EP1521950A1 - Method and device for selecting shade of a colour coding ring - Google Patents
Method and device for selecting shade of a colour coding ringInfo
- Publication number
- EP1521950A1 EP1521950A1 EP03756495A EP03756495A EP1521950A1 EP 1521950 A1 EP1521950 A1 EP 1521950A1 EP 03756495 A EP03756495 A EP 03756495A EP 03756495 A EP03756495 A EP 03756495A EP 1521950 A1 EP1521950 A1 EP 1521950A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- image
- sample
- screen
- camera
- shade guide
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008014 freezing Effects 0.000 claims abstract description 4
- 238000007710 freezing Methods 0.000 claims abstract description 4
- 230000036346 tooth eruption Effects 0.000 claims description 22
- 210000004513 dentition Anatomy 0.000 claims description 14
- 206010043183 Teething Diseases 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 4
- 230000002401 inhibitory effect Effects 0.000 claims 2
- 238000003384 imaging method Methods 0.000 abstract 1
- 239000003086 colorant Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
-
- 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
Definitions
- the present invention relates to a method for selecting the shade of a shade guide sample closest to the actual color of a patient's tooth, as well as to a device for implementing such a method.
- the object of the present invention is to remedy this drawback by proposing a method and a device enabling such selection to be carried out quickly and easily.
- the present invention thus relates to a method for determining the sample of a shade guide closest to the color of at least part of at least one dentition element of a patient, characterized in that it comprises the steps of, using shooting means comprising a video camera, to: - capture and freeze on the screen a color image of this teething element,
- the image of the shade guide samples can be scrolled on the screen.
- the image chrominance value of the video camera compared to the normal setting will be increased, when capturing the image of the dentition element and filming the shade guide. the camera.
- the present invention also relates to a device for determining the sample of a shade guide closest to the color of at least part of at least one dentition element of a patient, of the type comprising a video camera. , characterized in that it comprises:
- This device may include means making it possible to freeze the image of the sample on the screen, as well as means capable of placing, in a contiguous manner and without separation, the image of the dentition element and the image of the sample.
- Figures 1 and 2 are schematic views of an installation showing two respective phases of the method according to the invention.
- a video camera 1 is used with which a tooth 3 is filmed, the color of which one wishes to reproduce, and the video signal obtained, after processing in a conventional device for signal processing 5, is sent to a video monitor 7.
- a control member such as for example a pedal 6, on the signal processing device 5 in order to freeze the image 7a of the tooth on the screen of the monitor 7, that is to say to immobilize the latter and keep it.
- each of the samples is scrolled, as shown in FIG. 2, under the lens of camera 1 9 lf 9 2 , 9 3 ... 9 n of the shade guide 9 which is filmed, at the same time as the image 7b obtained is displayed, on the video monitor 7 next to the image 7a of the tooth 3.
- a first assessment leads the practitioner to consider that the values of the tints of the two images displayed on the screen are close, he again actuates the pedal 6 of the signal processing device 5 which then freezes the image 7b of the shade guide sample which is filmed on one half of the screen, as shown in the drawing.
- the chrominance of the blue, green signals will be increased (compared to a setting for normal use of the camera). and red of the camera, and this of the same amount for the respective shots of the tooth and the elements 9 n of the shade guide. It is also possible to increase the differences in chrominance of the signals (Y being the luminance and R and B being the respective values of the red and blue signals, these differences in chrominance being in these conditions RY and BY).
