CN109272078B - Identity authentication system and method - Google Patents

Abstract

The invention provides an identity authentication system and method, wherein the identity authentication system comprises an identity marking device, an information acquisition device and a server; the identity marking device is used for forming identity identification information on the target object; the information acquisition device is used for acquiring auxiliary information and transmitting the auxiliary information to the server when the identity identification information is formed; and the server is used for storing the acquired auxiliary information and providing the auxiliary information for the user so as to judge whether the process of forming the identity recognition information on the target object is legal or not. The security of the seal is found for the first time not only in the seal itself, but also in the use process. The method is put forward for the first time to carry out validity verification by monitoring the use process of the seal.

Description

Identity authentication system and method

Technical Field

The invention relates to the technical field of identity authentication, in particular to the field of authentication of identity identification information.

Background

At present, when identity authentication is carried out on a file, a seal is generally used for stamping the file. The seal is mostly named stamp or company stamp, the seal is generally engraved with company name, social credit number or personal name, the information recorded by the seal is direct, for example, the name of the person or the name of the company is directly recorded, and the seal is easy to identify but easy to forge. Even if the stamp is not seen, the stamp can be manufactured according to the name of the stamp object.

③ the ③ existing ③ seal ③ also ③ comprises ③ a ③ person ③ information ③ - ③ containing ③ seal ③, ③ for ③ example ③, ③ a ③ person ③ head ③ portrait ③ is ③ engraved ③ on ③ a ③ seal ③ printing ③ surface ③, ③ so ③ ① ③ the ③ person ③ head ③ portrait ③ is ③ not ③ easily ③ imitated ③ to ③ a ③ certain ③ extent ③ due ③ to ③ complex ③ information ③ and ③ better ③ information ③ uniqueness ③, ③ but ③ the ③ two ③ defects ③ still ③ exist ③, ③ namely ③ ① ③ the ③ personal ③ privacy ③ is ③ seriously ③ leaked ③, ③ the ③ person ③ head ③ portrait ③ is ③ spread ③ along ③ with ③ the ③ use ③ of ③ the ③ seal ③ due ③ to ③ the ③ fact ③ ① ③ the ③ seal ③ is ③ directly ③ printed ③ with ③ the ③ person ③ head ③ portrait ③, ③ the ③ seal ③ only ③ comprises ③ two ③ - ③ dimensional ③ information ③ (③ characters ③ or ③ pictures ③) ③, ③ the ③ information ③ content ③ is ③ low ③, ③ once ③ the ③ seal ③ is ③ imitated ③, ③ the ③ person ③ portrait ③ of ③ a ③ client ③ is ③ scrapped ③ as ③ the ③ seal ③, ③ and ③ the ③ person ③ portrait ③ seal ③ cannot ③ be ③ made ③ for ③ the ③ user ③ any ③ more ③. ③

In addition, when the existing seal is used and verified, the seal pattern is aimed at, and the process of using the seal is not verified in any legality, so that potential safety hazards in the process are brought. There is currently no one aware of this problem, nor a solution.

Therefore, there is an urgent need for a stamp with high information content, less liability to counterfeit, privacy protection, and safe and convenient stamp information replacement, and a stamp information verification system

Disclosure of Invention

In view of the above, the present invention has been made to provide an identity authentication system and method that overcomes or at least partially solves the above problems.

The invention provides an identity authentication system, which comprises an identity marking device, an information acquisition device and a server;

the identity marking device is used for forming identity identification information on the target object;

the information acquisition device is used for acquiring auxiliary information and transmitting the auxiliary information to the server when the identity identification information is formed;

and the server is used for storing the acquired auxiliary information and providing the auxiliary information for the user so as to judge whether the process of forming the identity recognition information on the target object is legal or not.

Optionally, the information acquisition device includes one or more of a position detection device, an image acquisition device, and an audio acquisition device; the auxiliary information includes one or more of position information, image information, audio information.

Optionally, the system further comprises an identity tag collecting device, configured to collect the identity tag and send the identity tag to the server.

Optionally, the server is further configured to compare the acquired identity tag with a standard identity tag, and determine whether the acquired identity tag is legal.

Optionally, the identity marking device is a 3D stamp, and is configured to enable the target object to form a stamp pattern corresponding to the 3D information of the designated area of the human body.

