CA2316212A1 - System and methods for analyzing tooth shades - Google Patents

System and methods for analyzing tooth shades Download PDF

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Publication number
CA2316212A1
CA2316212A1 CA002316212A CA2316212A CA2316212A1 CA 2316212 A1 CA2316212 A1 CA 2316212A1 CA 002316212 A CA002316212 A CA 002316212A CA 2316212 A CA2316212 A CA 2316212A CA 2316212 A1 CA2316212 A1 CA 2316212A1
Authority
CA
Canada
Prior art keywords
color
camera
digital
tooth
shades
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
CA002316212A
Other languages
French (fr)
Other versions
CA2316212C (en
Inventor
Maryann Lehmann
Perry Youngs
Curtis A. Vock
Adrian Larkin
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.)
Shade Analyzing Tech 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 CA2316212A1 publication Critical patent/CA2316212A1/en
Application granted granted Critical
Publication of CA2316212C publication Critical patent/CA2316212C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/10—Supports for artificial teeth for transport or for comparison of the colour
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/462—Computing operations in or between colour spaces; Colour management systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/463—Colour matching
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/508—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors measuring the colour of teeth
    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/28—Determining representative reference patterns, e.g. by averaging or distorting; Generating dictionaries
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/56—Extraction of image or video features relating to colour
    • 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
    • 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
    • G06V10/77—Processing image or video features in feature spaces; using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]; Blind source separation
    • G06V10/772—Determining representative reference patterns, e.g. averaging or distorting patterns; Generating dictionaries

Abstract

A digital camera (12) connects to a tooth shade analyzer subsystem, e.g., a digital video processor (14), and a color display monitor for the electronic determination of the color of patient's teeth. Preliminarily, the camera captures (26) a series of digital color images of tooth shades corresponding to reference shade guides (34), and electronically compares the reference shades to an image of the patient's tooth. In a preferred embodiment the comparison is done over a set of pseudo-pixels, each corresponding to a group of pixels in an high-resolution camera. Once a match is found, it is communicated to a user of the system (52). In a specific embodiment the camera is equipped with a sleeve and illumination subsystems that help reduce the variations in the color of digital images due to external factors.
CA002316212A 1998-11-03 1999-10-04 System and methods for analyzing tooth shades Expired - Lifetime CA2316212C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US10692098P 1998-11-03 1998-11-03
US60/106,920 1998-11-03
US10929998P 1998-11-19 1998-11-19
US60/109,299 1998-11-19
US12061299P 1999-02-18 1999-02-18
US60/120,612 1999-02-18
PCT/US1999/022858 WO2000026847A1 (en) 1998-11-03 1999-10-04 System and methods for analyzing tooth shades

Publications (2)

Publication Number Publication Date
CA2316212A1 true CA2316212A1 (en) 2000-05-11
CA2316212C CA2316212C (en) 2005-05-17

Family

ID=27380218

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002316212A Expired - Lifetime CA2316212C (en) 1998-11-03 1999-10-04 System and methods for analyzing tooth shades

Country Status (8)

Country Link
US (1) US6210159B1 (en)
EP (2) EP1042729B1 (en)
JP (1) JP2002529122A (en)
AT (1) ATE439646T1 (en)
AU (1) AU6281999A (en)
CA (1) CA2316212C (en)
DE (1) DE69941249D1 (en)
WO (1) WO2000026847A1 (en)

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US20030078806A1 (en) * 2001-06-01 2003-04-24 Kudryk Val L. Teledentistry consult management system and method
EP1262751B1 (en) * 2001-06-01 2011-04-06 Ivoclar Vivadent AG Apparatus and method for analysing light
US6821116B2 (en) 2001-09-12 2004-11-23 Ivoclar Vivadent, Inc. System for scanning oral environment
US20030156681A1 (en) * 2002-02-15 2003-08-21 Egidio Cianciosi Dental imaging system and apparatus using IEEE 1394 protocol
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FR2842300A1 (en) * 2002-07-11 2004-01-16 Sopro METHOD AND DEVICE FOR SELECTING THE SHADE OF A DENTAL TEEN
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FR2853727B1 (en) * 2003-04-09 2006-05-05 Jean Pierre Tretout DEVICE AND METHOD FOR EVALUATING TINT OF AN OBJECT BY SPECTROMETRY
US7118374B2 (en) * 2003-06-09 2006-10-10 Ivoclar Vivadent Ag Enhanced tooth shade guide
US7064830B2 (en) * 2003-06-12 2006-06-20 Eastman Kodak Company Dental color imaging system
DE10352394B4 (en) * 2003-11-10 2009-07-30 Ivoclar Vivadent Ag Intraoral camera device and method for producing an aligned image of an intraoral object, in particular a patient's tooth
JP5073996B2 (en) * 2006-09-20 2012-11-14 オリンパス株式会社 Image processing device
EP2282697B1 (en) 2008-06-02 2016-12-14 DENTSPLY International Inc. Methods for designing a customized dental prosthesis using digital images of a patient
US9931188B2 (en) * 2009-05-29 2018-04-03 Ivoclar Vivadent Ag Dental color key
WO2014073642A1 (en) * 2012-11-09 2014-05-15 富士フイルム株式会社 Camera system, color conversion device and method employed thereupon, and color conversion program
DE102013106554A1 (en) 2013-06-24 2014-12-24 Qioptiq Photonics Gmbh & Co. Kg Non-contact dental device
US10613727B2 (en) 2016-02-19 2020-04-07 Ppg Industries Ohio, Inc. Color and texture match ratings for optimal match selection
CN109475285B (en) 2016-04-13 2021-07-06 检查员研究系统公司 Dual frequency dental examination
US11094085B2 (en) 2018-08-23 2021-08-17 Ivoclar Vivadent Ag System comprising a color selection aid and a method for determining tooth colors
EP3613381B1 (en) * 2018-08-23 2022-10-19 Ivoclar Vivadent AG System consisting of camera-app and a colour selection assistance unit and method for determining the color of teeth
EP3613382A1 (en) * 2018-08-23 2020-02-26 Ivoclar Vivadent AG System consisting of a colour selection body and a method for determining the color of teeth
CN110393602A (en) * 2019-06-24 2019-11-01 杭州芸景网络科技有限公司 A kind of repeatability is strong and artificial tooth colorimetric method with high accuracy

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Also Published As

Publication number Publication date
EP1042729B1 (en) 2009-08-12
WO2000026847A9 (en) 2001-07-12
EP2133820A2 (en) 2009-12-16
WO2000026847A1 (en) 2000-05-11
EP1042729A1 (en) 2000-10-11
EP1042729A4 (en) 2002-02-13
US6210159B1 (en) 2001-04-03
EP2133820A3 (en) 2010-02-10
AU6281999A (en) 2000-05-22
JP2002529122A (en) 2002-09-10
DE69941249D1 (en) 2009-09-24
ATE439646T1 (en) 2009-08-15
CA2316212C (en) 2005-05-17

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EEER Examination request
MKEX Expiry

Effective date: 20191004

MKEX Expiry

Effective date: 20191004