CN107238409B - Method for identifying gem identity and identification system thereof - Google Patents
Method for identifying gem identity and identification system thereof Download PDFInfo
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- CN107238409B CN107238409B CN201710311953.3A CN201710311953A CN107238409B CN 107238409 B CN107238409 B CN 107238409B CN 201710311953 A CN201710311953 A CN 201710311953A CN 107238409 B CN107238409 B CN 107238409B
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Abstract
The present invention relates to a method for identifying the identity of a gemstone, comprising: after the gem is processed, measuring the gem to obtain the weight parameter of the gem and the geometric structure characteristic parameter of the gem, and storing the parameter information and the gem category into a gem identity recognition database; measuring characteristic parameters of the gemstone with the identity to be identified; and comparing the parameters of the gem with the identity to be identified with the characteristic parameters of the gem in the gem identity identification database to obtain a comparison result. The database is established when the gemstone is formed, the weight and the geometric structural characteristics of the gemstone are measured when the identity of the gemstone needs to be identified, and the weight and the geometric structural characteristics are compared with the data in the gemstone database to obtain the identification result of the identity of the gemstone. The method can not damage the gems, well protects the gems, can conveniently obtain the real and unique identity of the gems, and has very important significance in other activities such as gem appreciation, transaction and the like.
Description
Technical Field
The invention relates to the field of gem identification, in particular to a method for identifying the identity of a gem and an identification system thereof.
Background
The gem refers to stone or mineral materials which can meet the requirements of jewelry after being cut and polished. The gem has beautiful color and high hardness and does not change under the action of atmosphere and chemicals. The gem is the most beautiful and precious stone in minerals, has bright color, glittering and translucent texture, brilliant luster, hardness and durability, and rare occurrence, and is a natural mineral crystal which can be used for manufacturing jewelry and other purposes, such as diamond, crystal, emerald, ruby, sapphire, emerald (alexandrite, cat eye), alexandrite and the like; there are also a few natural monomineral aggregates, such as ice color chalcedony, opal.
Because of scarcity and high price of the precious stones, most of the precious stones after being produced are provided with identification certificates, and the precious stones are provided by professional detection institutions certified by national certification authorities, so that the precious stones are an important basis for consumers to feel relieved about consumption.
The detection mechanism provides identification certificates with different formats according to different varieties of jewelry, such as a diamond grading certificate, a mosaic diamond grading certificate, a jewelry jade identification certificate, a precious metal ornament purity inspection certificate and the like, but the main contents are almost the same, generally, detection numbers, ornament names, total weight including inlays and carriers, photos of ornaments, appraiser names, appraisal dates and qualitative or quantitative descriptions of characteristics of different varieties of ornaments are marked, and the certificates are marked with the names of the identification mechanism, the marks of approval authentication and the standards of jewelry jade discrimination and identification. Such a certificate may serve as an identification of the article, with legal force.
However, the paper certificate is easy to lose and even to be counterfeited, and when the gemstones are sold for the second time, the identification of the gemstones is relatively difficult to be convincing only by the certificate.
Chinese patent CN 106525746a jewel tester and jewel identification method, discloses an apparatus and method for distinguishing natural diamond from synthetic diamond by using the difference of infrared reflection degree between natural diamond and synthetic diamond, but the apparatus and method are only used for identifying true and false diamond, but can not make accurate judgment on the uniqueness of diamond identity.
Chinese patent CN 1264445C laser scribing system for gem and scribing identification method discloses a marking and identification method for diamond and facet gem, which mainly relies on using cold shock lithography character string, Logo or mark (as shown in fig. 1 and 2) at a certain position (usually waist) on the surface of diamond or gem to make diamond and facet gem form unique "fingerprint", also a commonly used method at present. However, such "fingerprints" are susceptible to tampering or copying (cloning) and thus the uniqueness of the diamond identity cannot be determined.