Optionally, the designated area includes a human body area or a concatenation of multiple human body areas.

Optionally, the pattern is a coding pattern, and the coding information includes 3D information of the designated area; or the pattern is a gray pattern, and the gray value corresponds to the 3D information of the designated area; or the pattern is a color pattern, and the color value corresponds to the 3D information of the designated area; or the pattern is a concave-convex structure corresponding to the 3D information of the designated area.

Optionally, the system further comprises a client, configured to receive the auxiliary information and/or the information about whether the identity tag is legal or not sent by the server, and provide the received auxiliary information and/or the information about whether the identity tag is legal or not to the client.

The invention also provides an identity authentication method,

the identity marking device forms identity identification information on the target object;

when the identity identification information is formed, the information acquisition device acquires auxiliary information and uploads the auxiliary information to the server;

the server stores the acquired auxiliary information and provides the auxiliary information to the user, so that whether the process of forming the identity recognition information on the target object is legal or not is judged.

Optionally, the acquiring auxiliary information includes acquiring one or more of position information, image information, and audio information.

Invention and technical effects

1. The security of the seal is found for the first time not only in the seal itself, but also in the use process. The method is put forward for the first time to carry out validity verification by monitoring the use process of the seal.

2. The technical problems of low information content and easy imitation of the two-dimensional seal are found for the first time. And provides a technical means for enabling the seal to carry three-dimensional information.

3. The method has the advantages that the three-dimensional information of the local part of the human body is used as the seal content for the first time, so that an observer cannot recognize the privacy information from the seal pattern, for example, the outline of the face of the observer cannot be obtained through the seal pattern, and the privacy can be protected. Meanwhile, the three-dimensional information containing the human body can improve the information content of the seal and improve the imitation difficulty compared with a two-dimensional outline.

4. The three-dimensional information spliced by the local or a plurality of local parts of the human body is provided for the first time as the content of the seal, so that once the seal is imitated, other local three-dimensional information or other spliced information can be replaced randomly as a new seal due to the fact that the surface of the human body has a plurality of local areas (such as the area of the left half nose, the spliced area of the index finger of the right hand and the left forehead and the like) containing the three-dimensional information, and the imitation of the seal does not influence the confidentiality of the new seal. After a seal of a client is imitated and invalid, the unique information of the human body can still be made into a new seal.

5. The method has the advantages that the three-dimensional information of a human body is reflected in the seal by utilizing the coded image, so that an observer cannot recognize the private information from the seal pattern easily.

6. The technical prejudice that the seal can only reflect two-dimensional information is overcome, and the three-dimensional information of a human body is reflected in the seal by utilizing concave-convex textures, gray level images and color images, so that the three-dimensional information can be reflected in the seal, and the information content is higher.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic diagram of an identity authentication system in embodiment 1 of the present invention;

fig. 2 is another schematic diagram of the identity authentication system in embodiment 1 of the present invention;

FIG. 3 is a schematic view of an acquisition apparatus in embodiment 2 of the present invention;

fig. 4 is a schematic view of a 3D stamp making apparatus according to embodiment 2 of the present invention;

fig. 5 is a schematic view of a 3D stamp in embodiment 2 of the present invention;

FIG. 6 is a schematic diagram of a usage of a 3D stamp in embodiment 3 of the present invention;

fig. 7 is a schematic diagram of forming a stamp pattern by printing with a 3D printer in embodiment 3 of the present invention.

Description of reference numerals:

101 tracks, 201 image acquisition equipment, 100 processors, 102 motion devices, 401 controllers, 402 storage media, 5003D stamps, 501 stamp bodies, 502 printing surfaces, 601 laser etching machines, 4003D printing controllers, 6023D printers, 700 target objects, 701 target object surfaces, 800 information acquisition devices, 801 position detection devices, 802 image acquisition devices, 803 audio acquisition devices, 900 identity mark acquisition devices and 1000 servers.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Embodiment 1(3D seal authentication system)

An identity authentication system is mainly used for authenticating the legality of a process of stamping a file by a stamp and the legality of a stamping pattern on the file, so that the reliability of stamping is ensured in both the result and the process.

