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Process and system for diamond clarity measurement

一种钻石、工艺的技术，应用在探知宝石的净度领域，能够解决难钻石提供可重复性等问题

Pending Publication Date: 2021-02-02
GOLDWAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Therefore, even for trained and experienced professional gemologists, such gemologists still have difficulty providing reproducibility in the clarity assessment of diamonds

Method used

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  • Process and system for diamond clarity measurement
  • Process and system for diamond clarity measurement
  • Process and system for diamond clarity measurement

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Experimental program
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Embodiment Construction

[0067] The present inventors have identified shortcomings in the manner in which clarity grading of diamonds is performed, and having identified the problems of the prior art, have provided systems and processes that overcome the problems of the prior art and provide a more consistent and reliable system and craft.

[0068] 1. this invention

[0069] Embodiments of the present invention are as follows:

[0070] 1.1 preprocessing

[0071] In an embodiment of the present invention, the preprocessing of the trained neural network clarity grading process includes several steps. Preprocessing is applied to photos that have a different depth of focus relative to the diamond. The preprocessing steps include:

[0072] (i) HDR (High Dynamic Range)

[0073] Gemstones' inclusions, otherwise known as imperfections or inhomogeneities, come in varying sizes and colors. Therefore, different inclusions have different visibility under the camera view.

[0074] Some smaller inclusion...

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PUM

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Abstract

The invention relates to a process and a system for diamond clarity measurement. A process operable using a computerized system includes the steps of (i) acquiring via an optical image acquisition device one or more plurality of axial view images of a diamond with different focus depths, (ii) combining the plurality of axial views to form one or more single optical images; (iii) in a pre-trained neural network, providing a regressive value associated with the clarity grade of said diamond based on the one or more single images acquired during step (i), wherein the pre-trained neural network has been pre-trained utilizing one or more single optical images acquired from a plurality of diamonds each having a preassigned clarity grade assigned, and the one or more single optical images acquired from the plurality of diamonds are provided by the same process of step (i); and (iv) from an output module, providing a clarity grade to the diamond of (i) by correlating the regression value from(ii) to a clarity grade.

Description

technical field [0001] The present invention relates to a system and process for ascertaining the clarity of gemstones. More specifically, the present invention provides a system and process for ascertaining the clarity of a diamond. Background technique [0002] It is well known that diamonds are a key component utilized in many luxury items, especially jewelry items, and can be of great value. [0003] The value of a diamond is determined by several physical properties of the diamond and there are four globally recognized criteria utilized to assess the quality of a diamond, commonly referred to as the 4Cs, namely Clarity, Color, Cut and Carat Weight. [0004] As an example, the Gemological Institute of America (GIA) has clarity grades as shown below: [0005] [0006] In order to evaluate a diamond's clarity, it is necessary to determine the amount, size and location of flaws within the gemstone. [0007] Different imperfections can form in or on a diamond, ranging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00G06N3/04G06N3/08
CPCG06T7/0004G06N3/08G06T2207/20208G06T2207/30108G06T2207/20081G06T2207/20084G06N3/045G06T5/80G06T5/92G01N21/87G06T7/90G01N2201/062G06T7/0002
Inventor 许冠中郑家荣邓詠芝
Owner GOLDWAY TECH