CN108898127A - One kind being based on the matched method for anti-counterfeit of threedimensional model and equipment - Google Patents
One kind being based on the matched method for anti-counterfeit of threedimensional model and equipment Download PDFInfo
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- CN108898127A CN108898127A CN201810760619.0A CN201810760619A CN108898127A CN 108898127 A CN108898127 A CN 108898127A CN 201810760619 A CN201810760619 A CN 201810760619A CN 108898127 A CN108898127 A CN 108898127A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/64—Three-dimensional objects
- G06V20/653—Three-dimensional objects by matching three-dimensional models, e.g. conformal mapping of Riemann surfaces
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/018—Certifying business or products
- G06Q30/0185—Product, service or business identity fraud
Abstract
The invention discloses one kind to be based on the matched method for anti-counterfeit of threedimensional model and equipment, includes the following steps：Scanning obtains the digital three-dimemsional model of genuine piece object, is stored in digital three-dimemsional model information material library；Obtain the digital three-dimemsional model of article to be verified；In the digital three-dimemsional model information material library retrieval obtain with the threedimensional model of the article to be verified threedimensional model the most matched, and calculate its matching degree；Judge whether the article to be verified is genuine piece according to whether the matching degree is more than certain threshold value.The present invention has easy to operate easy-to-use, and accuracy is high, and stability is strong, at low cost, the advantage that anti-counterfeiting information is difficult to tamper with.
Description
Technical field
The invention belongs to fake certification technical fields, and in particular to then one kind is led to based on 3-D scanning is carried out to article
Cross comparison digital three-dimemsional model, and the method and apparatus for carrying out fake certification with computer vision technique.
Background technique
Currently used anti-counterfeiting technology is by the description information of item to be protected, date of manufacture, grown place, manufacturer's title
And its network address, the information such as Item Number storage to bar code or two dimensional code.Consumer obtains Item Information by barcode scanning and logs in
The false proof database of the article is compared.This method is at low cost, is easy to be mass produced, but bar code, two-dimension code label
Image is easy to be replicated by criminal, limits its antifalse effect.The electronic tag to grow up in the recent period does not use vision side
Formula, but item related information is stored with a kind of electronic equipment.The information can pass through radio frequency identification (RFID) or near-field communication
(NFC) etc. telecommunications mode passes to identifying system (104281954 A of referenced patent CN；CN 107590663 A).Identification
The Item Information and false proof database that system will acquire compare verifying.This non-contacting data transfer mode can accommodate more
More information, and storage medium is not because being printed on a possibility that appearance is without being worn or being replicated by illegal person intuitively.So
And the cost of electronic tag is more expensive, and it is anti-fake to be chiefly used in tracing to the source for high-end product.
Although above mentioned various method for anti-counterfeit play certain effect on protection consumer and production firm's equity,
But the storage medium that its critical defect is anti-counterfeiting information is separated with article itself.In general, bar code, two dimensional code,
Electronic tag can be all packaged into the outer packing of article, and false proof database also only records the basic description information of article, this makes
Criminal has an opportunity to take advantage of, and common counterfeit means are put into fakement in the used packing box of former genuine piece.In general, consumer
The bar code in genuine piece packing box, two dimensional code, electronic labeling information are read, and then inquires background data base and obtains merchandise news,
However consumer is difficult to distinguish high-caliber counterfeit merchandise and genuine piece using these merchandise newss.To solve the problems, such as that outer packing is exchanged,
Manufacturer may do the primary device opened and cancelled in packaging.But this way not only increases merchandise cost, and unfavorable
It is changed hands in the circulation of commodity, because the proficiency buyer of commodity is second-hand without normal direction or even the following potential buyer of more hands proves that it possesses quotient
The true and false of product.Someone is it is also contemplated that by the mode of commodity counterfeit prevention code coding and commodity integrally connected (referenced patent CN
104732409 A), but the method for this intrusive mood will obviously destroy the original form of object, in certain application such as arts work
It is anti-fake on be impossible.
