CA2227815A1 - Apparatus and method for automated visual inspection of objects - Google Patents

Apparatus and method for automated visual inspection of objects

Info

Publication number
CA2227815A1
CA2227815A1 CA002227815A CA2227815A CA2227815A1 CA 2227815 A1 CA2227815 A1 CA 2227815A1 CA 002227815 A CA002227815 A CA 002227815A CA 2227815 A CA2227815 A CA 2227815A CA 2227815 A1 CA2227815 A1 CA 2227815A1
Authority
CA
Canada
Prior art keywords
high resolution
image
camera
targets
target
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.)
Granted
Application number
CA002227815A
Other languages
French (fr)
Other versions
CA2227815C (en
Inventor
Ernest M. Reimer
Ivi Hermanto
Paul Hearn
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.)
Nordischer Maschinenbau Rud Baader GmbH and Co KG
Original Assignee
Canpolar East Inc
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
Priority to US08/927,332 priority Critical patent/US6061086A/en
Application filed by Canpolar East Inc filed Critical Canpolar East Inc
Priority to CA002227815A priority patent/CA2227815C/en
Publication of CA2227815A1 publication Critical patent/CA2227815A1/en
Application granted granted Critical
Publication of CA2227815C publication Critical patent/CA2227815C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges

Abstract

The present invention relates to an apparatus and method for the automated inspection of objects for the presence of visual anomalies. The apparatus includes a first wide angle camera for acquiring an image of the object, a processor for detecting targets and generating target location from the image of the object, a two axis post-objective scanner associated with a high resolution camera for directing target image to the high resolution camera. The scanner provides a mechanism for saccadic emulation in combination with a high resolution video camera, which can be synchronized to the frame rate of the video camera for rapid high resolution examination of an object. The method according to the present invention comprises the steps of: capturing an image of at least a portion of an object; identifying visual anomalies as targets and detecting any targets on the object; generating location data for a detected target; emulating saccadic niovement to selectively capture a high resolution image of a target; and generating an output for analysis. The apparatus and method are particularly suited for the automated detection of defects, in particular parasites, in fish fillets. It is an advantage of the present invention that post-objective scanning permits the camera to remain stationary, while only the mirrors are moved, to acquire high resolution data of substantially only the targets, resulting in increased speed and reduced processing time.
CA002227815A 1997-09-11 1998-01-23 Apparatus and method for automated visual inspection of objects Expired - Lifetime CA2227815C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/927,332 US6061086A (en) 1997-09-11 1997-09-11 Apparatus and method for automated visual inspection of objects
CA002227815A CA2227815C (en) 1997-09-11 1998-01-23 Apparatus and method for automated visual inspection of objects

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/927,332 1997-09-11
US08/927,332 US6061086A (en) 1997-09-11 1997-09-11 Apparatus and method for automated visual inspection of objects
CA002227815A CA2227815C (en) 1997-09-11 1998-01-23 Apparatus and method for automated visual inspection of objects

Publications (2)

Publication Number Publication Date
CA2227815A1 true CA2227815A1 (en) 1999-03-11
CA2227815C CA2227815C (en) 2007-05-22

Family

ID=25679996

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002227815A Expired - Lifetime CA2227815C (en) 1997-09-11 1998-01-23 Apparatus and method for automated visual inspection of objects

Country Status (2)

Country Link
US (1) US6061086A (en)
CA (1) CA2227815C (en)

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Also Published As

Publication number Publication date
CA2227815C (en) 2007-05-22
US6061086A (en) 2000-05-09

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