Title:
宝石用原石を査定、評価及び等級付けする装置及び方法
Document Type and Number:
Japanese Patent JP2010523180
Kind Code:
A
Abstract:
An apparatus (10) for assessment, evaluation and grading of gemstones has a stage (11) upon which a gemstone may be supported, the stage being enclosed in a housing (15) that is impervious to light. At least one light source (14) located in the housing is adapted to project incident light onto the gemstone. There are means for rotating and tilting the stage so as to vary the orientation of the gemstone to the incident light. A digital camera (16) is located in the housing adjacent the or each light source and is adapted to take images of the gemstone based on reflection and/or refraction of the incident light. There are also information processing means for calibrating and analyzing the images, with the information processing means being programmed with an instruction set for color calibrating the images and then analyzing the color calibrated images by segmentation and histogram measurement.
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Inventors:
Hona Brook, Graham Alfred
Merchant, Stuart Norman
Ramis, Rodney Herbert
Purmer, Kathryn Elizabeth
Sutton, Peter Bruce
Hona Brook, Angus Nelson
Bischoff, Lane
Lagerstrom, Ryan
Hilsenstein, Volker
Imley, Robert, George
Merchant, Stuart Norman
Ramis, Rodney Herbert
Purmer, Kathryn Elizabeth
Sutton, Peter Bruce
Hona Brook, Angus Nelson
Bischoff, Lane
Lagerstrom, Ryan
Hilsenstein, Volker
Imley, Robert, George
Application Number:
JP2010501328A
Publication Date:
July 15, 2010
Filing Date:
April 02, 2008
Export Citation:
Assignee:
Opal Producers Australia Limited
International Classes:
A44C27/00
Domestic Patent References:
| JPH09311074A | 1997-12-02 | |||
| JP2003194725A | 2003-07-09 | |||
| JP3410332B2 | 2003-05-26 | |||
| JPH09273994A | 1997-10-21 | |||
| JP2001190313A | 2001-07-17 | |||
| JP2003073170A | 2003-03-12 | |||
| JPS58728A | 1983-01-05 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Hashimoto Yasushige
Sekiya Mitsuo
Hashimoto Yasushige