The 3-D scanning technology of rapid development is scanned by space, shape, structure and the color to actual object
To obtain the space coordinate and texture information of body surface.It can will be in kind by the digital three-dimemsional model that 3-D scanning obtains
Steric information be converted to the digital signal that computer capacity is directly handled, provide convenience efficiently means for digitlization in kind.
During 3-D scanning, the ranging sample point on former material object surface can be accomplished less than 0.1 millimeter, and the range error of each point can be with
Less than 0.1 millimeter.Such high-precision shape information can be regarded as the unique attribute that article is difficult to replicate completely.Any Gao Fang
Genuine article is if it is desired to accomplish all to accomplish with the geometric error of original product almost not less than 0.1 millimeter in millions of a sample points
It is possible.Patent (104035988 B of CN), which proposes, has passed through spatial digitizer acquisition ceramics threedimensional model as it
Identity information.However in the implementing method of patent description, " the three-dimensional data information of ceramics to be verified can be marked
Note can also be printed upon on product certification in the outer packing of ceramics." to illustrate this method although be by the three-dimensional of article
Data are deposited in the database, but its querying method still relies on the description information in article outer packing, does not solve object at all
The problem of characteristic information of product itself is separated with the fake certification information physical being present in outer packing.
Patent (107505340 A of CN), which proposes, to be passed through x-ray scanning ceramics and generates its 3-dimensional image, is intended to lead to
It is whether consistent with determination ceramics to be identified and the target ceramics in database to cross comparison 3-dimensional image.But
What this method compared is the structure feature in 3-dimensional image, rather than accurately compares geometric dimension, therefore in precision
Shortcoming.And x-ray scanning instrument belongs to professional equipment, expensive, bulky, not Portable belt, while the behaviour of x-ray scanning instrument
Author needs by special training to avoid X-ray injury caused by human body as far as possible, therefore x-ray scanning instrument is difficult in ordinary consumption
In popularize.
Summary of the invention
It is present on the physical medium except article itself to solve fake certification information in existing method for anti-counterfeit at all
And be easy the problem of being replicated and distorting, the present invention propose it is a kind of in the acquisition, storage, query process of anti-fake data completely according to
Rely article own physical attribute, without rely on be stored on the external agencies such as certificate or packing box such as bar code, two dimensional code,
A kind of completely new method for anti-counterfeit of the anti-counterfeiting information such as electronic tag (RFID).
According to an aspect of the invention, there is provided it is a kind of based on the matched method for anti-counterfeit of threedimensional model, including：
Scanning obtains the digital three-dimemsional model of genuine piece object, is stored in digital three-dimemsional model information material library；
Obtain the digital three-dimemsional model of article to be verified；
It retrieves and is obtained with the threedimensional model of the article to be verified most in digital three-dimemsional model information material library
For matched threedimensional model, and calculate its matching degree；
Judge whether the article to be verified is genuine piece according to whether the matching degree is more than certain threshold value.
Preferably, the Digital Three-Dimensional scanning includes carrying out three to appearance and/or the inner geometry construction of genuine piece object
Dimension scanning.
Preferably, the method further includes：
Item Information library is established, the satellite information of the genuine piece object, the satellite information and the digitlization three are stored
The threedimensional model of the genuine piece object stored in dimension module information material library corresponds.
Preferably, after the digital three-dimemsional model that scanning obtains genuine piece object, the method further includes：
The corresponding feature vector of above-mentioned digital three-dimemsional model is calculated, and is stored in characteristic vector data library, and pass through
The threedimensional model stored in database technology and digital three-dimemsional model information material library corresponds.
Preferably, the calculation method of described eigenvector is one of the following：
(1) with Zernike matrix, perhaps spherical wavelet indicates above two threedimensional model by Zernike matrix or ball
The coefficient of face small echo is as feature vector；
(2) method for utilizing spectral factorization, using the spectral factorization coefficient of above two model as feature vector.
Preferably, described eigenvector is one group of real vector, for describing entirety or the part of digital three-dimemsional model
Feature.