Referring to fig. 1, the method mainly includes: identity marking device 500, information acquisition device 800, identity marking acquisition device 900, server 1000. The identity marking device 500 may be a stamp, preferably a 3D stamp (see the following embodiments for its specific manufacture and structure), for forming information with unique identity recognition, such as company name, code, legal representative name, etc., on a target object such as a document, a contract, a bill, etc.

The information collecting device 800 is configured to collect relevant information of the whole using process, including sound information, position information, image information, and the like, and upload the information to the server in the process that the user forms identification information on the target object 700 using the identification tag device 500. Thus, the information collecting device 800 includes a position detecting device 801, such as a GPS positioning device, a beidou positioning device, or a base station for positioning, or other detecting devices capable of determining a position; also included are image capture devices 802, such as cameras, video cameras, and the like; also included is an audio acquisition device 803, such as a sound sensor such as a microphone. It is to be understood that these sensors may be used in combination of one or more.

The identity mark collecting device 900 is used for collecting the stamp patterns stamped on the document and sending the stamp patterns to the server 1000. The stamp pattern is different according to the stamp, and if the pattern obtained on the document by using the common stamp is a two-dimensional pattern, the identification mark acquisition device 900 is a camera or a video camera. On the other hand, if the 3D stamp in the following embodiment is used, a concave-convex pattern carrying 3D biometric information is obtained. In this case, the identity token capturing device 900 is a 3D capturing device, such as a virtual camera matrix as mentioned in the embodiments below. Of course, as in the following embodiments, if the stamp pattern is a code pattern, the code information includes 3D information of the designated area; or a gray pattern, the gray value corresponding to the 3D information of the designated area; or a color pattern with color values corresponding to 3D information of a designated area, the identity mark collecting device 900 may also use a camera or a video camera directly.

The server 1000 is configured to store the acquired auxiliary information such as positioning information, sound information, image information, and the like, and send the auxiliary information to a client specified by a user, and the user refers to various auxiliary information of the seal using process according to a prompt of the client, so as to determine whether the seal using process is legal, thereby implementing accurate determination of the validity of the seal using process. If the user finds that the use environment of the seal is not the environment allowed by the user, the server can mark that the process is illegal. When other people subsequently inquire the server for verifying the legality of the file containing the seal pattern, the server can send illegal seal use information to the server. Thus, even if the stamp is copied or lost, others cannot legally sign documents or issue tickets using the stamp.

The server 1000 is further configured to receive stamp pattern information sent by the identity mark acquisition device 900, as shown in fig. 2, compare the received stamp information with standard stamp information pre-stored in the server by the stamp owner, and determine validity of the stamp pattern. If the two are identical, the stamp pattern is approved. The comparison may be direct comparison of the stamp patterns. Meanwhile, when the 3D stamp is used, a stamp pattern carries a large amount of user personalized biological characteristic 3D information. Therefore, the stamp pattern can be restored into 3D information, and then the 3D information is compared with the standard 3D information. In particular, since there are many regions where the human body can be used as personalized identity information, such as iris, face, fingerprint, palm print, etc., a plurality of user biometric 3D information, even all biometric 3D information, can be stored in the server as standard information. The 3D stamp only carries 3D information of a certain area of a user, so that whether the 3D information recovered by the stamp pattern is contained in the complete 3D information can be searched, and the legality of the stamp pattern can be authenticated.

Example 2(3D seal manufacturing)

1. Human body local area 3D information acquisition

Referring to fig. 3, the acquiring device specifically includes: the track 101, the image acquisition device 201, the processor 100, the movement device 102, the image acquisition device 201 is installed on the movement device 102, and the movement device 102 can move along the track 101, so that the acquisition area of the image acquisition device 201 changes continuously, a plurality of acquisition areas at different positions in space are formed on a scale of a period of time, and an acquisition matrix is formed, but only one acquisition area exists at a certain moment, so that the acquisition matrix is virtual. Since the image acquisition device is usually constituted by cameras, it is also referred to as a virtual camera matrix. The image acquisition device can also be a camera, a CCD, a CMOS, a camera, a mobile phone with an image acquisition function, a tablet and other electronic devices.

