CA2061865A1 - Methods and apparatus for optically determining the acceptability of products - Google Patents

Methods and apparatus for optically determining the acceptability of products

Info

Publication number
CA2061865A1
CA2061865A1 CA002061865A CA2061865A CA2061865A1 CA 2061865 A1 CA2061865 A1 CA 2061865A1 CA 002061865 A CA002061865 A CA 002061865A CA 2061865 A CA2061865 A CA 2061865A CA 2061865 A1 CA2061865 A1 CA 2061865A1
Authority
CA
Canada
Prior art keywords
images
discriminant function
acceptable
acceptability
products
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
CA002061865A
Other languages
French (fr)
Other versions
CA2061865C (en
Inventor
Kenneth A. Cox
Henry M. Dante
Robert J. Maher
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.)
Philip Morris Products Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2061865A1 publication Critical patent/CA2061865A1/en
Application granted granted Critical
Publication of CA2061865C publication Critical patent/CA2061865C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/001—Industrial image inspection using an image reference approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/04—Sorting according to size
    • B07C5/10—Sorting according to size measured by light-responsive means
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/21—Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
    • G07C3/14—Quality control systems
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30164—Workpiece; Machine component

Abstract

The acceptability of the appearance of objects such as consumer products is determined by forming an initial discriminant function as a composite of a relatively small number of images which are known to be acceptable. This initial discriminant function is then used to gather statistical information about how a first relatively large number of images compares to the initial discriminant function. Thereafter, this statistical information is.used to select or aid in the selection of acceptable images from a second relatively large number of images, and the images selected as acceptable are used to refine the discriminant function. The refined discriminant function is then used (e.g., during actual product inspection) to determine which objects have an acceptable appearance and which do not.
CA002061865A 1991-02-27 1992-02-26 Methods and apparatus for optically determining the acceptability of products Expired - Fee Related CA2061865C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US661,809 1991-02-27
US07/661,809 US5146510A (en) 1989-02-09 1991-02-27 Methods and apparatus for optically determining the acceptability of products

Publications (2)

Publication Number Publication Date
CA2061865A1 true CA2061865A1 (en) 1992-08-28
CA2061865C CA2061865C (en) 2004-10-26

Family

ID=24655202

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002061865A Expired - Fee Related CA2061865C (en) 1991-02-27 1992-02-26 Methods and apparatus for optically determining the acceptability of products

Country Status (10)

Country Link
US (1) US5146510A (en)
EP (1) EP0501784B1 (en)
JP (1) JP3126474B2 (en)
KR (1) KR100225836B1 (en)
AT (1) ATE173554T1 (en)
CA (1) CA2061865C (en)
DE (1) DE69227603T2 (en)
DK (1) DK0501784T3 (en)
ES (1) ES2124241T3 (en)
HK (1) HK1013872A1 (en)

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US5237621A (en) * 1991-08-08 1993-08-17 Philip Morris Incorporated Product appearance inspection methods and apparatus employing low variance filter
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US5822208A (en) * 1994-04-12 1998-10-13 Bay Instrumentation & Technology Co. Method and apparatus for predicting errors in a manufacturing process
US6201576B1 (en) * 1998-06-26 2001-03-13 Lucent Technologies Inc. Apparatus and method for detecting an NTSC signal in an HDTV transmission signal
US6169600B1 (en) 1998-11-20 2001-01-02 Acuity Imaging, Llc Cylindrical object surface inspection system
DE19938964A1 (en) * 1999-08-17 2001-03-08 Siemens Ag Method and device for video monitoring of process plants
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US7668362B2 (en) 2000-05-03 2010-02-23 Aperio Technologies, Inc. System and method for assessing virtual slide image quality
US9092841B2 (en) 2004-06-09 2015-07-28 Cognex Technology And Investment Llc Method and apparatus for visual detection and inspection of objects
US7545949B2 (en) * 2004-06-09 2009-06-09 Cognex Technology And Investment Corporation Method for setting parameters of a vision detector using production line information
EP1658567A4 (en) * 2003-07-18 2008-01-30 Commw Scient Ind Res Org A method and system for selecting one or more variables for use with a statistical model
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US8127247B2 (en) * 2004-06-09 2012-02-28 Cognex Corporation Human-machine-interface and method for manipulating data in a machine vision system
US20050276445A1 (en) * 2004-06-09 2005-12-15 Silver William M Method and apparatus for automatic visual detection, recording, and retrieval of events
US8891852B2 (en) 2004-06-09 2014-11-18 Cognex Technology And Investment Corporation Method and apparatus for configuring and testing a machine vision detector
US7720315B2 (en) 2004-11-12 2010-05-18 Cognex Technology And Investment Corporation System and method for displaying and using non-numeric graphic elements to control and monitor a vision system
US9292187B2 (en) 2004-11-12 2016-03-22 Cognex Corporation System, method and graphical user interface for displaying and controlling vision system operating parameters
US7636449B2 (en) 2004-11-12 2009-12-22 Cognex Technology And Investment Corporation System and method for assigning analysis parameters to vision detector using a graphical interface
US20060116902A1 (en) * 2004-11-29 2006-06-01 Canon U.S.A., Inc. Method and apparatus for workflow
US8164622B2 (en) 2005-07-01 2012-04-24 Aperio Technologies, Inc. System and method for single optical axis multi-detector microscope slide scanner
DE102005053224A1 (en) 2005-11-06 2007-05-24 Prt Patent Registration Service & Trade Ltd. Device for non-invasive removal of strontium from human body, comprises two electrodes, switch control, source of DC-voltage and transistor
DE202006020357U1 (en) 2006-09-21 2008-10-30 Safetec Gmbh Electrode and device for electro-foot bath
US8103085B1 (en) 2007-09-25 2012-01-24 Cognex Corporation System and method for detecting flaws in objects using machine vision
US8873862B2 (en) * 2011-06-28 2014-10-28 Rakuten, Inc. Product image processor, product image processing method, information recording medium, and program
US9651499B2 (en) 2011-12-20 2017-05-16 Cognex Corporation Configurable image trigger for a vision system and method for using the same
US10297020B2 (en) 2015-09-18 2019-05-21 Datalogic Ip Tech S.R.L. Stereoscopic system and method for quality inspection of cigarettes in cigarette packer machines
DE102019104822A1 (en) * 2019-02-26 2020-08-27 Wago Verwaltungsgesellschaft Mbh Method and device for monitoring an industrial process step

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Also Published As

Publication number Publication date
KR920016977A (en) 1992-09-25
EP0501784B1 (en) 1998-11-18
HK1013872A1 (en) 1999-09-10
JP3126474B2 (en) 2001-01-22
US5146510A (en) 1992-09-08
DE69227603D1 (en) 1998-12-24
EP0501784A2 (en) 1992-09-02
JPH05126757A (en) 1993-05-21
EP0501784A3 (en) 1994-02-16
CA2061865C (en) 2004-10-26
DK0501784T3 (en) 1999-06-23
DE69227603T2 (en) 1999-06-24
KR100225836B1 (en) 1999-10-15
ATE173554T1 (en) 1998-12-15
ES2124241T3 (en) 1999-02-01

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