Disclosure of Invention
In view of the above-mentioned deficiencies in the prior art, the present invention provides a method and system for identifying a gemstone, which enable unique identification of the gemstone, avoiding "falsifying" of a simulated gemstone.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for identifying the identity of a gemstone, comprising the steps of:
(1) after the processing of the gem is finished, measuring the gem to obtain the weight parameter of the gem and the geometric structure characteristic parameter of the gem, and storing the measured parameter information and the gem category into a gem identity identification database;
(2) measuring the weight parameter of the gem of the identity to be identified and the geometric structure characteristic parameter of the gem;
(3) comparing the parameters of the gem with the to-be-recognized identity with the weight parameters and the geometric structure characteristic parameters of the gem in the gem identity recognition database, and if the measured gem parameters of the to-be-recognized identity are consistent with the parameter values prestored in the gem identity database, uniquely confirming the identity of the to-be-recognized gem; if one of the measured parameters of the gemstone of which the identity is to be recognized is not consistent with the pre-stored parameter value in the database of gemstone identities, the identity verification of the gemstone to be recognized may be stopped.
It is preferable that: the geometrical characteristic parameters comprise the geometrical characteristic parameters of the faceted gem and the structural characteristic parameters of the plain gem; wherein the geometric characteristic parameters of the faceted gemstone comprise the perimeter of each facet of the gemstone, the area of each facet, the angle between each facet and the girdle, the girdle waveform of the gemstone, the cut of the gemstone, the length, width and height of the gemstone, and the 3D model of the gemstone; the structural characteristic parameters of a plain gemstone include the curvature of the gemstone surface, the cut of the gemstone, the surface area of the gemstone, the length, width and height of the gemstone, and a 3D model of the gemstone.
It is preferable that: the gem identification database comprises a first database for pre-storing the weight parameter and the geometric structure characteristic parameter information of the facet gem and a second database for pre-storing the weight parameter and the geometric structure characteristic parameter information of the plain gem;
wherein the first database comprises: the device comprises a first sub-database for pre-storing length, width and height information of facet precious stones, a second sub-database for pre-storing weight information of facet precious stones, a third sub-database for pre-storing perimeter information of facet precious stones, a fourth sub-database for pre-storing area information of facet precious stones, a fifth sub-database for pre-storing angle information of facet precious stones and waists, a sixth sub-database for pre-storing waist waveform information of facet precious stones, a seventh sub-database for pre-storing facet precious stone types and an eighth sub-database for pre-storing facet precious stone cuts;
the second database includes: the device comprises a first sub-database for pre-storing length, width and height information of a plain gem, a second sub-database for pre-storing weight information of the plain gem, a third sub-database for pre-storing surface radian information of the plain gem, a fourth sub-database for pre-storing surface area information of the plain gem, a fifth sub-database for pre-storing the type of the plain gem and a sixth sub-database for pre-storing a cut type of the plain gem.
It is preferable that: when data comparison is carried out in the step (3), firstly, judging the category of the gem; and then measuring the corresponding weight parameters and geometrical structure characteristic parameters according to different jewel types.
It is preferable that: in the step, firstly, judging the type of the gem, specifically, determining whether the gem is a facet gem or a plain gem, and when the gem is determined to be the plain gem, further performing comparison judgment according to the type of the gem, the cut type of the gem, the length, width and height of the gem, the weight of the gem, the radian of the surface of the gem, the surface area of the gem and a 3D model of the gem, and finally determining the identity of the gem; when the gem is determined to be the facet gem, the identity of the gem is finally determined by further carrying out comparison and judgment according to the type of the gem, the cut type of the gem, the length, the width and the height of the gem, the weight of the gem, the perimeter of each facet of the gem, the area of each facet of the gem, the angle between each facet of the gem and the waist surface, the waist waveform of the gem and the 3D model of the gem.
It is preferable that: after confirming the category of the gem of the identity to be identified, measuring the weight and the geometrical structure characteristics of the gem through a measuring instrument, correspondingly selecting a first database or a second database which is suitable for the category of the gem from the databases, and comparing and analyzing the measured weight and the geometrical structure characteristics of the gem with the parameter information in each sub-database in the selected first database or the selected second database.
It is preferable that: after the category of the gem is determined, a plurality of gem parameters of the gem with the identity to be identified are correspondingly selected, the plurality of gem parameters are compared with corresponding parameter information prestored in a gem identity identification database for calculation, and when the unique corresponding gem data is found in the gem identity identification database, the calculation is stopped to obtain the identity of the gem with the identity to be identified; when the unique corresponding gem data cannot be found in the database, obtaining a sub-database I containing the gem with the identity to be identified, selecting a plurality of gem parameters of the identity to be identified again, carrying out comparison calculation in the sub-database I, and when the unique corresponding gem data is found in the sub-database I, stopping calculation to obtain the identity of the gem with the identity to be identified; when the unique corresponding gem data cannot be found in the sub-database I, obtaining a sub-database II containing the gem with the identity to be identified, selecting a plurality of items of gem data with the identity to be identified again, and performing comparison calculation in the sub-database II; repeating the above process until the unique corresponding gem data is found in the sub-database N, stopping calculation, and obtaining the identity of the gem with the identity to be identified; and when the unique corresponding gem data cannot be found, stopping calculation, and failing to obtain the identity of the gem with the identity to be identified.
