CN211124067U - Multi-view multispectral finger collecting device - Google Patents
Multi-view multispectral finger collecting device Download PDFInfo
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- CN211124067U CN211124067U CN201922010443.XU CN201922010443U CN211124067U CN 211124067 U CN211124067 U CN 211124067U CN 201922010443 U CN201922010443 U CN 201922010443U CN 211124067 U CN211124067 U CN 211124067U
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Abstract
The utility model provides a multi-view multi-spectral finger collecting device, which comprises a multi-view collecting module and a base module; the multi-view acquisition module consists of a polygonal bracket, a camera module without a filter, a multi-spectral light source circuit board and a screw nut; after the camera module without the filter is connected with the multispectral light source circuit board, the camera module is fixed on the inner wall of the polygonal bracket through screws and nuts, so that the fingers can be subjected to image acquisition in a surrounding mode; a near-infrared light-emitting diode lamp and a visible light-emitting diode are arranged on the multispectral light source circuit board; the base module comprises a base support, a light source control circuit board and a finger support for placing fingers; the light source control circuit board is arranged in the base support and is respectively in signal connection with the camera module without the filter and the multispectral light source circuit board. The utility model discloses the volume is miniaturized, can realize carrying out the multispectral collection in many visual angles to the finger.
Description
Technical Field
The utility model relates to a biological feature recognition technology field, more specifically say, relate to a multispectral finger collection system of multi-view.
Background
Today, with advanced information technology and network technology, identification of personal identity and personal information security has become a key social problem to be solved urgently, and biometric identification as an identity authentication and information security technology has been applied to various fields such as customs inspection, security monitoring, financial banking, criminal investigation and household registration management in a large quantity. The biological feature identification technology utilizes biological features for identity identification, and the adopted biological features mainly comprise physiological features such as human faces, fingerprints, irises, finger veins, fingers and the like; and behavioral characteristics such as gait, signature, voiceprint, etc. Compared with the traditional identity authentication mode based on identity documents or passwords and the like, the biological feature identification has the advantages of high safety, difficulty in counterfeiting, no loss and the like.
The finger biological characteristics are the most widely applied characteristics in the field of biological characteristic identification, and mainly comprise the characteristics of fingerprints, finger veins, finger bellies, transverse striations of the back of the finger, a fingernail bed, finger shapes and the like. The finger biological characteristics have the characteristics of convenience in use and easiness in miniaturization of equipment, and the user is required to actively cooperate, so that the risk that the biological characteristics are collected and even stolen without permission of the user is greatly reduced, which is difficult to be possessed by the characteristics such as human faces, gaits, voiceprints and the like. However, the current finger biological feature recognition system usually only uses two-dimensional features or single-mode features for identity recognition, the single-mode features are small in information capacity, low in recognition accuracy, easy to counterfeit and easy to change due to environmental influences, so that many researchers and enterprises adopt multi-mode biological features to perform identity recognition on two or even multiple biological features together, and the influence of the problems is reduced.
The common finger multi-mode fusion mode is the fusion of fingerprints and finger veins, the fingerprints are a widely used biological characteristic, the characteristic points are many, and the identification accuracy is high; the finger vein has the advantages of high safety and capability of in vivo detection as a biological feature inside the finger, and the finger vein and the biological feature are combined to improve the accuracy rate and the safety of system identification. However, at present, the fingerprint sensor and the near-infrared camera are mainly adopted for feature collection, and the two sensors respectively collect corresponding biological features, so that the system still has the risk that each biological feature is separately attacked by counterfeiting, and the production cost is higher. Meanwhile, in actual use, the two-dimensional fingerprint and the two-dimensional finger vein feature are often inconsistent with the registration template region due to the fact that the finger rotates axially, and therefore the identification accuracy rate is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome shortcoming and not enough among the prior art, provide a multispectral finger collection system in many visual angles, this collection system is small, and can realize carrying out multispectral collection in many visual angles to the finger, for follow-up three-dimensional modeling and discernment provide multispectral information and multi-modal information, can be applied to more practical application scenes.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a multi-view multispectral finger collecting device is characterized in that: the device comprises a multi-view acquisition module and a base module; the multi-view acquisition module consists of a polygonal bracket, a plurality of camera modules without filter plates, a plurality of multispectral light source circuit boards and screws and nuts for matching with adjustable positions; the camera module without the filter is connected with the multispectral light source circuit board and then fixed on the inner wall of the polygonal bracket through screws and nuts, so that the fingers can be subjected to image acquisition in a 360-degree surrounding manner; the multispectral light source circuit board is provided with a near-infrared light-emitting diode lamp and a visible light-emitting diode; the number of the filter-free camera modules and the multispectral light source circuit boards is equal to the number of the edges of the polygonal bracket;
the base module comprises a base support, a light source control circuit board and a finger support for placing fingers; the base support is connected with the polygonal support; the finger supports are connected with the base support and positioned on two sides of the polygonal support; the light source control circuit board is arranged in the base support and is respectively in signal connection with the filter-free camera module and the multispectral light source circuit board.
