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公开(公告)号：US12117403B2
公开(公告)日：2024-10-15
申请号：US17620434
申请日：2020-05-21
申请人： De Beers UK Ltd
发明人： Qi He Hong
IPC分类号： G06V20/64 , A44C17/00 , G01N21/87 , G06T17/00 , G06T19/00 , G06T19/20 , G06V10/75 , H04N13/275 , H04N13/395
CPC分类号： G01N21/87 , A44C17/00 , A44C17/001 , G06T17/00 , G06T19/00 , G06T19/003 , G06T19/006 , G06T19/20 , G06V10/75 , G06V20/647 , H04N13/275 , H04N13/395 , G06T2219/00 , G06T2219/008 , G06T2219/2004 , G06T2219/2021
摘要： A method of determining an optimal target gemstone to be obtained from a rough gemstone comprises obtaining a first series of 2D images of the rough gemstone; providing a 3D model of a target gemstone to be obtained from the rough gemstone; and generating a second series of 2D images of the target gemstone from the 3D model thereof. The method then comprises comparing the first and second series of 2D images to determine an optimal transformation to be applied to the 3D model of the target gemstone.
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公开(公告)号：US20220254174A1
公开(公告)日：2022-08-11
申请号：US17620477
申请日：2020-05-21
申请人： De Beers UK Ltd
发明人： Qi He HONG
摘要： A method of re-identifying a rough gemstone comprises providing a 3D model of a first rough gemstone; generating a series of virtual 2D silhouette images of the 3D model; processing each 2D image of the series of virtual 2D silhouette images to obtain a dataset associated with the first rough gemstone; and comparing the dataset of the first rough gemstone with an existing dataset of a rough gemstone. Where the dataset of the first rough gemstone and the existing dataset match each other, the method comprises re-identifying the first rough gemstone as the same rough gemstone from which the existing dataset was obtained.
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公开(公告)号：US20190003980A1
公开(公告)日：2019-01-03
申请号：US16107503
申请日：2018-08-21
申请人： De Beers UK Ltd
摘要： A method of and an apparatus for providing an indicator for a diamond as to whether it is natural by testing for the presence or absence of one or more specific markers in the luminescence properties of the diamond, These markers are characterised by luminescence decay time and luminescence wavelength.
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公开(公告)号：US10082469B2
公开(公告)日：2018-09-25
申请号：US15739740
申请日：2016-06-28
申请人： De Beers UK Ltd
摘要： A method of and an apparatus for providing an indicator for a diamond as to whether it is natural by testing for the presence or absence of one or more specific markers in the luminescence properties of the diamond. These markers are characterized by luminescence decay time and luminescence wavelength.
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公开(公告)号：US20180156735A1
公开(公告)日：2018-06-07
申请号：US15737196
申请日：2016-06-13
申请人： De Beers UK Ltd
发明人： Alistair FITCH
摘要： The present disclosure relates to an apparatus for measuring a colour parameter of a gemstone. The apparatus comprises a support structure for supporting the gemstone at a measurement location, an illumination system for illuminating the gemstone at the measurement location, an imaging device directed towards the measurement location for obtaining an image of the gemstone, and an image processor for analysing the image of the gemstone. The image processor is configured to identify a set of stone pixels corresponding to the gemstone in the image and identify luminance and chrominance values for each stone pixel. A colour vector is calculated from an expression of the chrominance values of the stone pixels in chrominance space, the colour vector extending in chrominance space from stone pixels having a relatively high luminance value to stone pixels having a relatively low luminance value. This colour vector is used in the determination of the colour parameter.