Preferably, the method for the digital three-dimemsional model for obtaining article to be verified is one of following methods：
(1) 3-D scanning is carried out to the article to be verified using spatial digitizer；
(2) it is taken pictures using binocular depth camera to the article to be verified, and number is produced by processing range information
Change threedimensional model；
(3) one section of video is continuously taken pictures or shoots to the article to be verified using common monocular camera, according to multiple pictures
The camera perspective geometry relationship of the corresponding relationship of lap and every photo, can reconstructing digital using photogrammetric algorithm
Change threedimensional model.
Preferably, the retrieval in digital three-dimemsional model information material library obtains the threedimensional model with article to be verified
Threedimensional model the most matched, and its matching degree is calculated, include the following steps：
(1) it initializes, by the digitlization of threedimensional model and article to be verified in digital three-dimemsional model information material library
Threedimensional model transforms to a common reference frame or directly using one of them as reference frame, then after the conversion
Coordinate system in above-mentioned two model is initially registered；
(2) Model registration, using iterative algorithm, alternating estimates the corresponding relationship put between above-mentioned two model and current
Optimal coordinate conversion relation, until iteration error has reached predetermined value less than given threshold value or the number of iterations；
(3) similarity for calculating registration model, as the matching degree.
Preferably, before retrieving digitized three-dimensional model information data bank, the method further includes：
A two-dimensional projection of the digital three-dimemsional model of the article to be verified is obtained, then using based on deep learning
Objects in images recognizer determine article generic contained by the two-dimensional projection, and then scan Item Information library to filter out
It is not belonging to the threedimensional model of the category.
Preferably, after obtaining the digital three-dimemsional model the most matched, the method further includes：
The digital three-dimemsional model the most matched is presented by visualization process；
Touch screen by finger, mouse or keyboard scale, rotate, move the threedimensional model, multi-angle, it is comprehensive,
Observe to high-resolution the article to be verified；
The mark of different colours is superimposed upon on the threedimensional model, it is identical with article to be verified on divided area to inform
Part and different piece.
According to another aspect of the present invention, one kind is additionally provided based on the matched anti counterfeit appts of threedimensional model, including is prevented
Pseudo- authentication server, the fake certification server include：
Digital three-dimemsional model information material library, for storing the digital three-dimemsional model of genuine piece object；
Feature vector computing module, for calculating the feature vector of the digital three-dimemsional model；
Characteristic vector data library, for storing the feature vector of the digital three-dimemsional model；
Authentication module is retrieved, is obtained and article to be verified for being retrieved in digital three-dimemsional model information material library
Threedimensional model threedimensional model the most matched, and calculate its matching degree.
Preferably, the fake certification server further comprises：
Item Information library, for storing the satellite information of the genuine piece object, the satellite information and the digitlization three
The threedimensional model of the genuine piece object stored in dimension module information material library corresponds.
Preferably, the equipment further comprises verifying terminal, and the verifying terminal includes：
Digital three-dimemsional model obtains module, for obtaining the digital three-dimemsional model of article to be verified；
Interface is verified, for the digital three-dimemsional model of article to be verified to be sent to the retrieval authentication module, and is connect
Receive the digital three-dimemsional model the most matched and its corresponding Item Information that the fake certification server exports；
Most matched threedimensional model is presented by visualization process, touches screen, mouse by finger by as a result display module
Mark or keyboard can be scaled, be rotated, moving the threedimensional model, observe the exhibit to be tested to multi-angle, comprehensive, high-resolution
Product；The mark of different colours is superimposed upon on the threedimensional model, to inform the same section on divided area with article to be verified
And different piece.
Preferably, the verifying interface is handset port, internet interface or terminal device query interface.
The advantage of the invention is that：The anti counterfeit appts of profession are not needed in verification process of the invention, whole operation is simple
Easy-to-use, accuracy is high, and stability is strong, and there is at low cost, anti-counterfeiting information to be difficult to the advantage being tampered.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 shows the principle of progress 3-D scanning and typing relevant information after the completion of genuine piece of the invention is manufactured and shows
It is intended to；
Fig. 2 shows the schematic illustrations needed when carrying out anti-fake certificate to article of the invention.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened completely is communicated to those skilled in the art.