The matrix point of the virtual matrix is determined by the position of the image acquisition device when the image of the target person is acquired, and at least the following conditions are satisfied at two adjacent positions:

H*(1-cosb)＝L*sin2b；

a＝m*b；

0<m<1.5

where L is the distance from the image capturing device 201 to the target person, typically the distance from the captured target person facing the area when the image capturing device 201 is in the first position.

H is the actual size of the target person in the captured image, which is typically a picture taken by the image capture device 201 in the first position, where the target person has a true geometric size (not the size in the picture) measured along the direction from the first position to the second position. E.g., the first and second positions are in a horizontally moving relationship, then the dimension is measured along the horizontal lateral direction of the target person. For example, if the leftmost end of the target person is a and the rightmost end is B, the straight-line distance from a to B on the target person is measured and is H. The measurement method can calculate the actual distance according to the A, B distance in the picture and the focal length of the camera lens, and can also identify A, B on the target person and directly measure the AB straight-line distance by using other measurement means.

and a is an included angle of optical axes of the two adjacent position image acquisition devices.

m is a coefficient.

Because the size of the object and the concave-convex condition are different, the value of a can not be limited by a strict formula, and the value needs to be limited according to experience. According to a number of experiments, m may be within 1.5, but preferably may be within 0.8. Specific experimental data are seen in the following table:

target person	Value of m	Synthetic effect	Rate of synthesis
				Human head part	0.1、0.2、0.3、0.4	Is very good	>90％
Human head part	0.5、0.6	Good taste	>85％
				Human head part	0.7、0.8	Is better	>80％
Human head part	0.9、1.0	In general	>70％
				Human head part	1.0、1.1、1.2	In general	>60％
Human head part	1.2、1.3、1.4、1.5	Are synthesized relevantly	>50％
				Human head part	1.6、1.7	Is difficult to synthesize	<40％

After the target person and the image capturing device 201 are determined, the value of a can be calculated according to the above empirical formula, and the parameter of the virtual matrix, i.e. the position relationship between the matrix points, can be determined according to the value of a.

In a general case, the virtual matrix is a one-dimensional matrix, for example, a plurality of matrix points (acquisition positions) are arranged in a horizontal direction. However, when some target human objects are large, a two-dimensional matrix is required, and two positions adjacent in the vertical direction also satisfy the above-mentioned a-value condition.

in some cases, even if the matrix parameters (a values) are not readily determined in some cases based on the empirical formula, the matrix parameters may need to be adjusted experimentally by calculating the prediction matrix parameters a according to the formula and controlling the camera movement to the corresponding matrix points according to the matrix parameters, e.g., the camera takes a picture P1 at position W1, takes a picture P2 after moving to position W2, comparing the picture P1 with the picture P2 for a portion representing the same region of the target person, i.e., P1 ∩ P2 is non-null (e.g., includes corner portions of the human eye at the same time, but the angle at which the picture is taken is different), if no, readjusting the a value, and moving to position W2', repeating the comparison step, if P1 ∩ P38 is not null, continuing to move the camera to the W3 position based on the a value, taking a picture P3, comparing again for a plurality of pictures P1, P2 and P3 for a portion representing the same region, i.e., a n. P29 and P3684, and the combined image acquisition of the three acquired image data satisfying the requirement of the three acquired image composition by the three D3 acquisition device.

After the virtual matrix obtains a plurality of target person images, the processor processes the images to synthesize 3D. The method of image stitching according to the adjacent image feature points can be used for synthesizing the 3D point cloud or the image by using a plurality of images at a plurality of angles shot by a camera, and other methods can also be used.

The image splicing method comprises the following steps:

(1) processing the plurality of images and extracting respective feature points; features of the respective Feature points in the plurality of images may be described using a Scale-Invariant Feature Transform (SIFT) Feature descriptor. The SIFT feature descriptor has 128 feature description vectors, can describe 128 aspects of features of any feature point in direction and scale, and remarkably improves the accuracy of feature description, and meanwhile, the feature descriptor has spatial independence.