The present invention also provides a system for identifying the identity of a gemstone, comprising at least:
a high precision balance for determining the weight of the gemstone;
a measuring instrument for determining geometrical characteristics of the gemstone;
the processing system is used for comparing the measured weight parameter and the geometric structure characteristic parameter of the gem with the preset gem weight parameter and geometric structure characteristic parameter information in the gem identity recognition database to obtain the gem identity;
wherein, processing system includes:
the control module is used for controlling the system to operate;
the judgment analysis module is in communication connection with the control module and is used for comparing the gem data of the identity to be identified with the gem data in the gem identity identification database;
the cache module is in communication connection with the control module and is used for temporarily storing the measured gem data of the identity to be determined and a result obtained after comparison;
the storage module is in communication connection with the control module and is used for storing the comparison record of the gem data of the identity to be determined and the data in the gem database;
the communication module is in communication connection with the control module and is used for calling the gem data in the gem identity recognition database;
the input module is in communication connection with the control module and is used for selectively inputting the gem data of the identity to be determined, selecting a database to be searched and setting the judgment and analysis module;
and the display module is in communication connection with the control module and is used for displaying data.
It is preferable that: the data in the gem database are stored in a local storage device, the local storage device is in communication connection with the judgment and analysis module, and the local storage device is provided with a communication module which updates the gem database on the internet.
It is preferable that: the gem data in the gem database is stored in cloud computing and is interacted with the internet, and the judgment and analysis module is provided with a communication module which is interacted with the internet.
The invention has the beneficial effects that: the method comprises the steps of establishing a database when the processing of the gem is finished, measuring the weight and the geometrical structural characteristics of the gem when the identity of the gem needs to be identified, and comparing the weight and the geometrical structural characteristics with data in the gem database through calculation to obtain the identification result of the unique identity of the gem. The method can not damage the gems, well protects the gems, can conveniently obtain the real and unique identity of the gems, and has very important significance in other activities such as gem appreciation, transaction and the like.
Drawings
FIG. 1 is a drawing of background art FIG. one;
FIG. 2 is a drawing of background art FIG. two;
FIG. 3 is a schematic view of a crown facet of a diamond according to an embodiment of the present invention;
FIG. 4 is a schematic view of a pavilion facet of a diamond according to an embodiment of the present invention;
FIG. 5 is a photograph of a periscopic multi-degree-of-freedom positioning tool angle measurement microscope employed in the present invention;
FIG. 6 is a first schematic diagram of measured data of facets in an embodiment of the present invention;
FIG. 7 is a second graph of measured facet data for an embodiment of the present invention;
FIG. 8 is a schematic diagram of a waist waveform measured in an example of application of the present invention;
FIG. 9 is a flow chart of the invention;
FIG. 10 is a flow chart of data alignment according to the present invention.
FIG. 11 is a 3D model one of the gemstone of the present invention;
FIG. 12 is a second 3D model of a gemstone according to the present invention;
FIG. 13 is a schematic diagram of the processing system of the present invention.
In the figure, 1-communication module; 2-judging and analyzing module; 3-a display module; 4-an input module; 5-a storage module; 6-a cache module; 7-control module.
Detailed Description
The present invention is further illustrated by the following specific examples.
The present invention relates to a method for identifying the identity of a gemstone, as shown in fig. 9, comprising the steps of:
a method for identifying the identity of a gemstone, comprising the steps of:
(1) after the processing of the gem is finished, measuring the gem to obtain the weight parameter of the gem and the geometric structure characteristic parameter of the gem, and storing the measured parameter information and the gem category into a gem identity identification database;
(2) measuring the weight parameter of the gem of the identity to be identified and the geometric structure characteristic parameter of the gem;
(3) comparing the parameters of the gem with the to-be-recognized identity with the weight parameters and the geometric structure characteristic parameters of the gem in the gem identity recognition database, and if the measured gem parameters of the to-be-recognized identity are consistent with the parameter values prestored in the gem identity database, uniquely confirming the identity of the to-be-recognized gem; if one of the measured parameters of the gemstone of which the identity is to be recognized is not consistent with the pre-stored parameter value in the database of gemstone identities, the identity verification of the gemstone to be recognized may be stopped.