The present invention scans article using spatial digitizer and constructs its digital three-dimemsional model (3D model).Digitlization three
Dimension module refers in particular to a kind of a kind of mode that is loyal, complete, three-dimensional, digitally describing actual object in the present invention.Three-dimensional mould
Type refer to it is any can use point a cloud, triangular mesh, polygon, or other means the shape of expression article and its intrinsic belong to
Property, including the information such as geometry and texture.Digital three-dimemsional model believes the color texture on solid geometry information in kind and surface
Breath digitlization, loyalty completely reflect the information in the appearance and boring structure of article itself (if any).Logical
During crossing 3-D scanning acquisition article threedimensional model, the ranging sample point on former material object surface can be accomplished less than 0.1 millimeter, often
The range error of a point can be less than 0.1 millimeter.Such high-precision information can be regarded as article completely and be difficult to replicate only
One attribute.The article of any high emulation is if it is desired to accomplish to accomplish to be less than with the geometric error of original product in millions of a sample points
0.1 millimeter is nearly impossible.
Based on the above thought, the present invention proposes a kind of accurate digitlization three of article to be verified in relatively three-dimensional system of coordinate
Whether dimension module is consistent with the target digitization threedimensional model of information material library storage, and then determines whether article to be tested is genuine piece
Method.This method has anti-spurious accuracy high, and anti-counterfeiting information difficulty is distorted, advantage at low cost.
The method of the present invention includes two big processes：(A) article carries out 3-D scanning and typing to it after the completion of manufacturing
When relevant information；(B) when needing article anti-counterfeit to authenticate.The particular content of two big processes is introduced in detail below.
(A) when article manufactures process completion, as shown in Figure 1, executing following steps：
A1, each article are completed after manufacturing link formation finished product, are scanned using high-precision three-dimensional scanner to it
Obtain digital three-dimemsional model.Each product is with this digitized forms storage of threedimensional model into information material library.The number
The precision of word threedimensional model should reach disturbing of can distinguishing that small technique change in craft, semi-hand or industry manufacture generates
It is dynamic.Note that 3-D scanning is not only limited to be scanned article appearance, article boring structure division also can capture
(if any) geometrical construction information more completely describes article to be formed.
A2, other satellite informations corresponding to article described in A1, for example, commodity generic, producer, the production time,
The information such as production site and price are stored in Item Information library.Goods attribute information can use database technology and number
The digital three-dimemsional model stored in word three-dimensional model information data bank corresponds.
The digital three-dimemsional model of article described in A3, corresponding A 1, feature vector module is to each digital three-dimemsional model
Calculate its corresponding feature vector.In general, in order to accelerate to the Digital Three-Dimensional in digitlization three-dimensional model information data bank
The retrieval rate of model, threedimensional model may map to certain feature space, then in the definition space feature vector (shape
descriptor).Feature vector is one group of real vector, for describing the entirety or local feature of digital three-dimemsional model.It is good
Feature vector should have adequacy and necessity to the description of digital three-dimemsional model, that is, require different Digital Three-Dimensional moulds
Type corresponds to different feature vectors, and different feature vectors corresponds to different digital three-dimemsional models.Feature vector is stored in spy
It levies in vector data library, and the Digital Three-Dimensional mould by being stored in database technology and digital three-dimemsional model information material library
Type corresponds.
A4, digital three-dimemsional model information material library, Item Information library and characteristic vector data library are stored in cloud
Fake certification server in.The feature vector that each threedimensional model uploads in cloud server meeting trigger the server calculates mould
Block calculates the feature vector to the digital three-dimemsional model and write-in characteristic vector data library.
(B) when needing article anti-counterfeit to authenticate, as shown in Fig. 2, executing following steps：
B1, item authentication terminal obtain module by digital three-dimemsional model and obtain the Digital Three-Dimensional mould of article to be verified
Type.