In the above-mentioned scheme, through the shooting of a plurality of no filter camera module to and on a plurality of multispectral light source circuit board under near-infrared emitting diode lamp and visible light emitting diode's the effect, the utility model discloses carry out 360 full encircles to placing the finger at finger support and shoot, realize the multispectral collection of finger multi-view angle, provide multispectral information and many characteristic information for follow-up three-dimensional modeling and discernment, thereby improve the information quantity of follow-up finger three-dimensional modeling and the rate of accuracy of finger discernment.
The multispectral light source circuit board is provided with a round hole, and a collecting assembly of the camera module without the filter extends out of the round hole to the polygonal support.
The collection assembly of the filter-free camera module consists of a filter-free lens and a wide-spectrum gray scale camera module.
The near-infrared light-emitting diode lamps are arranged on the multispectral light source circuit board along the axial direction of the fingers and are arranged in a straight shape.
The visible light emitting diodes are annularly distributed around the circular hole at equal intervals.
The side surface of the polygonal support is provided with a wire groove for routing the multispectral light source circuit board and the filter-free camera module, and wires of the multispectral light source circuit board and the filter-free camera module are collected into the base support through the wire groove and are in signal connection with the light source control circuit board.
And the side surface of the polygonal support is provided with a fixing hole for fixing and adjusting the positions of the filter-free camera module and the multispectral light source circuit board. The screw nut matched with the position-adjustable screw nut is used for fixing and adjusting the positions of the filter-free camera module and the multispectral light source circuit board through the fixing hole, so that the optimal illumination distance and shooting distance can be conveniently adjusted, and the follow-up three-dimensional reconstruction effect can be ensured.
The finger support comprises a finger support frame for supporting fingers and a baffle frame for preventing the fingers from moving back and forth by a large distance; the finger support frame and the baffle frame are oppositely arranged on two sides of the polygonal support.
The top end of the finger support frame is provided with an arc-shaped top end convenient for placing fingers.
The baffle frame is higher than the handheld support frame, and an arc hole is formed in the position, opposite to the arc top end of the finger support frame, of the baffle frame and used for positioning finger tips. Therefore, the area for collecting the fingers at each time is basically consistent, and the accuracy of subsequent finger identification is improved.
The utility model discloses many visual angles multispectral finger collection system is like this work:
when a finger is placed at the top end of the circular arc and extends into the polygonal support, 1 group of near-infrared light-emitting diodes in the multispectral light source circuit boards are lighted, the non-filter camera modules on the right side of the multispectral light source circuit boards collect finger vein images of the finger, a plurality of visible light-emitting diodes distributed at equal intervals in a ring shape are further arranged on the multispectral light source circuit boards, each visible light-emitting diode is lighted in sequence for a time period, 3 non-filter camera modules at the same position and two adjacent positions of the multispectral light source circuit boards collect visible light images reflected by the surface of the finger, and the visible light images are used for three-dimensional reconstruction of the surface of the subsequent finger.
Compared with the prior art, the utility model has the advantages of as follows and beneficial effect: the utility model discloses multispectral finger collection system volume miniaturization in many visual angles can realize carrying out the multispectral collection in many visual angles to the finger, for follow-up three-dimensional modeling and discernment provide multispectral information and many characteristic information, can be applied to more practical application scenes.
