the numerical values of the image elements. To determine whether or not to deliver a defect-sensing signal in terms of the sensed variations, the filtered signal is scanned. The typical image is stored in response to the transmission of the defect signal. Every read-in information is stored and displayed at a check station long enough for a visual check of the image it represents.

REFERENCES:
patent: 3049588 (1962-08-01), Barnett
patent: 3887762 (1975-06-01), Uno et al.
patent: 4149089 (1979-04-01), Idelsohn et al.
patent: 4221974 (1980-09-01), Mueller et al.
patent: 4253113 (1981-02-01), Decavel et al.
patent: 4454545 (1984-06-01), Duschl
patent: 4546384 (1985-10-01), Kowalski
patent: 4561104 (1985-12-01), Martin
patent: 4570180 (1986-02-01), Baier et al.
Feliss et al., "Surface Analyzer", IBM Technical Disclosure Bulletin, vol. 25, No. 4, 9/82, p. 2047.
Suresh et al., "A Real-Time Automated Visual Inspection System for Hot Steel Slabs", IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. PAMI-5, No. 6, 11/83, pp. 563-571.

Affiliated with

Also associated with

Rating

Process and equipment for sensing surface defects on a moving st does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and equipment for sensing surface defects on a moving st, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and equipment for sensing surface defects on a moving st will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1804435