The acquisition of digital three-dimemsional model includes but is not limited to following common form：
(1) 3-D scanning is carried out to the article using dedicated spatial digitizer.Scanning light source can be laser (1aser)
It is also possible to structure light (Structure light).Spatial digitizer can be moveable handheld device and be also possible to fix
Desk device.
(2) it is taken pictures using binocular depth camera to the object.Binocular camera not only has the function of general camera shooting photo
Can, depth (depth) information of article can also be captured.Each pixel also has more other than red, green, blue three-dimensional color information
One dimension is described to the range information of camera.Professional software for calculation produces Digital Three-Dimensional by processing range information
Model.
(3) using common monocular camera include that mobile phone camera continuously takes pictures or shoot one section of video to the article, and according to
The camera perspective geometry relationship of the corresponding relationship of multiple pictures lap and every photo, while utilizing photogrammetric algorithm
It (Photogrammertry) can reconstructing digital threedimensional model.
B2, item authentication terminal fake certification interface the digital three-dimemsional model is uploaded into item authentication server.
Fake certification interface can be handset port, internet interface or terminal device query interface.
Retrieval authentication module on B3, item authentication server the library searching of digital three-dimemsional model information material with it is described
Upload digital threedimensional model threedimensional model the most matched and the matching degree for calculating them.If retrieving authentication module to need
Large area scanning is done to digitlization three-dimensional model information data bank and matches uploaded digital three-dimemsional model, in order to accelerate to examine
Suo Sudu, retrieval authentication module obtain a two-dimensional projection for uploading threedimensional model first, then using based on depth
The objects in images recognizer of habit determines article generic contained by the two-dimensional projection, so scan item information data library with
Filter out the digital three-dimemsional model for being not belonging to the category.
If B4, retrieval authentication module need to further reduce the range of digital three-dimemsional model to be matched in database,
System can match feature vector corresponding to digital three-dimemsional model quickly to screen in digital three-dimemsional model information material library
Digital three-dimemsional model.
The similarity of digital three-dimemsional model substantially can be expressed as the distance between their feature vectors.For threedimensional model
A and B is situated between if A can be coincide by the rotation in its coordinate system with translation with B even when A and B is stored in computer
Data in matter are different, they are also considered as the same object.Therefore, retrieval authentication module is rigid constant first with having
Property feature vector match threedimensional model.Such mode is mainly exactly to find the feature vector with translation and rotational invariance.
In general, translation invariance can be obtained by carrying out initial transformation to model.For example, the reference that the mass center of model is new as its
Coordinate system.Rotational invariance can be realized by some specific transformation.Representative method has：
(1) model is indicated with Zernike matrix or spherical wavelet.Feature vector is exactly the coefficient of these transformation.
(2) method (spectral decomposition) for utilizing spectral factorization, using the spectral factorization coefficient of model as spy
Levy vector.
Most digital three-dimemsional models can be screened out by comparing feature vector.Remaining Digital Three-Dimensional mould to be matched
Type quantity narrows down to the range that can be compared one by one an of very little.
B5, to remaining digital three-dimemsional model to be matched, calculate one by one and the upload digital threedimensional model
Matching degree.Comparison result includes overall similarity and each local matching degree.For purposes of illustration only, being connect by fake certification
The digital three-dimemsional model that mouth uploads is referred to as A, is then referred to as B for each digital three-dimemsional model to be matched.Verifying
The contained retrieval authentication module of server is done as follows：
(1) it initializes
Model A and B are transformed into a common reference frame or directly using one of them as reference frame.Than
Such as, model can be converted using the methods of Principal Component Analysis Method (principal component analysis), so
Two models are initially registered in coordinate system after the conversion afterwards.
(2) Model registration
Using optimization algorithm, Model registration is carried out to model A and Model B.
(2.1) objective function, objective function can be expressed as the weighting function of the various features such as geometry, texture.Than
Euclidean distance, the difference of curvature, color difference on such as model A and Model B between corresponding points.