Further, the geometric characteristic parameters comprise the geometric characteristic parameters of the faceted gem and the structural characteristic parameters of the plain gem; wherein the geometric characteristic parameters of the faceted gemstone comprise the perimeter of each facet of the gemstone, the area of each facet, the angle between each facet and the girdle, the girdle waveform of the gemstone, the cut of the gemstone, the length, width and height of the gemstone, and the 3D model of the gemstone; the structural characteristic parameters of a plain gemstone include the curvature of the gemstone surface, the gemstone surface area, the gemstone cut, the gemstone length, width, and height, and the gemstone 3D model.
The processing system involved in the method can also calculate the volume of the gemstone according to the measured geometric characteristics, or directly obtain the volume of the gemstone through a measuring instrument.
Further, the gem identification database comprises a first database for pre-storing the weight parameter and the geometric structure characteristic parameter information of the facet gem and a second database for pre-storing the weight parameter and the geometric structure characteristic parameter information of the plain gem;
wherein the first database comprises: the device comprises a first sub-database for pre-storing length, width and height information of facet precious stones, a second sub-database for pre-storing weight information of facet precious stones, a third sub-database for pre-storing perimeter information of facet precious stones, a fourth sub-database for pre-storing area information of facet precious stones, a fifth sub-database for pre-storing angle information of facet precious stones and waists, a sixth sub-database for pre-storing waist waveform information of facet precious stones, a seventh sub-database for pre-storing facet precious stone types and an eighth sub-database for pre-storing facet precious stone cuts;
the second database includes: the device comprises a first sub-database for pre-storing length, width and height information of a plain gem, a second sub-database for pre-storing weight information of the plain gem, a third sub-database for pre-storing surface radian information of the plain gem, a fourth sub-database for pre-storing surface area information of the plain gem, a fifth sub-database for pre-storing the type of the plain gem and a sixth sub-database for pre-storing a cut type of the plain gem.
Further, when data comparison is carried out in the step (3), the category of the gem is judged firstly; and then measuring the corresponding weight parameters and geometrical structure characteristic parameters according to different jewel types.
Further, in the step, "judging the category of the gemstone" firstly, specifically, determining whether the gemstone is a faceted gemstone or a plain gemstone, and when determining that the gemstone is a plain gemstone, further performing comparison judgment according to the length, width and height of the gemstone, the weight of the gemstone, the radian of the surface of the gemstone, the cut type of the gemstone, the surface area of the gemstone and the 3D model of the gemstone, and finally determining the identity of the gemstone; when the gem is determined to be a facet gem, the identity of the gem is finally determined by further carrying out comparison and judgment according to the length, width and height of the gem, the cut shape of the gem, the weight of the gem, the perimeter of each facet of the gem, the area of each facet of the gem, the angle between each facet of the gem and the waist surface, the waist waveform of the gem and the 3D model of the gem.
Further, after the category of the gemstone with the identity to be identified is confirmed, the weight and the geometric structural characteristics of the gemstone are measured through the measuring instrument, a first database or a second database which is suitable for the category of the gemstone is correspondingly selected from the databases, and the measured weight and the geometric structural characteristics of the gemstone are compared with parameter information in each sub-database in the selected first database or the selected second database for analysis.
Further, as shown in fig. 10, after the category of the gemstone is determined, a plurality of gemstone parameters of the gemstone with the identity to be recognized are selected correspondingly, the plurality of gemstone parameters are compared with corresponding parameter information prestored in the gemstone identity recognition database for calculation, and when the unique corresponding gemstone data is found in the gemstone identity recognition database, the calculation is stopped, so as to obtain the identity of the gemstone with the identity to be recognized; when the unique corresponding gem data cannot be found in the database, obtaining a sub-database I containing the gem with the identity to be identified, selecting a plurality of gem parameters of the identity to be identified again, carrying out comparison calculation in the sub-database I, and when the unique corresponding gem data is found in the sub-database I, stopping calculation to obtain the identity of the gem with the identity to be identified; when the unique corresponding gem data cannot be found in the sub-database I, obtaining a sub-database II containing the gem with the identity to be identified, selecting a plurality of items of gem data with the identity to be identified again, and performing comparison calculation in the sub-database II; repeating the above process until the unique corresponding gem data is found in the sub-database N, stopping calculation, and obtaining the identity of the gem with the identity to be identified; and when the unique corresponding gem data cannot be found, stopping calculation, and failing to obtain the identity of the gem with the identity to be identified.
