JPS5661635A - Classification method for color of pearl according to diffuse spectral characteristic - Google Patents

Classification method for color of pearl according to diffuse spectral characteristic

Info

Publication number
JPS5661635A
JPS5661635A JP13770579A JP13770579A JPS5661635A JP S5661635 A JPS5661635 A JP S5661635A JP 13770579 A JP13770579 A JP 13770579A JP 13770579 A JP13770579 A JP 13770579A JP S5661635 A JPS5661635 A JP S5661635A
Authority
JP
Japan
Prior art keywords
color
pearl
detection
classification method
spectral characteristic
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
JP13770579A
Other languages
Japanese (ja)
Inventor
Teizo Aida
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.)
Individual
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
Priority to JP13770579A priority Critical patent/JPS5661635A/en
Publication of JPS5661635A publication Critical patent/JPS5661635A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/87—Investigating jewels

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To improve the accuracy of the classification of the color of a pearl by detecting the feature of the color of a pearl, and classifying the pearl according to the detection result. CONSTITUTION:A pearl-color detector comprises a light source A, a dome B having the white-coated inner surface, a pearl holder C in the dome B, a detection unit D for the quantity of the diffuse reflectance light from a pearl, and an extraction unit E of the feature of the color of a pearl. The incident rays from the light source A are applied to a pearl on the holder C. The quantity of the diffuse reflectance light from the pearl is sensed by the detection unit D, and converted into a color detection quantity in the color feature extraction unit E. According to the color detection quantity, the color of the parl is classified.
JP13770579A 1979-10-26 1979-10-26 Classification method for color of pearl according to diffuse spectral characteristic Pending JPS5661635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13770579A JPS5661635A (en) 1979-10-26 1979-10-26 Classification method for color of pearl according to diffuse spectral characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13770579A JPS5661635A (en) 1979-10-26 1979-10-26 Classification method for color of pearl according to diffuse spectral characteristic

Publications (1)

Publication Number Publication Date
JPS5661635A true JPS5661635A (en) 1981-05-27

Family

ID=15204885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13770579A Pending JPS5661635A (en) 1979-10-26 1979-10-26 Classification method for color of pearl according to diffuse spectral characteristic

Country Status (1)

Country Link
JP (1) JPS5661635A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296591A (en) * 1988-01-27 1989-11-29 Rhopoint Instrumentation Ltd Light source luminance controller
US5239354A (en) * 1991-06-19 1993-08-24 Russell Kenneth M Method and apparatus for the positive identification of a natural pearl and for measuring the thickness of the nacre coating of cultured pearls
US6747662B2 (en) 1998-01-26 2004-06-08 Kansai Paint Co., Ltd. Method for classifying and arranging metallic paint colors
WO2012026048A1 (en) * 2010-08-24 2012-03-01 株式会社 ミキモト Method for nondestructively inspecting pearl qualities
WO2015118576A1 (en) * 2014-02-07 2015-08-13 株式会社真珠科学研究所 Pearl assessment system, pearl assessment device and pearl assessment method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296591A (en) * 1988-01-27 1989-11-29 Rhopoint Instrumentation Ltd Light source luminance controller
US5239354A (en) * 1991-06-19 1993-08-24 Russell Kenneth M Method and apparatus for the positive identification of a natural pearl and for measuring the thickness of the nacre coating of cultured pearls
US6747662B2 (en) 1998-01-26 2004-06-08 Kansai Paint Co., Ltd. Method for classifying and arranging metallic paint colors
US6992277B2 (en) 1998-01-26 2006-01-31 Kansai Paint Co., Ltd. Method for classifying and arranging metallic paint colors
WO2012026048A1 (en) * 2010-08-24 2012-03-01 株式会社 ミキモト Method for nondestructively inspecting pearl qualities
JP2012047489A (en) * 2010-08-24 2012-03-08 K Mikimoto & Co Ltd Method for determining nondestruction of pearl quality
WO2015118576A1 (en) * 2014-02-07 2015-08-13 株式会社真珠科学研究所 Pearl assessment system, pearl assessment device and pearl assessment method
JP5984127B2 (en) * 2014-02-07 2016-09-06 ビバコンピュータ株式会社 Pearl evaluation system, pearl evaluation device, and pearl evaluation method
CN106461565A (en) * 2014-02-07 2017-02-22 株式会社真珠科学研究所 Pearl assessment system, pearl assessment device and pearl assessment method

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