(2.2) coordinate conversion relation (mainly including translation vector and spin matrix) of setting models A to B, finds model A
In minimize objective function with the corresponding relationship (correspondence) of the point in Model B.For point each in model A
Pi, the corresponding points in Model B are Φ (Pi).Algorithm finds optimal corresponding relationship min Φ ∑ (Pi ∈ A) D (Pi, a Φ
(Pi)) make objective function minimum.D is the distance between two corresponding points function.When executing this step for the first time, the seat of A to B
Mark transformation relation can be used (1) and initialize obtained result.
(2.3) corresponding relationship in previous step in model A with Model B midpoint is given, algorithm solving model A arrives Model B
Optimum coordinates transformation relation.It is assumed that spin matrix contained by from model A to Model B coordinate transform is R, translation vector t.For
Each point Pi in model A, transformed be coordinate is RPi+t.Because the target of registration is most after allowing model A to translate by rotation
Measure consistent with B, therefore the point after algorithmic minimizing coordinate transform in A is at a distance from corresponding points in its B, i.e. min ∑ (Pi ∈ A) D '
(RPi+t, Φ (Pi)).D ' is the distance between two corresponding points function, and definition can be identical with the distance function of previous step
It can also be different.
(2.4) iteration second step and third step, until the small Mr. Yu's given threshold value of iteration error or the number of iterations reach
To the upper limit being set in advance.
(3) similarity of registration model is calculated.Under certain conditions, we can be by target optimal in (2) step
Similarity of the functional value as two models.In addition, we, which can also calculate, is registrated latter two model others similarity.Such as
The distribution of curvature, distribution of color etc. are indicated with histogram, calculate similarity or distance between these distributions, then as mould
Similarity between type.
Matching result is returned to item authentication terminal by the output module on B6, item authentication server.If matching essence
Degree is more than certain threshold value, and it is genuine piece that system, which assert that the article has sufficiently high confidence level, and output module can will number the most matched
Word threedimensional model and its corresponding Item Information also return to item authentication terminal.
B7, the verification result display module for verifying terminal will provide verifying report.Report includes whether article to be verified is deposited
It is in genuine piece three-dimensional modeling data storehouse.If result be it is yes, as a result display module by visualization process will most matched number
Word threedimensional model is presented on the anti-pseudo-terminal of item authentication, and terminal user can touch screen, mouse or keyboard by finger
It scales, rotates, the mobile threedimensional model observes the article to multi-angle, comprehensive, high-resolution.Meanwhile different colours
Mark, which is superimposed upon in the digital three-dimemsional model, to be used to inform on divided area and the same section of material object to be verified and different portions
Point.
In conclusion the present invention has easy to operate easy-to-use, accuracy is high, and stability is strong, and at low cost, anti-counterfeiting information difficulty is usurped
The advantage changed.
, can be there are many kinds of implementation method using the method for anti-counterfeit of inventive concept of the invention, the following specifically describes wherein 2
Kind：
Embodiment 1
S1, commodity, which are completed to scan when manufacture factory through spatial digitizer, obtains digital three-dimemsional model.The model passes through mutual
Networking uploads or locality connection storage is into false proof database.Anti-counterfeiting system generates the retrieval of the commodity threedimensional model simultaneously
Number, be put into the packing boxes of commodity or paste the surface of package of commodity, can also the person of being purchased become oneself again and can remember
Password.
S2, when needing fake certification, a spatial digitizer to the commodity complete scanning obtain digital three-dimemsional model
And upload to anti-counterfeit server.Three-dimensional model search number is also transmitted to anti-fake service by mobile phone or computer application program simultaneously
Device.
After S3, anti-counterfeit server receive checking request, corresponding digital three-dimemsional model is retrieved by searching number.
S4, anti-counterfeit server utilize algorithm, compare the difference of two threedimensional models come when whether determining the commodity with factory
It is just the same.
Verification result is returned to mobile phone by S5, anti-counterfeit server.