The present invention also provides a system for identifying the identity of a gemstone, comprising at least:
a high precision balance for determining the weight of the gemstone;
a measuring instrument for determining geometrical characteristics of the gemstone;
the processing system is used for comparing the measured weight parameter and the geometric structure characteristic parameter of the gem with the preset gem weight parameter and geometric structure characteristic parameter information in the gem identity recognition database to obtain the gem identity;
wherein, the processing system shown in fig. 13 includes:
the control module is used for controlling the system to operate;
the judgment analysis module is in communication connection with the control module and is used for comparing the gem data of the identity to be identified with the gem data in the gem identity identification database;
the cache module is in communication connection with the control module and is used for temporarily storing the measured gem data of the identity to be determined and a result obtained after comparison;
the storage module is in communication connection with the control module and is used for storing the comparison record of the gem data of the identity to be determined and the data in the gem database;
the communication module is in communication connection with the control module and is used for calling the gem data in the gem identity recognition database;
the input module is in communication connection with the control module and is used for selectively inputting the gem data of the identity to be determined, selecting a database to be searched and setting the judgment and analysis module;
and the display module is in communication connection with the control module and is used for displaying data.
Furthermore, the data in the gem database is stored in a local storage device, the local storage device is in communication connection with the judgment and analysis module, and the local storage device is provided with a communication module for updating the gem database on the internet.
Further, the gem data in the gem database are stored in cloud computing and are interacted with the internet, and the judgment and analysis module is provided with a communication module which is interacted with the internet.
The processing system can be integrated with the measuring instrument, and data measured by the measuring instrument can be transmitted to the processing equipment provided with the processing system through the data transmission equipment.
Because no measuring instrument specially used for measuring the geometrical structural characteristics of the gem exists at present, the measuring instrument can adopt a periscopic multi-degree-of-freedom positioning tool angle measuring microscope (as shown in figure 5) or other similar instruments, as long as the data of the geometrical structural characteristics of the gem can be obtained. For example, faceted gemstones contain many facets, as shown in FIGS. 3-4. The periscopic multi-degree-of-freedom positioning tool angle measuring microscope can be used for measuring the circumference of each facet, the area of each facet, the angle between the facet and the waist surface and the waist waveform of the faceted gem, and as shown in fig. 6-8, the length, the width and the height of the gem can be measured by a vernier caliper or other tools. Additionally, in the form of a 3D scan, a 3D model of the stone can be obtained, for example as shown in FIGS. 11-12, where the faceted stone shown in FIG. 12 has a diameter of 4.780mm and a height of 2.987mm, with a crown height of 0.761mm, a girdle thickness of 0.162mm, and a pavilion height of 2.064 mm.
In practice, it may be determined whether the gemstone is a faceted gemstone or a plain gemstone, and then the other parameters may be determined. The selection may be made by an input device, as the skilled person can determine the type of gemstone and the shape of the gemstone by visual inspection. When the kind of the gem cannot be determined, the kind of the gem is not selected; when the shape of the gemstone cannot be determined, then the shape of the gemstone is not selected; when both of them cannot be determined, they are not selected.
A plurality of indexes which are high in degree of distinction and easy to judge, such as the length, the width and the height of the jewel, the weight of the jewel and the total volume of the jewel, are input through input equipment, the index is a sub-database I, when the jewel data in the sub-database I are compared, the only corresponding jewel data can be found, calculation is stopped, and the identity of the jewel of the identity to be identified is obtained. When the unique corresponding gem data can not be found in the database, parameters of other gems, such as the number of facets, the perimeter or area of one or two facets, or the angle between one facet and the waist surface, are input and compared again. Gradually reducing the range of the database, and finally finding out a piece of data in the sub-database N, which is the same as the diamond data to be identified, until the unique corresponding gem data is found, finishing the work of gem identity identification.
Of course, the obtained gemstone data can also be directly compared with the data in the database.