Drawings
FIG. 1 is a schematic illustration of a hexagonal cradle and base module of an embodiment;
FIG. 2 is a schematic diagram of a multispectral light source circuit board in an embodiment;
wherein, 1 is a hexagonal bracket, 2 is a multispectral light source circuit board, 3 is a near-infrared light-emitting diode lamp, 4 is a visible light-emitting diode, 5 is a base bracket, 6 is a round hole, 7 is a wire guide groove, 8 is a fixing hole, 9 is a finger support frame, 9.1 is an arc-shaped top end, 10 is a baffle frame, and 10.1 is an arc-shaped hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1 and 2, the utility model discloses multispectral finger collection system of many visual angles includes many visual angles collection module and base module, and wherein, many visual angles collection module comprises hexagon support 1, 6 no filter camera modules (not shown), 6 multispectral light source circuit board 2 and the screw nut who is used for supporting adjustable position. After the filter-free camera module is connected with the multispectral light source circuit board 2, the filter-free camera module is fixed on the inner wall of the hexagonal support 1 through screws and nuts, so that the fingers can be subjected to image acquisition in a surrounding mode. The multispectral light source circuit board 2 is provided with a near-infrared light-emitting diode lamp 3 and a visible light-emitting diode 4. The base module comprises a base support 5, a light source control circuit board and finger supports for placing fingers, the base support 5 is connected with the hexagonal support 1, the finger supports are connected with the base support 5 and located on two sides of the hexagonal support 1, and the light source control circuit board is arranged inside the base support 5 and is in signal connection with the filter-free camera module and the multispectral light source circuit board 2 respectively.
Specifically, the multispectral light source circuit board 2 is provided with a round hole 6, and a collecting component of the camera module without the filter extends out of the round hole 6 to the hexagonal support 1. The no filter camera module of this embodiment is the product on the existing market, and its collection subassembly comprises no filter camera lens and broad spectrum grey scale camera module.
The near-infrared light emitting diode lamp 3 of the present invention is disposed on the multispectral light source circuit board 2 along the finger axial direction and arranged in a line shape. And the visible light LEDs 4 are annularly distributed around the round hole 6 at equal intervals.
The utility model discloses the side of hexagonal support 1 is provided with the metallic channel 7 that is used for multispectral light source circuit board 2 and no light filter camera module to walk the line, and multispectral light source circuit board 2 and the wire of no light filter camera module collect to base support 5 in through metallic channel 7, with light source control circuit board signal connection. In addition, the side of the hexagonal bracket 1 is provided with a fixing hole 8 for fixing and adjusting the positions of the filter-free camera module and the multispectral light source circuit board. The screw nut matched with the position-adjustable screw nut is used for fixing and adjusting the positions of the filter-free camera module and the multispectral light source circuit board 2 through the fixing hole 8, so that the optimal illumination distance and shooting distance can be conveniently adjusted, and the subsequent three-dimensional reconstruction effect can be ensured.
The utility model discloses a finger support is including the finger support frame 9 that is used for supporting the finger and the baffle frame 10 that is used for preventing to point the front and back large distance removal, and wherein, finger support frame 9 and baffle frame 10 set up the both sides at hexagon support 1 relatively. The top end of the finger supporting frame 9 is set to be an arc-shaped top end 9.1 which is convenient for fingers to place. The baffle plate frame 10 is higher than the handheld support frame 9, and an arc hole 10.1 is arranged at the position opposite to the arc top end 9.1 of the finger support frame and used for positioning the finger tip.
In subsequent application, the light source control circuit board is connected to an upper computer through a serial port, and the upper computer sends a control instruction to control the near-infrared light-emitting diode lamp 3 and the visible light-emitting diode 4 on the multispectral light source circuit board 2. And meanwhile, 6 leads of the camera modules without the filter plates are also connected with an upper computer. The host computer is personal desktop computer, and the host computer has 6 image acquisition interfaces and is used for connecting 6 no filter camera modules, and 1 serial ports is connected to the serial ports of light source control circuit board in addition.
