WO2019185974A1 - Agencement de support pour système de reconnaissance d'objet gémologique - Google Patents

Agencement de support pour système de reconnaissance d'objet gémologique Download PDF

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Publication number
WO2019185974A1
WO2019185974A1 PCT/FI2019/050147 FI2019050147W WO2019185974A1 WO 2019185974 A1 WO2019185974 A1 WO 2019185974A1 FI 2019050147 W FI2019050147 W FI 2019050147W WO 2019185974 A1 WO2019185974 A1 WO 2019185974A1
Authority
WO
WIPO (PCT)
Prior art keywords
imaging
gemstone
camera
recognized
imaged
Prior art date
Application number
PCT/FI2019/050147
Other languages
English (en)
Inventor
Kari Niskanen
Original Assignee
Engemma Oy
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
Priority claimed from PCT/FI2018/050233 external-priority patent/WO2018178517A1/fr
Application filed by Engemma Oy filed Critical Engemma Oy
Priority to PCT/FI2019/050255 priority Critical patent/WO2019185993A1/fr
Publication of WO2019185974A1 publication Critical patent/WO2019185974A1/fr

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/143—Sensing or illuminating at different wavelengths
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements

Definitions

  • This outstanding disclosure of claimed embodiments of the invention in general relates to systems and methods for recognition of objects and, more particularly, to such object as gemstones, as well as in raw, but especially in processed form.
  • the disclosure relates also to the devices and system using such device in the object recognition accordingly, comprising an imaging device.
  • the disclosure relates also to gemstone imaging in gemstone examination and a system for the examination.
  • a gemstone holder arrangement to hold the gemstone during the imaging of the gemstone for recognizing the characteristics of the gemstone.
  • An imaging system comprises:
  • the - holder arrangement to hold the targeted object and to facilitate a respective movement of the targeted object in respect to the imaging device, such as a camera and/or the camera support or parts thereof.
  • Fig. 9 illustrates an imaging system example according to an embodiment, wherein the embodied imaging system comprises at least a camera, a camera boom and base.
  • the camera boom is arranged rotatable over the base, the base rotates 360 degrees.
  • Gemstones are set on the base and no further securing is needed in the example,
  • FIG 1C depicts a schematic illustrating tilting of the base in an embodiment, so that the camera path could be also embodied as in FIG 1A, but by constant path, but in an enabling manner to produce paths in inclined planes in the object-centered coordinate system for the dome.
  • the transformation can be made by a computer, in a microprocessor belonging in to the system, as well as the increment calculations and/or transformations relating to such where needed.
  • FIG 1F an object to be recognized is illustrated as such on a base.
  • the object can be in a different starting position than in the FIG 1E.
  • the base can be in an embodied system. The system can tilt and/or rotate the base and/or the object in suitable part.
  • the imaging device is embodied with at least one camera, as a camera unit that is illustrated to be schematically connected to an arm (as seen above, illustrated by a black dot), to facilitate the movement along the path (cf. FIG 1 A for example, and FIG 9 alternatives) around the object.
  • the camera is positioned so that it illustrates taking frames, images and/or video, so that there can be also the background Bgmd in suitable part.
  • the background can be chosen to dark, gray, colored otherwise or white, to enhance the contrast of the object’s visual appearance, and/or to distinguish the measures of character of the object.
  • the object and the background can be embodied to tilt together in an embodiment variant.
  • the object can be on a base according to the disclosure (i.e.
  • MV illustrates Mechanical Vibration damping system controller to control the damping system embodied that can be based in suitable part in passive layers in the base to absorb shocks in an embodiment, but in another embodiment in suitable part active transducers in the base to produce counter-phased vibrations to cancel the mechanical vibrations.
  • SPF(50) mirrors 50 % of the illumination to the imaging surface 3 via the filter 3 at the focus Foc3 focused to the corresponding focal plane in the object to be recognized.
  • the rest of the illumination coming to the camera is received by the imaging surface 4.
  • any further filter not shown a skilled person in the art understands that the illumination can be also filtered in suitable part in an embodiment variant.
  • the focus of the camera to produce focal depth in the object can be varied so that a single camera unit can be used to produce an ensemble of corresponding frame stacks with varying focal point with the corresponding focal plane in the object to be recognized at a camera location (Q h , F h ).
  • Fig 5 to 8 they are using a Cartesian coordinate type of notation when referring to the planes of camera path in the recordings of the frames, with a solution based on an embodied system, non-secured gemstones can be photographed thoroughly without any visible attachments. According to an embodiment, it is based on predefined X-Y axes of the gemstone, predefined gemstone x-y imaging angles based on these axes and/or calculating needed camera angle to position the camera on a gemstone imaging angle. The coordinates can be transformed as illustrated by the Fig 1D.
