CN111222484A - Three-dimensional hand back vein verification system - Google Patents
Three-dimensional hand back vein verification system Download PDFInfo
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- CN111222484A CN111222484A CN202010039147.7A CN202010039147A CN111222484A CN 111222484 A CN111222484 A CN 111222484A CN 202010039147 A CN202010039147 A CN 202010039147A CN 111222484 A CN111222484 A CN 111222484A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/14—Vascular patterns
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Abstract
The invention relates to a three-dimensional hand back vein verification system which comprises a picture comparison system and a verification camera shooting mechanism, wherein the verification camera shooting mechanism is used for shooting hand back vein pictures at different angles and transmitting the shot hand back vein pictures to the picture comparison system, a three-dimensional hand back vein model needing to be verified is input into the picture comparison system, the hand back vein pictures shot by the verification camera shooting mechanism can be compared with the three-dimensional finger vein model, and a comparison result is output.
Description
Technical Field
The invention relates to the technical field of vein recognition, in particular to a three-dimensional hand back vein verification system.
Background
Vein identification is a neotype identification technique, can shoot the vein image of finger, back of the hand or palm through camera cooperation near infrared light source, and this discernment is compared current fingerprint identification and is had obvious advantage, can not receive the influence that finger wear and tear or adhere to the pollutant.
The three-dimensional dorsal hand vein is a common vein identification method, a three-dimensional dorsal hand vein model is constructed firstly and then transmitted to a picture comparison module, in subsequent use, the vein picture of the back of the hand to be identified is transmitted to the picture comparison module, the vein picture to be identified is compared with the constructed three-dimensional model of the back of the hand through the picture comparison module, further achieving the effect of identifying the vein of the back of the hand, but the existing three-dimensional vein identification system of the back of the hand has certain defects in practical application, and the constructed three-dimensional vein model of the back of the hand may have incomplete conditions, so that in the identification process, due to the angle of the back of the hand, some differences can appear in the shot identification vein picture, and if the constructed three-dimensional back of the hand vein model is not comprehensive, the situation that the identification cannot be easily caused occurs, so that the constructed three-dimensional back of the hand vein model needs to be verified.
Disclosure of Invention
The invention aims to provide a three-dimensional dorsal hand vein verification system which can compare verification pictures of different dorsal hand shooting angles with a constructed three-dimensional dorsal hand vein and further verify whether the three-dimensional dorsal hand vein is complete.
In order to achieve the above purpose, the invention adopts the technical scheme that: the utility model provides a three-dimensional back of hand vein's verification system, includes that the picture compares the system and verifies the mechanism of making a video recording, verifies the mechanism of making a video recording and is used for shooting the back of hand vein picture of different angles to transmit the back of hand vein picture of shooing for picture contrast system, the picture contrast system types into the three-dimensional back of hand vein model that has the needs to verify, can compare the back of hand vein picture that the mechanism of making a video recording was shot with three-dimensional finger vein model with verifying, and output comparison result.
Preferably, verify the mechanism of making a video recording and include the casing, seted up the chamber of making a video recording in the casing, the chamber of making a video recording for the arc cylindricality, the bottom surface is the plane, upper portion is the arc, and the arc part is provided with the slide rail rather than the radian is unanimous, the slide rail cooperation have the slider, the slider on be provided with camera and light source emitter, the slider be connected with the commentaries on classics piece through rotating the connecting rod, the cooperation of commentaries on classics piece have rotation driving device, camera and light source emitter be connected to and verify the controller.
Preferably, the rotation driving device comprises a rotating shaft which penetrates through the shell and is consistent with the axis of the arc-shaped part of the shooting cavity, one end of the rotating shaft, which penetrates through the shooting cavity, is connected with the rotating block, the other end of the rotating shaft is sleeved with a driven gear, the driven gear is meshed and matched with a driving gear, the driving gear is matched with a rotation motor embedded in the shell, the rotation motor is a stepping motor with a stepping angle of 90 degrees, the transmission ratio of the driven gear to the driving gear is 9:1, and the rotation motor is connected to the verification controller.
Preferably, the outer side of the shell is provided with a rotation detection arc sleeve which is coaxial with the driven gear, rotation detection sensors are uniformly embedded into the detection rotation arc sleeve along an arc, the phase difference of the adjacent rotation detection sensors is 10 degrees, the driven gear is provided with a rotation detection rod which can enable the rotation detection sensors to generate sensing signals, and the rotation detection sensors are connected to the verification controller.