In order to speed up the process of searching and comparing data and improve the speed of comparison calculation, the jewels can be classified according to shape, weight, type, total volume and the like, and then the data can be called from the sub-database for comparison, so that the calculation time is saved. In particular, the gemstone data in the database may be divided into a faceted gemstone database and a plain gemstone database.
The database of the faceted gem may include the following sub-databases: an external dimension database (including the length, width and height of the gemstone), a shape classification database, a weight classification database, a gemstone type classification database, and a gemstone total volume classification database. Since the data volume of the perimeter of a facet and the area of a facet is particularly large, for example, a diamond with 58 facets, which has data of 58 facets, is not suitable for subdividing the database, but can be classified into a database of the number of facets, for example, a database of 58, 81, 101, 111, etc. facets. The waist waveform of a gemstone is also relatively temporarily difficult to classify.
The plain gemstone database may include several sub-databases: an external dimension database (including the length, width and height of the gemstone), a shape classification database, a weight classification database, a gemstone type classification database, and a gemstone total volume classification database. Of course, the curvature of the gemstone surface, the surface area of the gemstone, may also form the classification database.
Wherein the shape classification database may be re-classified according to the shape of the gemstone, such as circular, square, oval, heart, drop, horseeye, and the like.
The weight classification database may be reclassified according to the weight class of the stone, for example, for diamonds, the classification may be according to the atmosphere of the diamond community, a broken diamond class below 0.05ct, a small diamond class between 0.05ct and 0.22ct, a medium diamond class between 0.23ct and 1ct, a large diamond class above 1ct, a large diamond class between 10.8ct and 50ct, and a nominated diamond class above 50 ct. Other gemstones may be classified according to other weight grades.
The gemstone species classification database may be reclassified according to the species of the gemstone, such as diamond, ruby, sapphire, emerald, sapphire, spinel, etc.
The gemstone total volume classification database can be reclassified according to the total volume of the gemstone, and can be classified according to weight.
Application examples
By way of example, in the case of diamonds, as shown in FIGS. 3-4, a standard cut round diamond has 58 facets and if there are no small facets on the apex, 57 facets, these 58 or 57 facets have 7 shapes. In theory, the positions and angles of the facets are fixed, but in the actual processing, the size (side length), surface area, and spatial angle of each facet deviate from the ideal state to some extent due to the influence of factors such as the shape of the diamond blank material, the structure of the diamond blank material, and the skill of the operator during processing, thereby forming individual difference characteristics. For a plain gemstone, the curvature of the gemstone surface, in combination with other geometric features, also has individual difference characteristics. This is the theoretical basis for the present invention to determine the uniqueness of a gemstone by its own characteristics.
Placing a diamond to be identified in a periscopic multi-degree-of-freedom positioning tool angle measuring microscope (as shown in FIG. 5)) In the above method, the perimeter of each facet, the area of each facet, the angle between each facet and the girdle, and the girdle waveform of the diamond were measured by a periscopic multi-degree-of-freedom positioning tool angle measuring microscope (see fig. 6 to 8). The area of a facet of the diamond to be measured is 1.3244mm2The circumference is 4.7388 mm; the other facet has an area of 1.4350mm2The circumference is 7.3539 mm. Because the precision is very good, four digits after the decimal point of precision can improve the accuracy of the uniqueness judgment of the diamond.
The weight of the diamond was obtained by a high precision balance. The length, width and height of the gem are obtained by a vernier caliper. The surface curvature of the stone may be obtained by other means.
The measuring device is connected with the controller, and measured data are directly transmitted to the controller or can be manually input into the controller.
The gem is judged to be a facet gem through visual observation, the gem type is diamond, the gem shape is circular, according to the measured weight of the gem, or the volume of a diamond can be increased, and a sub database I is obtained through the intersection of the 5 sub databases. And inputting other gem data, such as the perimeter or area of a certain facet or the angle between the facet and the waist, and calculating and comparing.
Since the subdatabase is difficult to establish by the waist waveform of the diamond, the waist waveform can be directly used as a parameter for comparison. However, since the shape of the waist waveform is difficult in the comparison process, the shape can be selected later.
In the actual process, according to the data amount in the first sub-database, if the data amount is large, more data of a plurality of jewels can be input, and if the data amount is small, one or two data can be input.