  • the illumination can be diffuse as such, even in one variant pulsed, having duration of the illumination at a certain first separate wavelength and a pitch there between of the same first separate wavelength having pulse to follow.
  • similar illumination pulses with another second separate wavelength can be arranged to the pitches between said two following first separate wavelength illumination pulses.
  • wavelengths of pulsed illumination can be more than two.
  • the timing of said first and second separate wavelength illumination pulses are not necessarily interdigitally timed to the mutual pitches, but can occur at least partly simultaneously.
  • the coordinate systems can be matched so that imaging can be performed smoothly and quickly. These can be also made in a measuring geometry coordinate system, or in an object’s own coordinate system or in suitable part afterwards, so that each frame need not to be matched individually between the coordinates and thus saving time for the imaging.
  • the ID in the database may use the a coordinate system with its origo fixed to a position in respect of a selected characteristic measure of the object when describing the characteristic features, although in the measurement the coordinates used by the system were using differently defined origo in the measurement system. Where applicable coordinate transformations can be made according to embodiments.
  • imaginary sphere defined location in the imaging can be completed in applicable part by an ensemble of domes, if necessary for the imaging of a complete gemstone all around for its identification.
  • imaginary sphere comprises at least one sphere half of the imaginary sphere for the ID-recognition of the gemstone.
  • the path of the imaging device around the gemstone to being imaged follows accordingly at least one dome in such an ensemble of domes.
  • the gemstone can be re-positioned, i.e. turned or pivoted for another imaginary sphere dome for the imaging such parts that have not been already imaged, in such cases in which such would be required for the imaging, in the identification via the imaginary sphere parts of domes for the recognition.
  • the frames can be obtained from the gemstone positions, obtained with the help of the measurement device and/or imaging device.
  • the object were deflecting from ordinary symmetrical diamond geometry, or, were irregularly shaped raw stone, it might be useful to have such a facility to a re -position of the object for the further placement in the holder arrangement of example 7 according to the disclosure, even at the entry phase to the arrangement, for a better contact of the picking pins.
  • the plates Ll and L2 and the object to be imaged there between as well as the cradle are transported by a motor in the placement bar support 1613S so that the placement bar 1613 can be positioned to the imaging volume, so that the object to be imaged can be placed to the center of the imaging volume, when acquiring the images and/or frames.
  • the imaging unit 1607 can be supported by a imaging unit support 1606.
  • the imaging unit support 1606 is attached to a motor 1605 that can pivot and/or rotate the support 1606 in the control of the computer conducting the imaging system in which the holder arrangement is a part, so that the imaging unit moves accordingly, along a path for the imaginary sphere locations.
  • the computer in the measurement device can control the operations of holder arrangement in the system according to disclosure.
  • the movement control of the camera unit on the path corresponding the imaginary sphere locations as well as the taking frames and image acquiry can be controlled with the computer in the system are examples of the computing capacity included items, in addition to the algorithm use in the measurement data analysis and/or authentication code generation.
  • an arm 507 shown in FIG 1G a further sophisticated imaging unit/camera movement structure can be used as in the FIG 16 embodied for the imaging unit that comprises several cameras in the example 7 to move along the imaging unit.
  • a next imaging location (n+1, (0h+D0,Fh+DF)) for the imaging device to collect a next at least one image stack (5 ⁇ h+1(0h+1,Fh+1)) corresponding an incremental change of at least one of the 0-direction increment (D0) and the F-direction increment (DF),
  • the method comprises defining the increments (D0, DF) in Cartesian co-ordinates.

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  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

La présente invention concerne un agencement, un système, un procédé et des dispositifs de support formant les éléments d'un système permettant la reconnaissance d'un objet (D) par un système de reconnaissance d'objet (500) comprenant un agencement de support un dispositif d'imagerie et un ensemble mobile pour déplacer ledit dispositif d'imagerie autour dudit objet, afin de former un modèle visuel certifié de l'objet à reconnaître. En particulier, l'invention concerne un agencement de support permettant de maintenir des pierres précieuses durant l'imagerie par un procédé d'imagerie consistant à photographier une cible, éclairée, par un appareil photo, afin d'obtenir au moins une image de l'objet ciblé à reconnaître.
PCT/FI2019/050147 2018-03-28 2019-02-22 Agencement de support pour système de reconnaissance d'objet gémologique WO2019185974A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2019/050255 WO2019185993A1 (fr) 2018-03-28 2019-03-28 Imagerie de plan focal étendue en utilisant un dispositif de manipulation de pierre précieuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FIPCT/FI2018/050233 2018-03-28
PCT/FI2018/050233 WO2018178517A1 (fr) 2017-03-29 2018-03-28 Reconnaissance d'objet gemmologique

