CN107505340A - A kind of ceramics authentication method - Google Patents
A kind of ceramics authentication method Download PDFInfo
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- CN107505340A CN107505340A CN201710623926.XA CN201710623926A CN107505340A CN 107505340 A CN107505340 A CN 107505340A CN 201710623926 A CN201710623926 A CN 201710623926A CN 107505340 A CN107505340 A CN 107505340A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/30—Accessories, mechanical or electrical features
- G01N2223/33—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts
- G01N2223/3306—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts object rotates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/401—Imaging image processing
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Abstract
The invention discloses a kind of ceramics authentication method, its step is:1) ceramics is positioned in the three-dimensional movement platform of X-ray scanning system;2) ceramics is carried out into 360 ° as axle using the axis of the three-dimensional movement platform to rotate, X ray remains in rotation process incides on the ceramics from inclined direction;3) after X ray is to the ceramics end of scan, the internal structural information of the 3-dimensional image comprising the ceramics inner structural features and the ceramics is rebuild according to scan image and stored into database;4) internal structural information and its 3-dimensional image of ceramics to be identified are generated;5) merged according to the internal structural information of ceramics and 3-dimensional image, judge whether the ceramics to be identified and the target ceramics are consistent, determine that the ceramics to be identified is true if consistent, be otherwise false.What the present invention improved ceramics identifies scope and precision.
Description
Technical field
The present invention relates to a kind of ceramics authentication method, based on Microfocus X-ray X ray non-destructive testing technology and equipment, leads to
Sign and identification of the X ray computed tomography scanning imaging realization to ceramics internal characteristicses are crossed, is prevented so as to reach ceramics
The pseudo- purpose with identification.At present, X ray non-destructive testing technology is widely used in fields such as industry, Precision measurements.
Background technology
Ceramics is typically more precious or rare, if detecting and being damaged in qualification process, can cause
Irremediable loss.Using the Testing and appraisal technology based on X ray, can be obtained on the premise of ceramics is not damaged
Structure feature information inside to ceramics.Ceramics is due in forming process, often using offhand
Method, its internal structure such as crackle, hole, it is mingled with etc. and has more characteristic compared to other mechanical-moulded ceramics, every
Architectural feature inside ceramics is often random distribution, and it is exclusive that these features can turn into the part ceramics
Identity.The false proof and authentication method of X ray, it is based on this feature of ceramics.Ceramic material body and its
Inner structural features such as hole, crack and tramp element etc. are different to the attenuation degree of X ray, are thrown after shining, obtained by X ray
Influence shade distinctions occur, this be differentiate ceramics inner structural features basis.Carried out using X ray internal special
Sign identification, there is lossless, high-resolution, efficient convenient.
The ceramics detection for being currently based on X ray has X ray Real-time Imaging method and x-ray tomography
Imaging technique.Both technologies depend on the appearance of high speed computer system, powerful image processing system and detector
The development of technology.
The detection method of X ray real time imagery, it is similar with traditional medical x-ray piece, be internal structure of body superposition and
Projection of one three-dimensional body in two-dimentional aspect into, this image appearance, is that three-dimensional body is in one plane superimposed
Drop shadow effect, this method detection speed is fast, data processing is fast, can provide the perspective view of detected ceramics in real time
Picture, still, because this image is Overlay of the three-dimensional body on two dimensional surface, therefore it can not accurately characterize ceramic skill
Positional information where art product internal structure, the true and false of a ceramics also cannot be absolutely demarcated, typically may be used
After artificially adding anti-counterfeiting mark in common ceramic, further seen using X ray Real-time Imaging method
This mark is examined, whether is regular product so as to differentiate, reaches false proof purpose.
X-ray tomography technology, is handled by image algorithm, and the 3-dimensional image of ceramics can be presented, so as to
Pattern, size and the positional information at place of ceramics internal feature are obtained, layer scanning technology one of which is to use
Common x-ray tomography instrument, it is that this method is in Testing and appraisal perpendicular to the method by throwing according to object using directions of rays
Problems with is primarily present during ceramics (such as ceramic disk) of elongated (such as ceramic bottle) or tabular:(1) ray passes through to be checked
The longest path of pottery for pottery biggest size of element, it is necessary to which enough energy-ray penetrates, but can not pass through
The method of simple increase X-ray scanners power solves, because the increase of x-ray power is along with the increasing of x-ray source focus
Greatly, this can cause the decline of picture quality;(2) path passed through due to ray is longer so that sensitivity decrease is shone in throwing, is being projected
It is difficult to the fine feature for embodying scanning pottery in information, satisfied faultage image can not be reconstructed;(3) tabular ceramics skill
The distance of art product and radiographic source is limited, it is difficult to high amplification ratio is obtained, so as to high-resolution imaging difficult to realize.