(2) And respectively generating feature point cloud data of the human face features and feature point cloud data of the iris features on the basis of the extracted feature points of the plurality of images. The method specifically comprises the following steps:

(2-1) matching the feature points of the multiple pictures according to the features of the feature points of each image in the multiple extracted images to establish a matched facial feature point data set; matching the feature points of the multiple pictures according to the features of the feature points of each image in the multiple extracted images, and establishing a matched iris feature point data set;

and (2-2) calculating the relative position of the camera relative to the characteristic point on the space of each position according to the optical information of the camera and different positions of the camera when the plurality of images are acquired, and calculating the space depth information of the characteristic point in the plurality of images according to the relative position. Similarly, spatial depth information of feature points in a plurality of images can be calculated. The calculation may be by beam adjustment.

Calculating spatial depth information of the feature points may include: the spatial position information and the color information, that is, may be an X-axis coordinate of the feature point at a spatial position, a Y-axis coordinate of the feature point at a spatial position, a Z-axis coordinate of the feature point at a spatial position, a value of an R channel of the color information of the feature point, a value of a G channel of the color information of the feature point, a value of a B channel of the color information of the feature point, a value of an Alpha channel of the color information of the feature point, or the like. In this way, the generated feature point cloud data includes spatial position information and color information of the feature points, and the format of the feature point cloud data may be as follows:

X1 Y1 Z1 R1 G1 B1 A1

X2 Y2 Z2 R2 G2 B2 A2

……

Xn Yn Zn Rn Gn Bn An

wherein Xn represents the X-axis coordinate of the feature point at the spatial position; yn represents the Y-axis coordinate of the feature point at the spatial position; zn represents the Z-axis coordinate of the characteristic point at the space position; rn represents a value of an R channel of color information of the feature point; gn represents a value of a G channel of color information of the feature point; bn represents the value of the B channel of the color information of the feature point; an represents the value of the Alpha channel of the color information of the feature point.

And (2-3) generating feature point cloud data of the features of the target person according to the feature point data set matched with the plurality of images 301 and the spatial depth information of the feature points.

And (2-4) constructing a 3D model of the target person according to the characteristic point cloud data so as to realize acquisition of the point cloud data of the target person.

And (2-5) attaching the acquired color and texture of the target person to the point cloud data to form a 3D image of the target person.

Wherein, the 3D image can be synthesized by using all the images in a group of images, and the image with higher quality can be selected from the images for synthesis.

It is understood that other 3D acquisition methods, such as structured light, laser scanning, coordinate measuring machines, etc., may be used to obtain 3D information.

The collected object comprises 3D biological characteristic data represented by a legal person, such as at least one of 3D biological characteristic information of hands, fingers, human faces, irises and the like. In order to protect privacy, only a part of 3D information of a certain organ can be collected, so that an observer cannot directly observe the information that an acquired object can identify the identity according to a seal pattern by naked eyes, namely, the person to which the seal belongs cannot be identified according to the seal pattern by naked eyes. For example, the left index finger, the right cheekbone area, the nose, the upper lip, the ear, the palm, and the eyes' irises may be collected. It can be understood that the acquisition object may be a region of a human body in which 3D information is rich, or may be a part of the region, or may be a plurality of regions spliced together. For example, the palm print 3D information can be used to stitch with the right face 3D information to form a complete 3D image. The seal or the seal pattern printed by the seal manufactured in this way is visually more confusing, and the user can not recognize the object by naked eyes. Moreover, when the traditional seal using the two-dimensional portrait as the seal content is used, once the seal is imitated, the portrait of the client is discarded as the seal due to the uniqueness of the portrait, and the portrait seal can not be made for the user. And because the surface of the human body has a plurality of local areas (such as the area of the left half nose, the splicing area of the index finger of the right hand and the left forehead and the like) containing three-dimensional information, other local three-dimensional information or other splicing information can be replaced as a new stamp. Because the human body surface contains more local areas containing three-dimensional information and can be mutually arranged and combined for splicing, the content of the seal can be frequently replaced, and the confidentiality of a new seal is not influenced by the imitation of the seal. Therefore, other seals containing biological 3D characteristics can be made for clients after one seal is invalid, and the seals can be replaced frequently according to the needs of the users, so that the safety is further improved.