Embodiment 2
S1, commodity, which are completed to scan when manufacture factory through spatial digitizer, obtains digital three-dimemsional model.The model passes through mutual
Networking uploads or locality connection storage is into false proof database.
S2, when needing fake certification, a spatial digitizer to the commodity complete scanning obtain digital three-dimemsional model
And upload to anti-counterfeit server.
After S3, anti-counterfeit server receive checking request, type of merchandize is identified first with artificial intelligence approach, passes through matching
The specific characteristic of article reduces the query context of threedimensional model.
S4, to each digital three-dimemsional model, execute the S4 step in embodiment 1.
Verification result is returned to mobile phone by S5, anti-counterfeit server.
It should be noted that：
Algorithm and display be not inherently related to any certain computer, virtual bench or other equipment provided herein.
Various fexible units can also be used together with teachings based herein.As described above, it constructs required by this kind of device
Structure be obvious.In addition, the present invention is also not directed to any particular programming language.It should be understood that can use various
Programming language realizes summary of the invention described herein, and the description done above to language-specific is to disclose this hair
Bright preferred forms.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention：It is i.e. required to protect
Shield the present invention claims have more features than feature expressly recited in each claim.Therefore, it then follows specific real
Thus the claims for applying mode are expressly incorporated in the specific embodiment, wherein each claim itself is used as this hair
Bright separate embodiments.
Those skilled in the art will understand that, can to the module in the equipment in embodiment carry out adaptively
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
One in the creating device of microprocessor or digital signal processor (DSP) to realize virtual machine according to an embodiment of the present invention
The some or all functions of a little or whole components.The present invention is also implemented as executing method as described herein
Some or all device or device programs (for example, computer program and computer program product).Such realization
Program of the invention can store on a computer-readable medium, or may be in the form of one or more signals.This
The signal of sample can be downloaded from an internet website to obtain, and is perhaps provided on the carrier signal or mentions in any other forms
For.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (14)
1. one kind is based on the matched method for anti-counterfeit of threedimensional model, which is characterized in that including：
Scanning obtains the digital three-dimemsional model of genuine piece object, is stored in digital three-dimemsional model information material library；
Obtain the digital three-dimemsional model of article to be verified；
Retrieval is obtained with the threedimensional model of the article to be verified the most in digital three-dimemsional model information material library
The threedimensional model matched, and calculate its matching degree；
Judge whether the article to be verified is genuine piece according to whether the matching degree is more than certain threshold value.
2. the method according to claim 1, wherein
The 3-D scanning includes carrying out 3-D scanning to the geometrical construction of the appearance and/or boring structure of genuine piece object.
3. the method according to claim 1, wherein the method further includes：
Item Information library is established, the satellite information of the genuine piece object, the satellite information and the Digital Three-Dimensional mould are stored
The digital three-dimemsional model of the genuine piece object stored in type information material library corresponds.
4. method according to claim 1 or 3, which is characterized in that obtain the Digital Three-Dimensional mould of genuine piece object in scanning
After type, the method further includes：
The corresponding feature vector of above-mentioned digital three-dimemsional model is calculated, and is stored in characteristic vector data library, and pass through data
The digital three-dimemsional model stored in library technology and digital three-dimemsional model information material library corresponds.
5. according to the method described in claim 4, it is characterized in that,
The calculation method of described eigenvector is one of the following：
(1) with Zernike matrix perhaps spherical wavelet indicate above two digital three-dimemsional model by Zernike matrix or
The coefficient of spherical wavelet is as feature vector；
(2) method for utilizing spectral factorization, using the spectral factorization coefficient of above two model as feature vector.
6. according to the method described in claim 4, it is characterized in that,
Described eigenvector is one group of real vector, for describing the entirety or local feature of digital three-dimemsional model.