The content of the invention
For technical problem present in prior art, in order to overcome existing X-ray scanners in scanning tabular ceramics skill
X ray penetrating capacity is insufficient during art product, being difficult to the satisfied faultage image of acquisition, this is insufficient, and it is an object of the invention to provide one
Kind is widely used in the false proof and authentication method of different shape, especially tabular ceramics.
The present invention uses tilting incident X-rays, and directions of rays is at an angle according to object with being thrown, different from conventional X
Tomographic scanner X, but be scanned with tilting light beam incidence, this just overcomes previously described general X-ray scanning
The problem of instrument is present, the mode of oblique incidence causes the path that X ray passes through to shorten, while tabular ceramics can be placed
In the position nearer apart from radiographic source, and traditional radiographic source is incident perpendicular to the direction of sample, so for plaques,
Plaques need to carry out 360 ° of rotations, are limited to space requirement, therefore plaques can not be put when using traditional radiographic source
That puts is close, i.e., as it was noted above, the distance between tabular ceramics and radiographic source are limited, it is difficult to obtain high amplification ratio.
And this scan mode of oblique incidence is used, allow ceramics to be closely positioned over radiographic source side from space requirement,
So as to obtain larger amplification ratio, higher spatial discrimination can be obtained, meets that fine structure is high inside tabular ceramics
Differentiate, the Testing and appraisal demand of high-contrast.Therefore, tilting incident X-rays computed tomography scanning imaging method of the present invention,
Weak point of the conventional method in elongated, tabular ceramics identification can be overcome, improve reflecting for ceramics
Determine scope, this has very real meaning for the false proof of precious ceramics and identification.
The technical scheme is that:
A kind of ceramics is false proof and the method for identification, its step are:
1) ceramics is steadily positioned in X-ray scanning system three-dimensional movement platform by an orientation, makes ceramics
Artistic grade is among visual field;
2) x-ray source is started, ceramics carries out 360 ° of rotations with mechanical arm on the moving platform, and ray remains
Incided from inclined direction on the ceramics;I.e. the axis of X ray incident direction and motion platform has an inclination angle,
Axis of the ceramics along the motion platform carries out 360 ° of rotations;There is a maximum at inclination angle, and maximum is big by detector
The limitation of the space of components such as small and detector, radiographic source layout, in the present invention, the inclination angle used are up to 65 °, in fact
The size of visual ceramics in the use of border, shape adjust inclination angle size;
3) after X-ray scanning terminates, the three-dimensional for including ceramics inner structural features is rebuild by computer disposal
Image, obtain the internal structural information of the faultage image information, i.e. lid ceramics of each position of ceramics;
4) the faultage image information of every ceramics is stored in Computer Database respectively as separate unit;
5) the micro- CL described in the ceramics progress step (1) for needing to identify, (2) is scanned, and identical
Sweep parameter under carry out, obtain the 3-dimensional image and the ceramics of the inner structural features comprising the ceramics
Internal structural information;
6) by the ceramics inner structural features that step (5) obtains and the faultage image information in Computer Database
The architectural feature of display is compared;Contrast can rely on artificial observation or computer program identification to realize.Such as two knots
Whether three coordinate positions that structure feature occurs, and the shape of architectural feature, size unanimously judge whether two features are consistent.
7) 3-dimensional image in the 3-dimensional image and Computer Database for obtaining step (5) is carried out using computer program
Image co-registration;To examine the profile of two pieces ceramics whether completely the same;
8) authentication of ceramics is realized according to inner structural features and image co-registration result.If two pieces is ceramic
The profile of the art work is consistent, and inner structural features are consistent, then proves very, is otherwise false.