Preferably, all the rotation detection sensors are provided with labels, the verification controller can feed back information of sensing signals generated by the rotation detection sensors with specific labels, the information and the photographed dorsal hand vein picture are packaged into one information to be transmitted to the picture comparison system, the picture comparison system is matched with a result analysis system, and the result analysis system analyzes the comprehensiveness and the application range of the three-dimensional finger vein model according to the comparison result of the picture comparison system and the information of the sensing signals generated by the rotation detection sensors with specific labels.
Preferably, the casing side set up with the chamber intercommunication of making a video recording verify the inlet, and verify the lower terminal surface of import and the bottom surface parallel and level in chamber of making a video recording, the up end of verifying the import be provided with the distancer, the range finding value of distancer transmit and verify the near infrared luminous intensity that the controller is used for controlling the light source transmitter transmission for.
Drawings
FIG. 1 is a schematic diagram of a verification camera mechanism;
fig. 2 is a cross-sectional view a-a of fig. 1.
The text labels shown in the figures are represented as: 1. a housing; 2. a camera shooting cavity; 3. a slide rail; 4. a slider; 5. a camera; 6. a light source emitter; 7. rotating the connecting rod; 8. rotating the block; 9. a driven gear; 10. a driving gear; 11. rotating the motor; 12. rotating the detection rod; 13. rotating the detection arc sleeve; 14. a rotation detection sensor; 15. verifying an import; 16. a distance measuring device.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
The invention specifically comprises the following steps: the utility model provides a three-dimensional back of hand vein's verification system, includes that the picture compares the system and verifies the mechanism of making a video recording, verifies the mechanism of making a video recording and is used for shooting the back of hand vein picture of different angles to transmit the back of hand vein picture of shooing for picture contrast system, the picture contrast system types into the three-dimensional back of hand vein model that has the needs to verify, can compare the back of hand vein picture that the mechanism of making a video recording was shot with three-dimensional finger vein model with verifying, and output comparison result.
The method comprises the following specific operations that a three-dimensional hand back vein model needing to be verified is recorded into a picture comparison system, then the hand back is placed into a verification camera shooting mechanism, hand back vein pictures with different hand back inclination angles are shot through the verification camera shooting mechanism, the inclination angles can be set to be-60 degrees to 60 degrees (relative to a vertical plane) according to specific needs, the shot hand back vein pictures with different hand back inclination angles are transmitted to the picture comparison system to be compared with the recorded three-dimensional hand back vein model, comparison results are displayed, if the hand back vein pictures with different hand back inclination angles can be recognized, the recorded three-dimensional finger vein model is proved to be complete and can be used for the three-dimensional hand back vein recognition system, otherwise, if the hand back vein models cannot be recognized completely, the three-dimensional finger vein model is proved to be incomplete and needs to be adjusted.
As shown in fig. 1-2, the verification camera shooting mechanism comprises a shell, a camera shooting cavity 2 is formed in the shell 1, the camera shooting cavity is arc-cylindrical, the bottom surface is a plane, the upper portion is arc-shaped, a slide rail 3 consistent with the radian of the arc-shaped portion is arranged on the arc-shaped portion, a slide block 4 is matched with the slide rail 3, a camera 5 and a light source emitter 6 are arranged on the slide block 4, the slide block 4 is connected with a rotating block 8 through a rotating connecting rod 7, the rotating block 8 is matched with a rotation driving device, and the rotation driving device, the camera 5 and the light source emitter 6 are connected to a verification controller.
Verify the specific operation of mechanism of making a video recording as follows, place the bottom in chamber 2 of making a video recording earlier with the back of the hand, realize keeping flat of the back of the hand promptly, then through verifying controller control light source emitter 6 transmission near infrared light, control rotation drive arrangement drives and changes 8 rotations simultaneously, and then drive slider 4 and move on slide rail 3, adjust the angle of camera 5 on the slider 4, and through verifying controller control camera 5 and shoot the picture of the back of the hand vein at the in-process that slider 4 removed, the radian that slider 4 removed is the angle of the back of the hand with camera 5 slope promptly, so can shoot the back of the hand vein picture of different angles.
As shown in fig. 2, the rotation driving device includes a rotating shaft penetrating through the casing 1 and having the same axis with the arc-shaped portion of the camera cavity 2, one end of the rotating shaft penetrating into the camera cavity 2 is connected with the rotating block 8, the other end is sleeved with the driven gear 9, the driven gear 9 is engaged and matched with the driving gear 10, the driving gear 10 is matched with the rotation motor 11 embedded in the casing 1, the rotation motor 11 is a stepping motor with a stepping angle of 90 degrees, the transmission ratio of the driven gear 9 to the driving gear 10 is 9:1, and the rotation motor 11 is connected to the verification controller.