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公开(公告)号：US09625393B2
公开(公告)日：2017-04-18
申请号：US14885507
申请日：2015-10-16
申请人： De Beers UK Ltd
CPC分类号： G01N21/87 , G01N21/01 , G01N33/381
摘要： An apparatus for viewing images of a gemstone is described. The apparatus comprises a support structure for supporting the gemstone at an observation position. An illumination structure comprises a plurality of directional light sources directed towards the observation position so as to illuminate the gemstone. The support structure and illumination structure are relatively rotatable relative to one another about a rotation axis. An imaging device is arranged to obtain images of the gemstone at the observation position at a variety of relative rotational positions between the illumination structure and support structure: the imaging device has an imaging axis passing through the observation position. The support structure is arranged so that the gemstone can be placed at the observation position in such a way that the normal to a selected facet of the gemstone is within a range of tilt angles from the rotation axis. The arrangement of directional light sources is such that, for any tilt angle within the range, at least one of the directional light sources will be specularly reflected from the selected facet into the imaging device for at least one rotational position of the support structure.
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公开(公告)号：US20240326097A1
公开(公告)日：2024-10-03
申请号：US18709297
申请日：2022-11-09
申请人： De Beers UK Ltd
发明人： Philip HARRIS , Peter Stanley ROSE , Andrew PORTSMOUTH , Trevor Anthony HARRIES , Colin MCGUINNESS , David FISHER
CPC分类号： B07C5/02 , B07C5/3425
摘要： A method of sorting gemstones comprises receiving one or more gemstones at a collection location; determining, at the collection location, that one of the one or more gemstones is correctly oriented; transferring the correctly oriented gemstone from the collection location onto a moveable surface using an automated arm; transporting the gemstone upon the moveable surface to one or more measurement locations; measuring one or more properties of the gemstone at the one or more measurement locations while the gemstone is supported upon the moveable surface; and sorting the gemstone based upon the one or more measured properties.
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公开(公告)号：US11893809B2
公开(公告)日：2024-02-06
申请号：US17620477
申请日：2020-05-21
申请人： De Beers UK Ltd
发明人： Qi He Hong
CPC分类号： G06V20/647 , G06V10/46 , G06V10/54 , G06V10/758
摘要： A method of re-identifying a rough gemstone comprises providing a 3D model of a first rough gemstone; generating a series of virtual 2D silhouette images of the 3D model; processing each 2D image of the series of virtual 2D silhouette images to obtain a dataset associated with the first rough gemstone; and comparing the dataset of the first rough gemstone with an existing dataset of a rough gemstone. Where the dataset of the first rough gemstone and the existing dataset match each other, the method comprises re-identifying the first rough gemstone as the same rough gemstone from which the existing dataset was obtained.
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公开(公告)号：US20190337021A1
公开(公告)日：2019-11-07
申请号：US16337349
申请日：2017-09-28
申请人： De Beers UK Ltd
摘要： An apparatus for sorting gemstones from a batch of gemstones comprises one or more measurement locations, a conveyor comprising a plurality of discrete compartments for containing the gemstones, a delivery device configured to deliver individual gemstones from the batch of gemstones to individual compartments of the conveyor and a controller configured to synchronise a speed of the conveyor with an operation of the one or more measurement locations such that the measurements of the gemstones can be correlated with a location of the gemstones in their associated compartments. A method of sorting gemstones from a batch of gemstones is also disclosed.
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公开(公告)号：US20230309665A1
公开(公告)日：2023-10-05
申请号：US18021145
申请日：2021-08-10
申请人： De Beers UK Ltd
CPC分类号： A44C15/0015 , A44C15/0035 , A44C17/0233
摘要： An assembly is provided comprising a gemstone holder and a battery housing. The gemstone holder comprises a bezel portion providing a mount for receiving a gemstone and a shaft portion comprising an elongate shaft. The elongate shaft comprises first and second electrically conducting portions. The battery housing comprises a battery power source and a plurality of apertures, the first one of said plurality of apertures being configured to enable engagement of an end portion of the shaft with a first connector within the housing, and the second one of said plurality of apertures being configured to enable engagement of an end portion of the shaft with a second connector within the housing. The assembly further comprises a light emitting diode, LED, configured to illuminate the gemstone. Engagement of the end portion of the shaft with the first connector completes an electrical circuit between the battery power source and the LED, whereas engagement of the end portion of the shaft with the second connector does not complete the electrical circuit.
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