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0208748A FR2842300A1 (en) | 2002-07-11 | 2002-07-11 | METHOD AND DEVICE FOR SELECTING THE SHADE OF A DENTAL TEEN |
FR0208748 | 2002-07-11 | ||
PCT/FR2003/002207 WO2004008093A1 (en) | 2002-07-11 | 2003-07-11 | Method and device for selecting shade of a colour coding ring |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1521950A1 true EP1521950A1 (en) | 2005-04-13 |
Family
ID=29763751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03756495A Withdrawn EP1521950A1 (en) | 2002-07-11 | 2003-07-11 | Method and device for selecting shade of a colour coding ring |
Country Status (10)
Country | Link |
---|---|
US (1) | US20060114460A1 (en) |
EP (1) | EP1521950A1 (en) |
JP (1) | JP2005532561A (en) |
KR (1) | KR20050030200A (en) |
CN (1) | CN100439883C (en) |
AU (1) | AU2003280986A1 (en) |
BR (1) | BR0312110A (en) |
CA (1) | CA2491660A1 (en) |
FR (1) | FR2842300A1 (en) |
WO (1) | WO2004008093A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070079411P1 (en) * | 2003-11-28 | 2007-04-05 | Holtmaat Hendricus M | Astilbe plant named 'Key West' |
US20050196039A1 (en) * | 2004-03-02 | 2005-09-08 | Wolfgang Bengel | Method for color determination using a digital camera |
US8050519B2 (en) | 2005-12-19 | 2011-11-01 | Olympus Corporation | Image combining apparatus |
US20070140553A1 (en) * | 2005-12-19 | 2007-06-21 | Olympus Corporation | Dental colorimetry apparatus |
ES2379102T3 (en) * | 2007-01-25 | 2012-04-20 | Vita Zahnfabrik H. Rauter Gmbh & Co. Kg | Presentation system for dental samples |
FR2938936B1 (en) * | 2008-11-25 | 2016-01-15 | Sopro | MULTIFUNCTION IMAGE ACQUISITION DEVICE |
EP2259034A1 (en) * | 2009-05-29 | 2010-12-08 | Ivoclar Vivadent AG | Dental colour analysis device |
ES2551235T3 (en) | 2011-02-14 | 2015-11-17 | Ivoclar Vivadent Ag | Procedure for manufacturing a dental restoration piece and CAD / CAM device |
KR102276601B1 (en) | 2019-09-03 | 2021-07-12 | 박연경 | Magnetic Type Color Check Panel for Dental Prosthesis |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990000733A1 (en) * | 1988-07-14 | 1990-01-25 | Garibaldi Pty. Ltd. | Computerised colour matching |
JPH02114957A (en) * | 1988-10-24 | 1990-04-27 | Ricoh Co Ltd | Tooth color display device for preparing artificial tooth |
US5766006A (en) * | 1995-06-26 | 1998-06-16 | Murljacic; Maryann Lehmann | Tooth shade analyzer system and methods |
US6254385B1 (en) * | 1997-01-02 | 2001-07-03 | Lj Laboratories, Llc | Apparatus and method for measuring optical characteristics of teeth |
JPH10318840A (en) * | 1997-05-16 | 1998-12-04 | Naoya Sugiki | Method for color matching |
JP4053652B2 (en) * | 1998-03-23 | 2008-02-27 | 株式会社東芝 | White uniformity evaluation method and apparatus |
WO2000025696A1 (en) * | 1998-11-03 | 2000-05-11 | Shade Analyzing Technologies, Inc. | Interactive dental restorative network |
JP2002529122A (en) * | 1998-11-03 | 2002-09-10 | シェード アナライジング テクノロジーズ インコーポレイテッド | System and method for analyzing tooth shade |
US6328567B1 (en) * | 1999-01-21 | 2001-12-11 | Dentech, Llc | Method, apparatus and system for automated tooth shade analysis and matching |
JP4130280B2 (en) * | 1999-06-30 | 2008-08-06 | 株式会社松風 | Dental color guide |
-
2002
- 2002-07-11 FR FR0208748A patent/FR2842300A1/en not_active Withdrawn
-
2003
- 2003-07-11 EP EP03756495A patent/EP1521950A1/en not_active Withdrawn
- 2003-07-11 KR KR1020057000541A patent/KR20050030200A/en not_active Application Discontinuation
- 2003-07-11 CN CNB038164701A patent/CN100439883C/en not_active Expired - Fee Related
- 2003-07-11 WO PCT/FR2003/002207 patent/WO2004008093A1/en not_active Application Discontinuation
- 2003-07-11 BR BR0312110-0A patent/BR0312110A/en not_active IP Right Cessation
- 2003-07-11 AU AU2003280986A patent/AU2003280986A1/en not_active Abandoned
- 2003-07-11 US US10/520,916 patent/US20060114460A1/en not_active Abandoned
- 2003-07-11 CA CA002491660A patent/CA2491660A1/en not_active Abandoned
- 2003-07-11 JP JP2004520777A patent/JP2005532561A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2004008093A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2005532561A (en) | 2005-10-27 |
BR0312110A (en) | 2005-03-29 |
CA2491660A1 (en) | 2004-01-22 |
FR2842300A1 (en) | 2004-01-16 |
US20060114460A1 (en) | 2006-06-01 |
CN1668904A (en) | 2005-09-14 |
AU2003280986A1 (en) | 2004-02-02 |
WO2004008093A1 (en) | 2004-01-22 |
CN100439883C (en) | 2008-12-03 |
KR20050030200A (en) | 2005-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20041222 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20061115 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MAZUIR, ALAIN Inventor name: BOYER, PHILIPPE |
|
18D | Application deemed to be withdrawn |
Effective date: 20070529 |
|
D18D | Application deemed to be withdrawn (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20111014 |