7. the method according to claim 1, wherein
The method of the digital three-dimemsional model for obtaining article to be verified is one of following methods：
(1) 3-D scanning is carried out to the article to be verified using spatial digitizer；
(2) it is taken pictures using binocular depth camera to the article to be verified, and Digital Three-Dimensional mould is generated by processing range information
Type；
(3) one section of video is continuously taken pictures or shoots to the article to be verified using common monocular camera, and according to multiple pictures weight
The corresponding relationship of folded part and the camera perspective geometry relationship of every photo, while utilizing photogrammetric algorithm reconstructing digital
Threedimensional model.
8. the method according to claim 1, wherein
Described retrieve in digital three-dimemsional model information material library obtains with the digital three-dimemsional model of article to be verified the most
Matched threedimensional model, and its matching degree is calculated, include the following steps：
(1) it initializes, the threedimensional model of threedimensional model and article to be verified in digital three-dimemsional model information material library is become
A common reference frame is changed to or directly using one of them as reference frame, then in coordinate system after the conversion
Above-mentioned two model is initially registered；
(2) Model registration, using iterative algorithm, alternating estimates the corresponding relationship put between above-mentioned two model and current optimal
Coordinate conversion relation, reached predetermined value until iteration error is less than given threshold value or the number of iterations；
(3) similarity for calculating registration model, as the matching degree.
9. the method according to claim 1, wherein before retrieving digitized three-dimensional model information data bank,
The method further includes：
A two-dimensional projection for obtaining the digital three-dimemsional model of the article to be verified, then utilizes the figure based on deep learning
Object recognition algorithm determines article generic contained by the two-dimensional projection as in, and then scans Item Information library and do not belonged to filtering out
In the threedimensional model of the category.
10. the method according to claim 1, wherein obtaining the digital three-dimemsional model the most matched
Later and its matching degree is more than certain threshold value, the method further includes：
The digital three-dimemsional model the most matched is presented by visualization process；
Screen, mouse or keyboard are touched by finger to scale, rotate, move the threedimensional model, multi-angle, comprehensive, high score
Observe to resolution the article to be verified；
The mark of different colours is superimposed upon in the digital three-dimemsional model, to inform the phase on divided area with article to be verified
With part and different piece.
11. one kind is based on the matched anti counterfeit appts of threedimensional model, including fake certification server, which is characterized in that described anti-fake
Authentication server includes：
Digital three-dimemsional model information material library, for storing the digital three-dimemsional model of genuine piece object；
Feature vector computing module, for calculating the feature vector of the digital three-dimemsional model；
Characteristic vector data library, for storing the feature vector of the digital three-dimemsional model；
Authentication module is retrieved, obtains three with article to be verified for retrieving in digital three-dimemsional model information material library
Dimension module threedimensional model the most matched, and calculate its matching degree.
12. equipment according to claim 11, which is characterized in that the fake certification server further comprises：
Item Information library, for storing the satellite information of the genuine piece object, the satellite information and the Digital Three-Dimensional mould
The digital three-dimemsional model of the genuine piece object stored in type information material library corresponds.
13. equipment according to claim 11 or 12, which is characterized in that the equipment further comprises verifying terminal, institute
Stating verifying terminal includes：
Digital three-dimemsional model obtains module, for obtaining the digital three-dimemsional model of article to be verified；
Interface is verified, for the digital three-dimemsional model of article to be verified to be sent to the retrieval authentication module, and receives institute
State the digital three-dimemsional model the most matched and its corresponding Item Information that fake certification server exports；
As a result display module is presented most matched digital three-dimemsional model by visualization process, by finger touch screen,
Mouse or keyboard can be scaled, be rotated, moving the threedimensional model, observe the exhibit to be tested to multi-angle, comprehensive, high-resolution
Product；The mark of different colours is superimposed upon on the threedimensional model, to inform the same section on divided area with article to be verified
And different piece.
14. equipment according to claim 13, which is characterized in that
The verifying interface is handset port, internet interface or terminal device query interface.
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| CN114943706A (en) * | 2022-05-27 | 2022-08-26 | 宁波艾腾湃智能科技有限公司 | Anti-counterfeiting authentication of plane works or products in absolute two-dimensional space state |
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