The specific operation of the rotation driving device is as follows, and 90 degrees are rotated in a stepping mode through rotating the motor 11, so that the driven gear 9 can be driven to rotate by 10 degrees, and then the rotating block 8 is driven to rotate by 10 degrees, so that the sliding block 4 can be rotated by 10 degrees, the hand vein images at different angles can be shot by the matching camera better, and the motor 11 can be rotated in a reverse stepping mode to realize the reciprocating motion of the sliding block 4.
As shown in fig. 2, a rotation detection arc sleeve 12 coaxial with the driven gear 9 is arranged on the outer side of the housing 1, rotation detection sensors 14 are uniformly embedded in the detection rotation arc sleeve along an arc, the phase difference between adjacent rotation detection sensors 14 is 10 degrees, a rotation detection rod 12 capable of enabling the rotation detection sensors 14 to generate induction signals is arranged on the driven gear 9, and the rotation detection sensors 14 are connected to a verification controller.
Theoretically speaking, the step-by-step driven gear of rotating motor rotates 10 degrees, but the error can appear, through rotating detection lever 12 and rotating the principle together along with driven gear 9, can see whether rotate the back at every turn and whether have one to rotate detection inductor 14 and produce the sensing signal and judge whether accurate of pivoted range, if the rotation range is not accurate, then need adjust or change rotating motor.
As shown in fig. 2, all the rotation detection sensors 14 have labels, and the verification controller can feed back information of sensing signals generated by the rotation detection sensors 14 with specific labels, and package the information and the photographed dorsal vein image into one information to be transmitted to the image comparison system, and the image comparison system is further matched with a result analysis system, and the result analysis system analyzes the comprehensiveness and the application range of the three-dimensional finger vein model according to the comparison result of the image comparison system and the information of the sensing signals generated by the rotation detection sensors 14 with specific labels.
The rotation detection sensors 14 are all provided with labels, for example, when the rotation detection sensor with the label 1 generates a sensing signal, the camera is perpendicular to the back of the hand, that is, the inclination angle of the back of the hand is 0 degree, the label with a positive angle is from 11, the label with a positive angle is 10 degrees, the label with a positive angle is 12 degrees, the label with a positive angle is 20 degrees, the label with a negative angle is 30 degrees, and so on, the label with a negative angle is from 21, the label with a negative angle is-10 degrees, the label with a positive angle is-20 degrees, the label with a negative angle is 23 degrees, the label with a negative angle is-30 degrees, and so on, the label of the corresponding rotation detection sensor is attached to the vein picture of the back of the hand shot by the camera, and the label is also displayed in the comparison result in the process of; and then transmitting the comparison structure to a result analysis system, analyzing by the comparison result analysis system, if the test range is-70 degrees to 70 degrees, and only-70 degrees and 70 degrees cannot be identified, indicating that-60 degrees to 60 degrees can be identified, wherein the three-dimensional hand back vein model has a certain application value, and if 20 degrees or-20 degrees cannot be identified, proving that the three-dimensional hand back vein model is incomplete.
As shown in fig. 2, shell 1 side seted up with the chamber 2 intercommunication of making a video recording verify import 15, and verify the lower terminal surface of import 15 and the bottom surface parallel and level of chamber 2 of making a video recording, the up end of verifying import 15 be provided with distancer 16, distancer 16's range finding value transmit and verify the controller and be used for controlling the near-infrared light intensity that light source emitter 6 launches.
The design of verifying import 15 can ensure that the back of the hand of male is kept flat in making a video recording chamber 2, and distance meter 16 can measure its and the back of the hand distance between, and then can feed back out the thickness of the back of the hand, adjusts the near infrared luminous intensity of light source emitter 6 transmission according to the back of the hand thickness condition, realizes more good transmission effect.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principle and embodiments of the present invention have been described herein by way of specific examples, which are provided only to help understand the method and the core idea of the present invention, and the above is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can also be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (6)
1. The utility model provides a three-dimensional back of hand vein's verification system, its characterized in that, includes that the picture compares the system and verifies the mechanism of making a video recording, verifies the mechanism of making a video recording and is used for shooting the back of hand vein picture of different angles to transmit the back of hand vein picture of shooing for the picture contrast system, the three-dimensional back of hand vein model that the system was typeeed to the picture is compared and is had needs to verify, can compare the back of hand vein picture that the mechanism of making a video recording was shot with three-dimensional finger vein model, and output comparison result.