Publications (1)

Publication Number Publication Date
WO2019185974A1 true WO2019185974A1 (fr) 2019-10-03

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PCT/FI2019/050147 WO2019185974A1 (fr) 2018-03-28 2019-02-22 Agencement de support pour système de reconnaissance d'objet gémologique

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WO (1) WO2019185974A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696065A (zh) * 2020-06-16 2020-09-22 桂林电子科技大学 一种基于图像处理的宝石图像高光去除方法
CN117092114A (zh) * 2023-10-16 2023-11-21 苏州德机自动化科技有限公司 一种基于ai的外观检测系统

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515157A (en) * 1993-10-18 1996-05-07 Can; Hanna Gem viewing and manipulation apparatus
GB2358541A (en) * 1999-10-29 2001-07-25 Diamond And Jewelry 4 U Ltd Gemstone image capture system
EP1211503A1 (fr) * 2000-12-04 2002-06-05 Diamcad Procédé et dispositif pour la localisation d'inclusions dans une pierre de diamant
JP3392926B2 (ja) * 1993-04-19 2003-03-31 オリンパス光学工業株式会社 宝石鑑定装置及びその方法
WO2004028288A2 (fr) * 2002-09-27 2004-04-08 Dialit Ltd. Systeme de formation d'images tridimensionnelles de pierres precieuses et procede d'utilisation correspondant
US20060066877A1 (en) * 2004-09-30 2006-03-30 Daniel Benzano Capture and display of image of three-dimensional object
US20080231833A1 (en) * 2005-08-22 2008-09-25 Galatea Ltd. Method for evaluation of a gemstone
US20120007971A1 (en) * 2009-03-11 2012-01-12 Dsee Imaging Ltd. Methods and systems of imaging cut stones
US20120274751A1 (en) * 2009-11-03 2012-11-01 De Beers Centenary AG Inclusion detection in polished gemstones
US20130010280A1 (en) * 2011-07-05 2013-01-10 Gemological Appraisal Association, Inc. Gemstone registration system
US20140107986A1 (en) * 2007-11-27 2014-04-17 Ideal-Scope Pty. Ltd. Method and System for Improved Optical Modeling of Gemstones
US20160290930A1 (en) * 2015-03-30 2016-10-06 Gemological Institute Of America, Inc. Apparatus and method for assessing optical quality of gemstones

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3392926B2 (ja) * 1993-04-19 2003-03-31 オリンパス光学工業株式会社 宝石鑑定装置及びその方法
US5515157A (en) * 1993-10-18 1996-05-07 Can; Hanna Gem viewing and manipulation apparatus
GB2358541A (en) * 1999-10-29 2001-07-25 Diamond And Jewelry 4 U Ltd Gemstone image capture system
EP1211503A1 (fr) * 2000-12-04 2002-06-05 Diamcad Procédé et dispositif pour la localisation d'inclusions dans une pierre de diamant
WO2004028288A2 (fr) * 2002-09-27 2004-04-08 Dialit Ltd. Systeme de formation d'images tridimensionnelles de pierres precieuses et procede d'utilisation correspondant
US20060066877A1 (en) * 2004-09-30 2006-03-30 Daniel Benzano Capture and display of image of three-dimensional object
US20080231833A1 (en) * 2005-08-22 2008-09-25 Galatea Ltd. Method for evaluation of a gemstone
US20140107986A1 (en) * 2007-11-27 2014-04-17 Ideal-Scope Pty. Ltd. Method and System for Improved Optical Modeling of Gemstones
US20120007971A1 (en) * 2009-03-11 2012-01-12 Dsee Imaging Ltd. Methods and systems of imaging cut stones
US20120274751A1 (en) * 2009-11-03 2012-11-01 De Beers Centenary AG Inclusion detection in polished gemstones
US20130010280A1 (en) * 2011-07-05 2013-01-10 Gemological Appraisal Association, Inc. Gemstone registration system
US20160290930A1 (en) * 2015-03-30 2016-10-06 Gemological Institute Of America, Inc. Apparatus and method for assessing optical quality of gemstones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111696065A (zh) * 2020-06-16 2020-09-22 桂林电子科技大学 一种基于图像处理的宝石图像高光去除方法
CN111696065B (zh) * 2020-06-16 2023-06-02 桂林电子科技大学 一种基于图像处理的宝石图像高光去除方法
CN117092114A (zh) * 2023-10-16 2023-11-21 苏州德机自动化科技有限公司 一种基于ai的外观检测系统
CN117092114B (zh) * 2023-10-16 2023-12-29 苏州德机自动化科技有限公司 一种基于ai的外观检测系统

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