WO1997018524A3 - Vector correlation system for automatically locating patterns in an image - Google Patents

Vector correlation system for automatically locating patterns in an image Download PDF

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Publication number
WO1997018524A3
WO1997018524A3 PCT/US1996/017590 US9617590W WO9718524A3 WO 1997018524 A3 WO1997018524 A3 WO 1997018524A3 US 9617590 W US9617590 W US 9617590W WO 9718524 A3 WO9718524 A3 WO 9718524A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
vector correlation
correlation system
automatically locating
template
Prior art date
Application number
PCT/US1996/017590
Other languages
French (fr)
Other versions
WO1997018524A2 (en
Inventor
Stephen S Wilson
Original Assignee
Applied Intelligent Syst 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
Application filed by Applied Intelligent Syst Inc filed Critical Applied Intelligent Syst Inc
Priority to JP51889697A priority Critical patent/JP3942193B2/en
Priority to DE69623642T priority patent/DE69623642T2/en
Priority to EP96938732A priority patent/EP0864134B1/en
Publication of WO1997018524A2 publication Critical patent/WO1997018524A2/en
Publication of WO1997018524A3 publication Critical patent/WO1997018524A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • 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
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G06T7/74—Determining position or orientation of objects or cameras using feature-based methods involving reference images or patches
    • 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
    • G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
    • G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
    • G06V10/751—Comparing pixel values or logical combinations thereof, or feature values having positional relevance, e.g. template matching
    • G06V10/7515—Shifting the patterns to accommodate for positional errors

Abstract

The present invention relates to a combined approach of image and template correlation, and vector correlation wherein edge detection and pattern searching are joined in a single operation to provide great flexibility without requiring extensive computational facilities. A template is devised from a sparse set of coordinate points that model only the important edges of an object to be located within an image. Different templates are dynamically reconstructed as an estimation of the object location within the image becomes more precise.
PCT/US1996/017590 1995-11-13 1996-11-05 Vector correlation system for automatically locating patterns in an image WO1997018524A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP51889697A JP3942193B2 (en) 1995-11-13 1996-11-05 A vector correlation system that automatically locates patterns in images.
DE69623642T DE69623642T2 (en) 1995-11-13 1996-11-05 VECTOR CORRELATION SYSTEM FOR AUTOMATICALLY FINDING PATTERNS IN AN IMAGE
EP96938732A EP0864134B1 (en) 1995-11-13 1996-11-05 Vector correlation system for automatically locating patterns in an image

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/556,367 1995-11-13
US08/556,367 US6023530A (en) 1995-11-13 1995-11-13 Vector correlation system for automatically locating patterns in an image

Publications (2)

Publication Number Publication Date
WO1997018524A2 WO1997018524A2 (en) 1997-05-22
WO1997018524A3 true WO1997018524A3 (en) 1997-06-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/017590 WO1997018524A2 (en) 1995-11-13 1996-11-05 Vector correlation system for automatically locating patterns in an image

Country Status (6)

Country Link
US (2) US6023530A (en)
EP (1) EP0864134B1 (en)
JP (2) JP3942193B2 (en)
KR (1) KR100367303B1 (en)
DE (1) DE69623642T2 (en)
WO (1) WO1997018524A2 (en)

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US9147252B2 (en) 2003-07-22 2015-09-29 Cognex Technology And Investment Llc Method for partitioning a pattern into optimized sub-patterns

Also Published As

Publication number Publication date
WO1997018524A2 (en) 1997-05-22
EP0864134B1 (en) 2002-09-11
EP0864134A2 (en) 1998-09-16
KR19990067567A (en) 1999-08-25
JP2000500594A (en) 2000-01-18
EP0864134A4 (en) 1999-08-04
DE69623642D1 (en) 2002-10-17
JP3942193B2 (en) 2007-07-11
JP2007164816A (en) 2007-06-28
DE69623642T2 (en) 2003-08-21
KR100367303B1 (en) 2003-04-11
US6385340B1 (en) 2002-05-07
JP4494427B2 (en) 2010-06-30
US6023530A (en) 2000-02-08

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