JPS5616849A - Automatic appearance check unit for cylindrical material - Google Patents

Automatic appearance check unit for cylindrical material

Info

Publication number
JPS5616849A
JPS5616849A JP9157579A JP9157579A JPS5616849A JP S5616849 A JPS5616849 A JP S5616849A JP 9157579 A JP9157579 A JP 9157579A JP 9157579 A JP9157579 A JP 9157579A JP S5616849 A JPS5616849 A JP S5616849A
Authority
JP
Japan
Prior art keywords
cylindrical materials
image pick
check unit
circumference surface
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9157579A
Other languages
Japanese (ja)
Inventor
Hiroshi Makihira
Toshimitsu Hamada
Yasuo Nakagawa
Makoto Uko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON NUCLEAR FUELS
NUCLEAR FUEL CO Ltd
Hitachi Ltd
Original Assignee
NIPPON NUCLEAR FUELS
NUCLEAR FUEL CO Ltd
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NIPPON NUCLEAR FUELS, NUCLEAR FUEL CO Ltd, Hitachi Ltd filed Critical NIPPON NUCLEAR FUELS
Priority to JP9157579A priority Critical patent/JPS5616849A/en
Priority to GB8023661A priority patent/GB2057675B/en
Priority to US06/170,181 priority patent/US4410278A/en
Priority to DE19803027373 priority patent/DE3027373A1/en
Priority to FR8015979A priority patent/FR2461944A1/en
Publication of JPS5616849A publication Critical patent/JPS5616849A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To eliminate variance of the scanning speed in the two-dimensional direction to perform high-precision check, by processing video signals, which are obtained from an image pick-up device by scanning in two dimensions, to check successively the outside circumference surface of cylindrical materials arranged into one line. CONSTITUTION:Many cylindrical materials 3 are arranged into one line and are arranged in parallel with two rollers 4a and 4b and are rotated in a fixed speed. Image pick-up device 5 is moved continuously in the arrangement direction of these cylindrical materials 3, and the moving speed is detected to shift picture element coordinates of the video signal obtained from image pick-up device 5 following this movement, and further, coordinates are updated for every one or two cylindrical materials 3. As a result, the outside circumference surface of many arranged cylindrical materials 3 can be checked efficiently with a minimum memory and a high precision.
JP9157579A 1979-07-20 1979-07-20 Automatic appearance check unit for cylindrical material Pending JPS5616849A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP9157579A JPS5616849A (en) 1979-07-20 1979-07-20 Automatic appearance check unit for cylindrical material
GB8023661A GB2057675B (en) 1979-07-20 1980-07-18 Photoelectric detection of surface defects
US06/170,181 US4410278A (en) 1979-07-20 1980-07-18 Method and apparatus for appearance inspection
DE19803027373 DE3027373A1 (en) 1979-07-20 1980-07-18 METHOD AND DEVICE FOR SURFACE TESTING
FR8015979A FR2461944A1 (en) 1979-07-20 1980-07-18 METHOD AND APPARATUS FOR EXAMINING THE OUTER ASPECT OF A FULL CYLINDRICAL OBJECT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9157579A JPS5616849A (en) 1979-07-20 1979-07-20 Automatic appearance check unit for cylindrical material

Publications (1)

Publication Number Publication Date
JPS5616849A true JPS5616849A (en) 1981-02-18

Family

ID=14030326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9157579A Pending JPS5616849A (en) 1979-07-20 1979-07-20 Automatic appearance check unit for cylindrical material

Country Status (1)

Country Link
JP (1) JPS5616849A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100791170B1 (en) 2006-04-14 2008-01-02 엘에스전선 주식회사 Apparatus and method for detecting scratches on metal surface using machine vision

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125057A (en) * 1977-04-08 1978-11-01 Hitachi Ltd Inspection apparatus for appearance of cylindrical object

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125057A (en) * 1977-04-08 1978-11-01 Hitachi Ltd Inspection apparatus for appearance of cylindrical object

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100791170B1 (en) 2006-04-14 2008-01-02 엘에스전선 주식회사 Apparatus and method for detecting scratches on metal surface using machine vision

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