公开(公告)号：US20210302322A1

公开(公告)日：2021-09-30

申请号：US17200706

申请日：2021-03-12

Applicant: Gemological Institute of America, Inc. (GIA)

Inventor： Tsung-Han TSAI ,  Hiroshi TAKAHASHI

IPC: G01N21/87 ,  G01N21/65 ,  G01J3/28

Abstract: Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

公开(公告)号：US10859505B2

公开(公告)日：2020-12-08

申请号：US15881583

申请日：2018-01-26

Applicant: Gemological Institute of America, Inc. (GIA)

Inventor： Ronald Geurts ,  Wuyi Wang ,  Alex Balter ,  Christopher M. Breeding

IPC: G01N21/88 ,  G01N21/87 ,  G01N21/64 ,  G01N21/93

Abstract: Some examples herein include systems and methods of creating standards of gemstones of various classifications, which may display certain characteristics of the various classifications when excited by ultraviolet radiation and fluoresce in response. In some examples, a set of standards are created using fluorescent material, filters, and a radiation source to compare against a sample gemstone.

公开(公告)号：US10318515B2

公开(公告)日：2019-06-11

申请号：US15151902

申请日：2016-05-11

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： Marc Verboven ,  Troy Blodgett

IPC: G06F7/00 ,  G06F16/22 ,  G01N21/87

Abstract: A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

公开(公告)号：US09366638B2

公开(公告)日：2016-06-14

申请号：US13845995

申请日：2013-03-18

Applicant: GEMOLOGICAL INSTITUTE OF AMERICA, INC. (GIA)

Inventor： Marc Verboven ,  Troy Blodgett

IPC: G06F7/00 ,  G01N21/87

CPC classification number: G06F17/30339 ,  G01N21/87

Abstract: A method and system for generating a clarity grading look-up table includes collecting actual inclusion parameter data for a plurality of gems, where the actual inclusion parameter data includes an actual clarity grade and an actual inclusion parameter data combination. A mathematical relationship between a clarity grade and a particular inclusion parameter combination is then extrapolated from the actual inclusion parameter data. A derived clarity grade is then assigned to a plurality of inclusion parameter combinations as a function of the mathematical relationship and a set of inputted inclusion parameters. Also, a method and system for providing a clarity grade includes receiving a plurality of inclusion characteristics associated with a gem and parameterizing each of the inclusion characteristics, so that a parameter value is assigned to each inclusion characteristic. The parameter values are then input to a mathematical formula so as to provide a parameterized clarity grade for the gem.

公开(公告)号：US20020008925A1

公开(公告)日：2002-01-24

申请号：US09931907

申请日：2001-08-16

Applicant: Gemological Institute of America, Inc.

Inventor： Gilbert N. Ravich ,  Shane Elen ,  James E. Shigley

IPC: G02B005/22

CPC classification number: G02B27/025 ,  B65D5/5028 ,  B65D77/26 ,  G01N21/87 ,  G02B25/002 ,  Y10T29/23

Abstract: A gem identifying device using filtered transmitted light for use in distinguishing type-I colorless diamonds from type II colorless diamonds, and natural diamonds and gems from synthetic or treated diamonds and gems.

公开(公告)号：US12270765B2

公开(公告)日：2025-04-08

申请号：US18421823

申请日：2024-01-24

Applicant: Gemological Institute of America, Inc.

Inventor： Hiroshi Takahashi

IPC: G06T7/90 ,  G01N21/25 ,  G01N21/87 ,  G01N33/00 ,  G01N21/88

Abstract: Provided herein is an apparatus for assessing a color characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a sample gemstone to be assessed, a daylight-approximating light source to provide uniform illumination to the gemstone, an image capturing component, and a telecentric lens positioned to provide an image of the illuminated gemstone to the image capturing component. Also provided are methods of color analysis based on images collected using such an apparatus.

公开(公告)号：US12085511B2

公开(公告)日：2024-09-10

申请号：US18226742

申请日：2023-07-26

Applicant: Gemological Institute of America, Inc. (GIA)

Inventor： Tsung-Han Tsai ,  Hiroshi Takahashi

IPC: G01J3/44 ,  G01J3/28 ,  G01N21/65 ,  G01N21/87

CPC classification number: G01N21/87 ,  G01J3/2823 ,  G01N21/65 ,  G01J2003/2836 ,  G01N2021/656

Abstract: Systems and methods here may be used for automated capturing and analyzing spectrometer data of multiple sample gemstones on a stage, including mapping digital camera image data of samples, applying a Raman Probe to a first sample gemstone under evaluation on the stage, receiving spectrometer data of the sample gemstone from the probe, automatically moving the stage to a second sample, using the image data, and analyzing the other samples.

公开(公告)号：US20240167955A1

公开(公告)日：2024-05-23

申请号：US18420704

申请日：2024-01-23

Applicant: Gemological Institute of America, Inc. (GIA)

Inventor： Hiroshi TAKAHASHI

IPC: G01N21/64 ,  G01N21/87 ,  G01N33/38

CPC classification number: G01N21/6456 ,  G01N21/87 ,  G01N33/381 ,  G01N2021/6471 ,  G01N2201/062 ,  G01N2201/0634 ,  G01N2201/068 ,  G01N2201/12

Abstract: Provided herein is an apparatus for assessing a fluorescence characteristic of a gemstone. The apparatus comprises an optically opaque platform for supporting a gemstone to be assessed, one or more light source to provide uniform UV and non-UV illumination, an image capturing component, and a telecentric lens positioned to provide fluorescent images of the illuminated gemstone to the image capturing component. Also provided are methods of fluorescence analysis based on images collected using such an apparatus.

公开(公告)号：US11915407B2

公开(公告)日：2024-02-27

申请号：US18080722

申请日：2022-12-13

Applicant: Gemological Institute of America, Inc. (GIA)

Inventor： Marc Verboven ,  Troy Blodgett ,  Dirk Nuyts

IPC: G06T7/00 ,  G01N21/87 ,  G01N21/88

CPC classification number: G06T7/0004 ,  G01N21/87 ,  G01N21/88 ,  G01N2021/8809 ,  G06T2207/30108

Abstract: A computer-based system and method for taking clarity measurements of a gem, and a computer-readable medium having computer-executable instructions, are provided and include receiving a pixilated image of a gem and identifying pixels representing an inclusion. The method and medium further include determining characteristics of the inclusion as a function of the pixels representing the inclusion, and providing a clarity grade based upon the determined characteristics. Also provided is a method for mapping a gem, and a computer-readable medium having computer-executable instructions, which include receiving a pixilated image of a gem having facet edges, and identifying pixels representing the facet edges. The method and medium further include generating a diagram of the gem, such that the diagram is a function of the pixels representing the facet edges, and superimposing the diagram onto the pixilated image.

公开(公告)号：US20230408419A1

公开(公告)日：2023-12-21

申请号：US18200425

申请日：2023-05-22

Applicant: Gemological Institute of America, Inc. (GIA)

Inventor： Jongsik KIM ,  Sudhin MANDAL

IPC: G01N21/87 ,  G06T5/20 ,  G06V10/141 ,  G06V10/74 ,  G02B5/20

CPC classification number: G01N21/87 ,  G06T5/20 ,  G02B5/20 ,  G06V10/761 ,  G06V10/141

Abstract: Systems and methods here may be used for capturing images of sample gemstones under structured, filtered illumination for later comparison and image matching for authentication using networked computer systems.