The invention has the advantages that:
The false proof method with identification of ceramics of the present invention, using the nothing for remaining X ray oblique incidence
Damage detection method detects to ceramics inside, obtains the image and data message of ceramics internal structure, with
Prior art is compared, it is possible to achieve the detection of large scale and tabular ceramics, overcomes common X-ray scanning method pair
In large scale, tabular ceramics amplification ratio is low, image resolution ratio is low the shortcomings that, can obtain inside tabular ceramics
The Testing and appraisal demand of fine structure high-resolution, high-contrast.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention.
Embodiment
In order to have the understanding become apparent to technical characteristic of the presently claimed invention, the purpose of invention and effect, now to this
The specific implementation process of invention is illustrated.
The method flow of the present invention is as shown in figure 1, its step includes:
1) ceramics is steadily positioned in X-ray scanning system three-dimensional movement platform by an orientation, makes ceramics
Artistic grade is among visual field;The shape of ceramics includes but is not limited to the structures such as circle, Long Circle, tabular;
2) x-ray source is started, ceramics carries out 360 ° of rotations with mechanical arm on the moving platform, and ray remains
Incided from inclined direction on plate-shaped body;The micro- CL of X ray typical operating parameters include but is not limited to:Tube voltage
150kV, the μ A of tube current 160;Depending on ceramics shape to be detected, size, thickness;The micro- CL of X ray optimal resolution
Rate can reach minimum 5 μm depending on ceramics size;
3) after X-ray scanning terminates, rebuild by computer picture software processing special comprising ceramics internal structure
The 3-dimensional image of sign, obtain the faultage image information of each position of ceramics;The three-dimensional image reconstruction of its ceramics
Method is to carry out Three dimensional convolution processing using the scan image of a liftering function pair ceramics, and the liftering function is logical
The point spread function of projection and back projection geometry is crossed to obtain;
4) the faultage image information of every ceramics is stored in Computer Database respectively as separate unit;
5) the micro- CL described in the ceramics progress step (1) for needing to identify, (2) is scanned, obtains the ceramic skill
The inner structural features and 3-dimensional image of art product;
6) by the ceramics inner structural features that step (5) obtains and the faultage image information in Computer Database
The architectural feature of display is compared;
7) 3-dimensional image in the 3-dimensional image and Computer Database for obtaining step (6) carries out image co-registration;
8) authentication of ceramics is realized according to inner structural features and image co-registration result;If internal structure
Feature occur three-dimensional coordinate position, the ceramics that the size shape of feature is consistent, image co-registration is completely the same be it is true, it is no
It is then puppet;So far the false proof of ceramics and identification are completed.
Claims (6)
1. a kind of ceramics authentication method, its step include:
1) ceramics is positioned in the three-dimensional movement platform of X-ray scanning system;
2) ceramics is subjected to 360 ° of rotations by axle of the axis of the three-dimensional movement platform, X ray begins in rotation process
Keep inciding on the ceramics from inclined direction eventually, i.e., X ray incident direction has an inclination angle with the axis;
3) after X ray is to the ceramics end of scan, is rebuild according to scan image and include the ceramics internal structure
The 3-dimensional image of feature and the internal structural information of the ceramics are simultaneously stored into database;
4) step 1)~3 are utilized) obtain the internal structural information of ceramics to be identified and comprising the ceramic skill to be identified
The 3-dimensional image of art product inner structural features;
5) judge that the ceramics to be identified is with the target ceramics according to the internal structural information of ceramics
It is no consistent;
6) 3-dimensional image of the 3-dimensional image of the ceramics to be identified and the target ceramics is subjected to image co-registration,
Judge whether the ceramics to be identified is consistent with the profile of the target ceramics;
If 7) step 5), judged result 6) are that the ceramics to be identified is consistent with the target ceramics,
Determine that the ceramics to be identified is true, be otherwise false.
2. the method as described in claim 1, it is characterised in that described to determine to be somebody's turn to do according to the internal structural information of ceramics
The ceramics to be identified method whether consistent with target ceramics in the database be:By the ceramic art to be identified
The inner structural features of product are compared with the architectural feature of the target ceramics, if the ceramics to be identified
Three-dimensional coordinate position, the size shape of feature one that inner structural features and the architectural feature of the target ceramics occur
Cause, it is determined that the ceramics to be identified is consistent with the target ceramics.
3. method as claimed in claim 1 or 2, it is characterised in that utilize the scanning of a liftering function pair ceramics
Image carries out the 3-dimensional image that Three dimensional convolution processing reconstructed includes the ceramics inner structural features.