2. 3D seal printing surface manufacturing method

After the 3D information of the human body part is obtained, it may be stored on a storage medium 402 such as a hard disk or a cloud server. Referring to fig. 4 and 5, 3D data is read from the storage medium 402 and transmitted to the controller 401, and the controller controls the laser etching machine 601 to etch and form concave-convex textures which are the same as or opposite to 3D information on the stamping surface 502 of the stamp according to the 3D data, so as to form the following 3D stamp 500: the stamp comprises a stamp body 501 and a stamp printing surface 502, wherein the stamp printing surface 502 comprises a concave-convex texture structure, wherein a is a side view, and b is a top view.

The seal is made of a high-hardness metal material, so that the seal can form a 3D seal shape with concave-convex textures on a file with enough hardness when being used for stamping.

The depth information of the concavo-convex texture is the same as or opposite to that of the 3D information. The depth of the point A in the 3D information relative to the reference surface is +4mm (convex), the depth of the point B relative to the reference surface is-1 mm (concave), the depth of the point A 'corresponding to the point A on the concave-convex texture of the stamp relative to the stamp reference surface is +4mm, and the depth of the point B' corresponding to the point B relative to the stamp reference surface is-1 mm. However, it is understood that the same or the opposite may be the same or the opposite of the depth relative value, that is, the depth of the point a in the 3D information with respect to the reference surface is +4mm (convex), the depth of the point B with respect to the reference surface is-1 mm (concave), and at this time, the depth of the point a 'corresponding to the point a with respect to the stamp reference surface on the concave-convex texture of the stamp is +1mm, and the depth of the point B' corresponding to the point B with respect to the stamp reference surface is-0.25 mm. Namely, the stamp concave-convex texture is used for proportionally reducing or amplifying the 3D information of the human body designated area, so that the stamp concave-convex texture can reflect the 3D outline of the human body designated area. When the concave-convex texture of the stamp is the same as the human body 3D information, when the stamp is used, the printed concave-convex pattern is opposite to the human body 3D information; when the concave-convex texture of the stamp is opposite to the human body 3D information, the printed concave-convex pattern is the same as the human body 3D information when the stamp is used. However, in the opposite or same way, 3D information of the designated area of the human body can be reflected only by setting at the time of stamp detection.

Optionally, the 3D printing controller 400 reads the 3D data from the storage medium 402, and controls the 3D printer 602 according to the data to print the concave-convex structure of the stamp body 501 and the stamping surface 502 of the 3D stamp 500.

In addition, the stamp surface 502 of the stamp may be etched by using a nicking tool, a machine tool, a hot-melt mechanism, or the like according to the 3D data by using mechanical, optical energy, or thermal energy.

When the seal is actually made, the 3D information reflecting the biological characteristics can be used as a part of the seal content, and the seal content can still include information in the existing seal according to the user's needs, such as company name, credit code, name, etc.

Example 3 (formation of 3D stamp Pattern)

For a non-rigid object, a stamp having a concave-convex structure on its printing surface may be used to apply pressure to the object directly, so that the concave-convex structure of the printing surface is printed on the surface 701 of the object 700, thereby forming a stamp pattern having a reverse concave-convex structure, as shown in fig. 6. For example, the stamp content (including 3D biometric features) can be stamped on the paper of the calligraphy and painting by a stamp with a concave-convex structure, so that the paper has an opposite concave-convex structure.

However, in some cases, such a stamp is inconvenient to use. For example, the target object has high hardness and cannot form a concave-convex structure in a stamping mode; the deformation recovery capability of the target object is high, and the printed concave-convex structure is easy to disappear. In these cases, a new method of printing the stamp pattern is required.

1. Using laser etching, machine tool, 3D printer

After the 3D information of the human body part is obtained, it may be stored on a storage medium 402 such as a hard disk or a cloud server. The 3D data is read from the storage medium 402 and transmitted to the controller 401, and the controller controls the laser etcher 601 to etch and form the concave-convex texture which is the same as or opposite to the 3D information on the surface 701 of the target 700 according to the 3D data, so as to form a 3D stamp pattern.