The real identity of the gemstone is obtained by comparing the measured gemstone data with the data in the database, the method is stable and reliable, the gemstone is not damaged, the value of the gemstone is not influenced, and the method is simple and convenient to operate.
Claims (5)
1. A method for identifying the identity of a gemstone, comprising: the method comprises the following steps:
(1) after the processing of the gem is finished, measuring the gem to obtain the weight parameter of the gem and the geometric structure characteristic parameter of the gem, and storing the measured parameter information and the gem category into a gem identity identification database;
(2) measuring the weight parameter of the gem of the identity to be identified and the geometric structure characteristic parameter of the gem;
(3) comparing the parameters of the gem with the to-be-recognized identity with the weight parameters and the geometric structure characteristic parameters of the gem in the gem identity recognition database, and if the measured gem parameters of the to-be-recognized identity are consistent with the parameter values prestored in the gem identity database, uniquely confirming the identity of the to-be-recognized gem; if one of the measured parameters of the gemstone with the identity to be identified is inconsistent with the parameter value prestored in the gemstone identity database, the identity confirmation of the gemstone to be identified can be stopped;
the geometric characteristic parameters comprise the geometric characteristic parameters of a faceted gem and the structural characteristic parameters of a plain gem; the geometrical characteristic parameters of the faceted gemstone comprise the perimeter of each facet of the gemstone, the area of each facet, the angle between each facet and the girdle, the girdle of the gemstone, the cut of the gemstone, the length, width and height of the gemstone, and the 3D model of the gemstone; the structural characteristic parameters of the plain gem comprise the radian of the surface of the gem, the surface area of the gem, the cut type of the gem, the length, width and height of the gem and a 3D model of the gem;
the gem identification database comprises a first database for pre-storing the weight parameter and the geometric structure characteristic parameter information of the facet gem and a second database for pre-storing the weight parameter and the geometric structure characteristic parameter information of the plain gem;
the first database includes: the device comprises a first sub-database for pre-storing length, width and height information of facet precious stones, a second sub-database for pre-storing weight information of the facet precious stones, a third sub-database for pre-storing perimeter information of each facet of the facet precious stones, a fourth sub-database for pre-storing area information of each facet of the facet precious stones, a fifth sub-database for pre-storing angle information of each facet of the facet precious stones and a girdle surface, a sixth sub-database for pre-storing girdle waveform information of the facet precious stones, a seventh sub-database for pre-storing gem types and an eighth sub-database for pre-storing gem types;
the second database includes: the device comprises a first sub-database, a second sub-database, a third sub-database, a fourth sub-database, a fifth sub-database and a sixth sub-database, wherein the first sub-database is used for pre-storing information about the length, the width and the height of a plain gem, the second sub-database is used for pre-storing information about the weight of the plain gem, the third sub-database is used for pre-storing information about the surface radian of the plain gem, the fourth sub-database is used for pre-storing information about the surface area of the plain gem, the fifth sub;
when data comparison is carried out in the step (3), firstly, judging the category of the gem; secondly, measuring corresponding weight parameters and geometric structure characteristic parameters of the jewels according to different jewel types;
after confirming the category of the gem of the identity to be identified, measuring the weight and the geometric structural characteristics of the gem through a measuring instrument, correspondingly selecting a first database or a second database which is suitable for the category of the gem from the databases, and comparing and analyzing the measured weight and the geometric structural characteristics of the gem with parameter information in each sub-database in the selected first database or the selected second database;
after the category of the gem is determined, a plurality of gem parameters of the gem with the identity to be identified are correspondingly selected, the plurality of gem parameters are compared with corresponding parameter information prestored in a gem identity identification database for calculation, and when the unique corresponding gem data is found in the gem identity identification database, the calculation is stopped to obtain the identity of the gem with the identity to be identified; when the unique corresponding gem data cannot be found in the database, obtaining a sub-database I containing the gem with the identity to be identified, selecting a plurality of gem parameters of the identity to be identified again, carrying out comparison calculation in the sub-database I, and when the unique corresponding gem data is found in the sub-database I, stopping calculation to obtain the identity of the gem with the identity to be identified; when the unique corresponding gem data cannot be found in the sub-database I, obtaining a sub-database II containing the gem with the identity to be identified, selecting a plurality of items of gem data with the identity to be identified again, and performing comparison calculation in the sub-database II; repeating the above process until the unique corresponding gem data is found in the sub-database N, stopping calculation, and obtaining the identity of the gem with the identity to be identified; and when the unique corresponding gem data cannot be found, stopping calculation, and failing to obtain the identity of the gem with the identity to be identified.
