Patent EP0360657A1 successfully refreshed from Google Patents.
EP0360657A1
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EP
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Method for determining the colour of an object, particularly of a dental prosthesis
Assignee: Bertin Technologies SAS
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Filing: 1989-09-08
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Granted: —
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Expires: 2009-09-08
Abstract
Abstract Method for determining the color of an object (10), such as a tooth, by measuring its diffuse spectral reflectance by means of a spectrometer (20), detectors (22) and electronic processing circuits (24, 26, 28) associated with a microprocessor (32), the method consisting in determining the total chromatic difference between the color of the tooth and the colors of a sample chart within a uniform space L*, a*, b*, and the root-mean-square deviation between the diffuse spectral reflectance of the tooth and that of the colors of a sample chart in order to determine the color of the prothesis.
Inventors
- 👤 Yves Pierre Dordet
- 👤 Jean-Michel Decaudin
- 👤 François Duret
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:01
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; A; A61; A61C; A61C19/00; A61C19/10; G01J3/50; G01J3/508; G01J2003/466; G01J3/463
Claims Analysis
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References Cited (Backward Citations)
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