The depth information of the concave-convex texture of the 3D stamp pattern is the same as or opposite to the depth information of the 3D information. The same or opposite may be the same or opposite of the absolute value of the depth, that is, the depth of the point a in the 3D information with respect to the reference plane is +4mm (convex), the depth of the point B with respect to the reference plane is-1 mm (concave), at this time, the depth of the point a 'corresponding to the point a on the concave-convex texture of the stamp with respect to the reference plane of the target object is +4mm, and the depth of the point B' corresponding to the point B with respect to the reference plane of the target object is-1 mm. However, it is understood that the same or the opposite may be the same or the opposite of the depth relative value, that is, the depth of the point a in the 3D information with respect to the reference plane is +4mm (convex), and the depth of the point B with respect to the reference plane is-1 mm (concave), in which case the depth of the point a 'corresponding to the point a on the concavo-convex texture of the object with respect to the reference plane of the object is +1mm, and the depth of the point B' corresponding to the point B with respect to the reference plane of the object is-0.25 mm. Namely, the object concave-convex texture proportionally reduces or enlarges the 3D information of the human body designated area, thereby enabling the object concave-convex texture to reflect the 3D outline of the human body designated area. It will be appreciated that this scaling up/down is not only in the depth Z direction, but also in the XY direction.

Optionally, referring to fig. 7, the 3D printing controller 400 reads 3D data from the storage medium 402, and controls the 3D printer 602 according to the data to print the target object 700, where the printed target object 700 includes a surface 701 having a concave-convex structure capable of reflecting human body 3D information.

Alternatively, a stamp pattern etched on the surface 701 of the object 700 by using a mechanical, optical, and thermal energy, such as a graver, a machine tool, or a thermal fusing mechanism, may be used according to the 3D data.

When the seal is actually made, the 3D information reflecting the biological characteristics can be used as a part of the seal content, and the seal content can still include information in the existing seal according to the user's needs, such as company name, credit code, name, etc.

2. Forming gray or color two-dimensional patterns

The traditional stamp generally uses a two-dimensional pattern as the stamp content, and cannot reflect more information. Also making the skilled person such a technical prejudice is: the seal can only reflect two-dimensional information. Such as text information, human portraits, lines, etc.

After the 3D information of the human body part is obtained, it may be stored on a storage medium 402 such as a hard disk or a cloud server. The 3D data is read from the storage medium 402 and transmitted to the controller 401, and the controller controls the printer 603 to print and form a 3D stamp pattern corresponding to the 3D information on the surface 701 of the object 700 according to the 3D data. For example, the human body local 3D information includes a point a having coordinate values of (X1, Y1, Z1), and a point B having coordinate values of (X2, Y2, Z2). Then, in the stamp pattern, XY coordinates of a 'point corresponding to a point are (X1', Y1 '), XY coordinates of B' point corresponding to B point are (X2 ', Y2'), and depth information of a 'and B' points are represented by gray scale information G1, G2, where

G1/Z1 ═ G2/Z2. Meanwhile, the distance between the points A 'and B' can be proportionally enlarged or reduced according to the distance between the points A 'and B', namely the XY-direction coordinates of the points A 'and B' are proportionally enlarged or reduced, so that the seal pattern can accurately reflect the human body 3D information.

It is to be understood that the above-mentioned gradation information may also be represented by color information. I.e. the specific depth information Z is represented by any one of the values in the specific R, G, B. For example, a corresponding relation between the R value and the depth information Z is established, that is, the stamp pattern forms red images with different shades, and the shade of red represents the depth information of the corresponding point.

Meanwhile, a fixed relationship can be established between the depth information and the color, for example, a certain depth information corresponds to a unique RGB value, so that the stamp pattern forms a graph with different colors, and the different colors represent the depth information of corresponding points.

In this way, when printing a stamp pattern, a stamp pattern corresponding to 3D information can be formed on the surface 701 of the object 700 using a device capable of forming a gradation or color pattern, such as a printer, a copier, a projector, an inkjet device, or a transfer device.

When the seal is detected, the human body 3D information reflected by the seal can be recovered only by identifying the corresponding gray scale and color value.

On the basis of the traditional seal, the technical bias is overcome, the three-dimensional human body information is reflected by using the two-dimensional image, the information content is larger, and the safety is higher, which is also one of the invention points.

3. Forming coding patterns

Although the above scheme adopts various means to protect the privacy of the client, the scheme mainly takes image information as the main part. In order to increase the difficulty of an observer for observing the stamp pattern to obtain the appearance of a client, one or more of XYZ coordinate information, texture information, color information, gray scale information and adjacent point relation information in the 3D information can be used for forming a two-dimensional code pattern according to the coding rule of the two-dimensional code to be used as the stamp pattern. It will be appreciated that other encoding rules may be used to form the encoding pattern as the stamp pattern.