2. The three-dimensional dorsal hand vein verification system according to claim 1, wherein the verification camera mechanism comprises a housing (1), a camera cavity (2) is formed in the housing (1), the camera cavity is arc-cylindrical, the bottom surface is a plane, the upper portion is arc-shaped, a slide rail (3) which is consistent with the arc is arranged on the arc-shaped portion, a slide block (4) is matched with the slide rail (3), a camera (5) and a light source emitter (6) are arranged on the slide block (4), the slide block (4) is connected with a rotating block (8) through a rotating connecting rod (7), the rotating block (8) is matched with a rotation driving device, and the rotation driving device, the camera (5) and the light source emitter (6) are connected to a verification controller.
3. The three-dimensional dorsal hand vein authentication system according to claim 1, wherein the rotation driving device comprises a rotating shaft penetrating through the housing (1) and having the same axis as the arc-shaped part of the camera cavity (2), one end of the rotating shaft penetrating into the camera cavity (2) is connected with the rotating block (8), the other end of the rotating shaft is sleeved with a driven gear (9), the driven gear (9) is engaged with a driving gear (10), the driving gear (10) is engaged with a rotation motor (11) embedded in the housing (1), the rotation motor (11) is a stepping motor with a stepping angle of 90 degrees, the transmission ratio of the driven gear (9) to the driving gear (10) is 9:1, and the rotation motor (11) is connected to the authentication controller.
4. The three-dimensional dorsal hand vein authentication system according to claim 3, wherein the outer side of the housing (1) is provided with a rotation detection arc sleeve (12) coaxial with the driven gear (9), the rotation detection sensors (14) are uniformly embedded in the detection rotation arc sleeve along an arc, the phase difference between adjacent rotation detection sensors (14) is 10 degrees, the driven gear (9) is provided with a rotation detection rod (12) capable of enabling the rotation detection sensors (14) to generate sensing signals, and the rotation detection sensors (14) are connected to the authentication controller.
5. The three-dimensional dorsal hand vein authentication system according to claim 4, wherein all rotation detection sensors (14) have labels, and the authentication controller is capable of feeding back information of sensing signals generated by the rotation detection sensors (14) of specific labels, packaging the information and the photographed dorsal hand vein image into one information and transmitting the information to the image comparison system, and the image comparison system is further matched with the result analysis system, and the result analysis system analyzes the comprehensiveness and the application range of the three-dimensional finger vein model according to the comparison result of the image comparison system and the information of sensing signals generated by the rotation detection sensors (14) of specific labels.
6. The three-dimensional dorsal hand vein authentication system according to claim 2, wherein the side of the housing (1) is provided with an authentication inlet (15) communicated with the imaging chamber (2), the lower end surface of the authentication inlet (15) is flush with the bottom surface of the imaging chamber (2), the upper end surface of the authentication inlet (15) is provided with a distance meter (16), and the distance measurement value of the distance meter (16) is transmitted to the authentication controller for controlling the near-infrared light intensity emitted by the light source emitter (6).
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| CN202010039147.7A CN111222484A (en) | 2020-01-14 | 2020-01-14 | Three-dimensional hand back vein verification system |
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| CN202010039147.7A CN111222484A (en) | 2020-01-14 | 2020-01-14 | Three-dimensional hand back vein verification system |
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| CN104766073A (en) * | 2015-04-28 | 2015-07-08 | 天津理工大学 | Self-adaptive hand back vein image collecting system |
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| CN109740561A (en) * | 2019-01-11 | 2019-05-10 | 重庆工商大学 | Three-dimensional finger vein imaging system based on monocular camera |
| CN110113988A (en) * | 2016-11-17 | 2019-08-09 | 美第奇科技有限责任公司 | Method and apparatus for measurement of central venous pressure state |
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2020
- 2020-01-14 CN CN202010039147.7A patent/CN111222484A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204102154U (en) * | 2014-10-16 | 2015-01-14 | 江苏富士通通信技术有限公司 | Vena metacarpea recognition device aperture, vena metacarpea recognition device, identification apparatus |
| CN104766073A (en) * | 2015-04-28 | 2015-07-08 | 天津理工大学 | Self-adaptive hand back vein image collecting system |
| CN110113988A (en) * | 2016-11-17 | 2019-08-09 | 美第奇科技有限责任公司 | Method and apparatus for measurement of central venous pressure state |
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Application publication date: 20200602 |