2. A method for identifying the identity of a gemstone according to claim 1, wherein: in the step, firstly, judging the category of the gem, specifically, determining whether the gem is a facet gem or a plain gem, and when the gem is determined to be the plain gem, then, further carrying out comparison judgment according to the length, width and height of the gem, the weight of the gem, the radian of the surface of the gem, the cut type of the gem, the surface area of the gem and a 3D model of the gem, and finally determining the identity of the gem; when the gem is determined to be a facet gem, the identity of the gem is finally determined by further carrying out comparison and judgment according to the length, width and height of the gem, the cut shape of the gem, the weight of the gem, the perimeter of each facet of the gem, the area of each facet of the gem, the angle between each facet of the gem and the waist surface, the waist waveform of the gem and the 3D model of the gem.
3. A system for identifying the identity of a gemstone, comprising: the system for use with a method for identifying the identity of a gemstone according to claim 1 or 2, the system comprising at least:
a high precision balance for determining the weight of the gemstone;
a measuring instrument for determining geometrical characteristics of the gemstone;
the processing system is used for comparing the measured weight parameter and the geometric structure characteristic parameter of the gem with the preset gem weight parameter and geometric structure characteristic parameter information in the gem identity recognition database to obtain the gem identity;
the processing system comprises:
the control module is used for controlling the system to operate;
the judgment analysis module is in communication connection with the control module and is used for comparing the gem data of the identity to be identified with the gem data in the gem identity identification database;
the cache module is in communication connection with the control module and is used for temporarily storing the measured gem data of the identity to be determined and a result obtained after comparison;
the storage module is in communication connection with the control module and is used for storing the comparison record of the gem data of the identity to be determined and the data in the gem database;
the communication module is in communication connection with the control module and is used for calling the gem data in the gem identity recognition database;
the input module is in communication connection with the control module and is used for selectively inputting the gem data of the identity to be determined, selecting a database to be searched and setting the judgment and analysis module;
and the display module is in communication connection with the control module and is used for displaying data.
4. A system for identifying the identity of a gemstone according to claim 3, wherein: the data in the gem database are stored in a local storage device, the storage device is in communication connection with the judgment and analysis module, and the local storage device is provided with a communication module for updating the gem database on the internet.
5. A system for identifying the identity of a gemstone according to claim 3, wherein: the gem data in the gem database are stored in cloud computing and are interacted with the internet, and the judgment and analysis module is provided with a communication module which is interacted with the internet.
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| CN201710311953.3A CN107238409B (en) | 2017-05-05 | 2017-05-05 | Method for identifying gem identity and identification system thereof |
| PCT/CN2017/088931 WO2018201580A1 (en) | 2017-05-05 | 2017-06-19 | Method for recognizing identity of gemstone, and recognition system thereof |
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| CN201710311953.3A CN107238409B (en) | 2017-05-05 | 2017-05-05 | Method for identifying gem identity and identification system thereof |
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| EP3703920B1 (en) * | 2017-12-22 | 2022-02-02 | Sahajanand Technologies Private Limited | Cutting machine for processing a gemstone, method of processing a gemstone and computer readable medium |
| CN109099867A (en) * | 2018-06-26 | 2018-12-28 | 无锡新吉凯氏测量技术有限公司 | A kind of jewel certification and identifying system and method based on geometric shape information |
| CN110836963B (en) * | 2018-08-18 | 2022-11-01 | 王承砚 | Method and device for measuring quality of emerald finished product |
| CN109682414A (en) * | 2019-02-28 | 2019-04-26 | 襄阳爱默思智能检测装备有限公司 | A kind of characteristic present of jewel identity and recognition methods |
| CN110751083B (en) * | 2019-10-17 | 2023-04-18 | 曹轶 | Gem image feature identification method based on homomorphic encryption protection |
| CN113129035A (en) * | 2021-04-26 | 2021-07-16 | 北京金玖银玖数字科技有限公司 | Gold product management method, device and system |
| CN114910121B (en) * | 2022-04-08 | 2024-04-26 | 广西诸宝科技开发有限公司 | Pearl tracing identification method and device |
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| WO2018201580A1 (en) | 2018-11-08 |
| CN107238409A (en) | 2017-10-10 |
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