4. method as claimed in claim 3, it is characterised in that the liftering function is by projecting the point with back projection's geometry
Spread function obtains.
5. method as claimed in claim 1 or 2, it is characterised in that believed using internal structure described in faultage image information representation
Breath.
6. the method as described in claim 1, it is characterised in that the shape of the ceramics include but is not limited to it is circular,
Long Circle, tabular.
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Cited By (7)
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CN108898127A (en) * | 2018-07-11 | 2018-11-27 | 宁波艾腾湃智能科技有限公司 | One kind being based on the matched method for anti-counterfeit of threedimensional model and equipment |
CN108956680A (en) * | 2018-05-31 | 2018-12-07 | 陈俊华 | A kind of integrated nondestructive inspection apparatus and method based on cloud platform |
CN109034841A (en) * | 2018-07-11 | 2018-12-18 | 宁波艾腾湃智能科技有限公司 | Art work identification, displaying and the transaction platform compared based on digitized image/model |
CN109191145A (en) * | 2018-08-05 | 2019-01-11 | 江西省驰芳艺术品评估鉴定有限公司 | For carrying out the database building method and art work age method of discrimination of age differentiation to the art work |
CN109299654A (en) * | 2018-08-05 | 2019-02-01 | 江西省驰芳艺术品评估鉴定有限公司 | Art work single-piece is traced to the source discrimination method |
CN111160145A (en) * | 2019-12-13 | 2020-05-15 | 广州懿锝文化创意有限公司 | Method for identifying uniqueness of porcelain |
CN116519721A (en) * | 2023-06-28 | 2023-08-01 | 陶瓷工业设计研究院(福建)有限公司 | Visual detection device and detection method for cracks on ceramic surface |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108956680B (en) * | 2018-05-31 | 2020-09-01 | 陈俊华 | Integrated nondestructive detection device and method based on cloud platform |
CN108956680A (en) * | 2018-05-31 | 2018-12-07 | 陈俊华 | A kind of integrated nondestructive inspection apparatus and method based on cloud platform |
CN108898127B (en) * | 2018-07-11 | 2022-03-01 | 宁波艾腾湃智能科技有限公司 | Anti-counterfeiting method and device based on three-dimensional model matching |
CN109034841A (en) * | 2018-07-11 | 2018-12-18 | 宁波艾腾湃智能科技有限公司 | Art work identification, displaying and the transaction platform compared based on digitized image/model |
CN108898127A (en) * | 2018-07-11 | 2018-11-27 | 宁波艾腾湃智能科技有限公司 | One kind being based on the matched method for anti-counterfeit of threedimensional model and equipment |
CN109034841B (en) * | 2018-07-11 | 2022-05-20 | 宁波艾腾湃智能科技有限公司 | Artwork identification, display and transaction platform based on digital image/model comparison |
CN109191145A (en) * | 2018-08-05 | 2019-01-11 | 江西省驰芳艺术品评估鉴定有限公司 | For carrying out the database building method and art work age method of discrimination of age differentiation to the art work |
CN109299654A (en) * | 2018-08-05 | 2019-02-01 | 江西省驰芳艺术品评估鉴定有限公司 | Art work single-piece is traced to the source discrimination method |
CN109299654B (en) * | 2018-08-05 | 2021-09-28 | 江西省驰芳艺术品评估鉴定有限公司 | Artwork single piece tracing identification method |
CN109191145B (en) * | 2018-08-05 | 2022-03-01 | 江西省驰芳艺术品评估鉴定有限公司 | Database establishing method for judging times of art and method for judging times of art |
CN111160145A (en) * | 2019-12-13 | 2020-05-15 | 广州懿锝文化创意有限公司 | Method for identifying uniqueness of porcelain |
CN111160145B (en) * | 2019-12-13 | 2023-09-19 | 广州懿锝文化创意有限公司 | Method for identifying porcelain uniqueness |
CN116519721A (en) * | 2023-06-28 | 2023-08-01 | 陶瓷工业设计研究院(福建)有限公司 | Visual detection device and detection method for cracks on ceramic surface |
CN116519721B (en) * | 2023-06-28 | 2023-09-08 | 陶瓷工业设计研究院(福建)有限公司 | Visual detection device and detection method for cracks on ceramic surface |
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