In this way, when printing a stamp pattern, a two-dimensional code stamp pattern corresponding to 3D information can be formed on the surface 701 of the object 700 using a device capable of forming a pattern, such as a printer, a copier, a projector, an inkjet device, or a transfer device.

It is understood that depth information is one of important information as 3D information, and gradation information, color information, and a relationship with adjacent dots corresponding to the dots are also important information, and these information may be embodied in the stamp pattern.

Example 4 (detection of 3D stamp Pattern)

When the stamp pattern is of a concave-convex structure, the method for detecting the stamp pattern is to collect the 3D information of the stamp pattern by using the 3D collecting device, compare the 3D information with the client standard 3D information stored in the system, and if the two information reflect the 3D characteristics of the same area, the authenticity of the target object 700 can be recognized.

When the stamp pattern is a color or gray pattern, the method for detecting the stamp pattern comprises the steps of collecting the stamp pattern by using an image collecting device, recovering 3D information represented by the stamp pattern according to XY coordinate information and gray \ color information of the collected pattern, comparing the 3D information with client standard 3D information stored in a system, and identifying the authenticity of the target object 700 if the two information reflect the 3D characteristics of the same area.

When the stamp pattern is a coding pattern, the method for detecting the stamp pattern is to collect the stamp pattern by using an image collecting device, recover the 3D information represented by the stamp pattern according to a coding rule, compare the 3D information with the client standard 3D information stored in the system, and if the two information reflect the 3D characteristics of the same area, the authenticity of the target object 700 can be recognized.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (8)

1. An identity authentication system, characterized by: the system comprises an identity marking device, an information acquisition device and a server;

the identity marking device is used for forming identity identification information on the target object;

the information acquisition device is used for acquiring auxiliary information and transmitting the auxiliary information to the server when the identity identification information is formed;

the server is used for storing the acquired auxiliary information and providing the auxiliary information to the user so as to judge whether the process of forming the identity identification information on the target object is legal or not;

the identity marking device is a 3D stamp and is used for enabling the target object to form a stamp pattern corresponding to the 3D information of the designated area of the human body; the designated area comprises one area of the human body or the splicing of a plurality of areas of the human body; for forming information with unique identification on the target object of the document, contract, ticket.

2. The identity authentication system of claim 1, wherein: the information acquisition device comprises one or more of a position detection device, an image acquisition device and an audio acquisition device; the auxiliary information includes one or more of position information, image information, audio information.

3. The identity authentication system of claim 1, wherein: the system also comprises an identity mark acquisition device which is used for acquiring the identity mark and sending the identity mark to the server.

4. The identity authentication system of claim 1, wherein: the server is also used for comparing the acquired identity mark with the standard identity mark and determining whether the acquired identity mark is legal or not.

5. The identity authentication system of claim 1, wherein: the pattern is a coding pattern, and the coding information comprises 3D information of the specified area; or the pattern is a gray pattern, and the gray value corresponds to the 3D information of the designated area; or the pattern is a color pattern, and the color value corresponds to the 3D information of the designated area; or the pattern is a concave-convex structure corresponding to the 3D information of the designated area.

6. An identity authentication system according to any one of claims 1 to 5, wherein: the client is used for receiving the auxiliary information and/or the information whether the identity mark is legal or not sent by the server and providing the auxiliary information and/or the information to the client.

7. An identity authentication method, characterized in that:

the identity marking device forms identity identification information on the target object;

when the identity identification information is formed, the information acquisition device acquires auxiliary information and uploads the auxiliary information to the server;

the server stores the acquired auxiliary information and provides the auxiliary information to the user so as to judge whether the process of forming the identity identification information on the target object is legal or not;

the identity marking device is a 3D stamp and is used for enabling the target object to form a stamp pattern corresponding to the 3D information of the designated area of the human body; the designated area comprises one area of the human body or the splicing of a plurality of areas of the human body; for forming information with unique identification on the target object of the document, contract, ticket.

8. The identity authentication method of claim 7, wherein: the collecting auxiliary information comprises one or more of collecting position information, image information and audio information.

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