GB0616167D0 - Inspection of components in SMT - Google Patents

Inspection of components in SMT

Info

Publication number
GB0616167D0
GB0616167D0 GBGB0616167.3A GB0616167A GB0616167D0 GB 0616167 D0 GB0616167 D0 GB 0616167D0 GB 0616167 A GB0616167 A GB 0616167A GB 0616167 D0 GB0616167 D0 GB 0616167D0
Authority
GB
United Kingdom
Prior art keywords
component
board
roi
colour
pixels
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.)
Withdrawn
Application number
GBGB0616167.3A
Other versions
GB2440951A (en
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.)
MV Research Ltd
MV Res Ltd
Original Assignee
MV Research Ltd
MV Res 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 MV Research Ltd, MV Res Ltd filed Critical MV Research Ltd
Priority to GB0616167A priority Critical patent/GB2440951A/en
Publication of GB0616167D0 publication Critical patent/GB0616167D0/en
Publication of GB2440951A publication Critical patent/GB2440951A/en
Withdrawn legal-status Critical Current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
    • G06T7/0006—Industrial image inspection using a design-rule based approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/004—
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/12—Edge-based segmentation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/136—Segmentation; Edge detection involving thresholding
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/08—Monitoring manufacture of assemblages
    • 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
    • G06T2207/30141—Printed circuit board [PCB]

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Operations Research (AREA)
  • Quality & Reliability (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

An automated optical inspection (AOI) system is used to determine the position of a surface mount technology (SMT) component on a circuit board. Colour images, e.g. RGB, are captured of the component on the circuit board and an image processor analyses regions of interest (ROI), namely an ROI which is expected to include only pixels of the board, and an ROI which is expected to include only pixels of the component. The system performs training on pixels representing the component and the board, and uses this training to detect an edge of the component. This may be done by providing a 3D histogram for the component colour and a separate 3D histogram for the board colour. The edge detection can be used to check the correct positioning of components on the board even when there is low contrast between the component and the board.
GB0616167A 2006-08-15 2006-08-15 Edge detection for checking component position on a circuit board Withdrawn GB2440951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0616167A GB2440951A (en) 2006-08-15 2006-08-15 Edge detection for checking component position on a circuit board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0616167A GB2440951A (en) 2006-08-15 2006-08-15 Edge detection for checking component position on a circuit board

Publications (2)

Publication Number Publication Date
GB0616167D0 true GB0616167D0 (en) 2006-09-20
GB2440951A GB2440951A (en) 2008-02-20

Family

ID=37056353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0616167A Withdrawn GB2440951A (en) 2006-08-15 2006-08-15 Edge detection for checking component position on a circuit board

Country Status (1)

Country Link
GB (1) GB2440951A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113739695A (en) * 2020-05-27 2021-12-03 云米互联科技(广东)有限公司 Image-based radio frequency connector detection method, detection device and storage medium

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101566460B (en) * 2008-04-24 2012-07-18 鸿富锦精密工业（深圳）有限公司 Substrate detection system for double-sided circuit board, detection method and detection carrier therefor
CN102435137A (en) * 2010-09-29 2012-05-02 竞陆电子(昆山)有限公司 Special connecting piece bearing jig for module board automated visual inspection (AVI) equipment
CN105891622B (en) * 2014-12-23 2019-10-15 中科众志信通(大连)科技有限公司 Circuit board repair assists picture pixels dynamic link method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311600A (en) * 1992-09-29 1994-05-10 The Board Of Trustees Of The Leland Stanford Junior University Method of edge detection in optical images using neural network classifier
US7133572B2 (en) * 2002-10-02 2006-11-07 Siemens Corporate Research, Inc. Fast two dimensional object localization based on oriented edges
JP4830501B2 (en) * 2005-02-21 2011-12-07 オムロン株式会社 Substrate inspection method and apparatus, and inspection logic setting method and apparatus thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113739695A (en) * 2020-05-27 2021-12-03 云米互联科技(广东)有限公司 Image-based radio frequency connector detection method, detection device and storage medium

Also Published As

Publication number Publication date
GB2440951A (en) 2008-02-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)