JPS6452453A - Judgement of tooth color for preparing artificial tooth - Google Patents

Judgement of tooth color for preparing artificial tooth

Info

Publication number
JPS6452453A
JPS6452453A JP21061487A JP21061487A JPS6452453A JP S6452453 A JPS6452453 A JP S6452453A JP 21061487 A JP21061487 A JP 21061487A JP 21061487 A JP21061487 A JP 21061487A JP S6452453 A JPS6452453 A JP S6452453A
Authority
JP
Japan
Prior art keywords
color
tooth
sample
min
adjacent tooth
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.)
Pending
Application number
JP21061487A
Inventor
Tomohiro Oikawa
Mototoshi Sakamaki
Kazuaki Tagawa
Original Assignee
Ricoh Kk
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 Ricoh Kk filed Critical Ricoh Kk
Priority to JP21061487A priority Critical patent/JPS6452453A/en
Publication of JPS6452453A publication Critical patent/JPS6452453A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To automatically replace an adjacent tooth with a color sample, by comparing the color image of the adjacent tooth with the numerical hue data of a preliminarily stored color sample to select a color sample min. in color difference. CONSTITUTION:The adjacent tooth of a tooth to be treated is photographed under a definite illumination condition by a color camera 11 to be displayed on the picture of a color CRT 12. Next, the hue data at the arbitrary point of the color image displayed on the color CRT 12 is handled as a numerical value and the color sample of the teeth min. in the inputted color difference with the teeth in the oral cavity is automatically selected. At this time, color comparison may be performed in an RGB color system and said hue data may be converted to other color system such as an XYZ color system to automatically select a shade guide becoming min. in color difference. By this method, the color data of the adjacent tooth 17 and a floppy disk 13 having the number selection data of the shade guide stored therein are regenerated on the picture of the color CRT 12 and an artificial tooth is prepared after this image.
JP21061487A 1987-08-25 1987-08-25 Judgement of tooth color for preparing artificial tooth Pending JPS6452453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21061487A JPS6452453A (en) 1987-08-25 1987-08-25 Judgement of tooth color for preparing artificial tooth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21061487A JPS6452453A (en) 1987-08-25 1987-08-25 Judgement of tooth color for preparing artificial tooth

Publications (1)

Publication Number Publication Date
JPS6452453A true JPS6452453A (en) 1989-02-28

Family

ID=16592241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21061487A Pending JPS6452453A (en) 1987-08-25 1987-08-25 Judgement of tooth color for preparing artificial tooth

Country Status (1)

Country Link
JP (1) JPS6452453A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007047045A (en) * 2005-08-10 2007-02-22 Olympus Corp Apparatus, method and program for image processing
JP2008292495A (en) * 2002-07-26 2008-12-04 Olympus Corp Image processing system
EP2818837A1 (en) 2013-06-24 2014-12-31 Qioptiq Photonics GmbH & Co. KG Contactless dental device for determining tooth colors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008292495A (en) * 2002-07-26 2008-12-04 Olympus Corp Image processing system
JP2007047045A (en) * 2005-08-10 2007-02-22 Olympus Corp Apparatus, method and program for image processing
EP2818837A1 (en) 2013-06-24 2014-12-31 Qioptiq Photonics GmbH & Co. KG Contactless dental device for determining tooth colors

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