The utility model discloses many visual angles multispectral finger collection system is like this work:
when a finger is placed at the top end 9.1 of the circular arc and extends into the hexagonal support 1, 1 group of near-infrared light-emitting diode lamps 3 in 6 multispectral light source circuit boards 2 are on, the non-filter camera modules at the opposite side of the multispectral light source circuit boards collect finger vein images of the finger, a plurality of visible light-emitting diodes 4 distributed at equal intervals in a ring shape are further arranged on the multispectral light source circuit boards 2, each visible light-emitting diode 4 is sequentially on for a time period, the 3 non-filter camera modules at the same position as the multispectral light source circuit boards 1 and at two adjacent positions collect visible light images reflected by the surface of the finger, and the visible light images are used for three-dimensional reconstruction of the surface of the subsequent finger.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (10)
1. A multi-view multispectral finger collecting device is characterized in that: the device comprises a multi-view acquisition module and a base module; the multi-view acquisition module consists of a polygonal bracket, a plurality of camera modules without filter plates, a plurality of multispectral light source circuit boards and screws and nuts for matching with adjustable positions; the camera module without the filter is connected with the multispectral light source circuit board and then fixed on the inner wall of the polygonal bracket through screws and nuts, so that the fingers can be subjected to image acquisition in a surrounding mode; the multispectral light source circuit board is provided with a near-infrared light-emitting diode lamp and a visible light-emitting diode; the number of the filter-free camera modules and the multispectral light source circuit boards is equal to the number of the edges of the polygonal bracket;
the base module comprises a base support, a light source control circuit board and a finger support for placing fingers; the base support is connected with the polygonal support; the finger supports are connected with the base support and positioned on two sides of the polygonal support; the light source control circuit board is arranged in the base support and is respectively in signal connection with the filter-free camera module and the multispectral light source circuit board.
2. The multi-view multispectral finger capture device according to claim 1, wherein: the multispectral light source circuit board is provided with a round hole, and a collecting assembly of the camera module without the filter extends out of the round hole to the polygonal support.
3. The multi-view multispectral finger capture device according to claim 2, wherein: the collection assembly of the filter-free camera module consists of a filter-free lens and a wide-spectrum gray scale camera module.
4. The multi-view multispectral finger capture device according to claim 1, wherein: the near-infrared light-emitting diode lamps are arranged on the multispectral light source circuit board along the axial direction of the fingers and are arranged in a straight shape.
5. The multi-view multispectral finger capture device according to claim 2, wherein: the visible light emitting diodes are annularly distributed around the circular hole at equal intervals.
6. The multi-view multispectral finger capture device according to claim 1, wherein: the side surface of the polygonal support is provided with a wire groove for routing the multispectral light source circuit board and the filter-free camera module, and wires of the multispectral light source circuit board and the filter-free camera module are collected into the base support through the wire groove and are in signal connection with the light source control circuit board.
7. The multi-view multispectral finger capture device according to claim 1, wherein: and the side surface of the polygonal support is provided with a fixing hole for fixing and adjusting the positions of the filter-free camera module and the multispectral light source circuit board.
8. The multi-view multispectral finger capture device according to claim 1, wherein: the finger support comprises a finger support frame for supporting fingers and a baffle frame for preventing the fingers from moving back and forth by a large distance; the finger support frame and the baffle frame are oppositely arranged on two sides of the polygonal support.
9. The multi-view multispectral finger capture device according to claim 8, wherein: the top end of the finger support frame is provided with an arc-shaped top end convenient for placing fingers.
10. The multi-view multispectral finger capture device according to claim 8, wherein: the baffle frame is higher than the handheld support frame, and an arc hole is formed in the position, opposite to the arc top end of the finger support frame, of the baffle frame and used for positioning finger tips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922010443.XU CN211124067U (en) | 2019-11-20 | 2019-11-20 | Multi-view multispectral finger collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922010443.XU CN211124067U (en) | 2019-11-20 | 2019-11-20 | Multi-view multispectral finger collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211124067U true CN211124067U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922010443.XU Active CN211124067U (en) | 2019-11-20 | 2019-11-20 | Multi-view multispectral finger collecting device |
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| Country | Link |
|---|---|
| CN (1) | CN211124067U (en) |
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- 2019-11-20 CN CN201922010443.XU patent/CN211124067U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220525 Address after: 510530 No. 39, Ruihe Road, Huangpu District, Guangzhou, Guangdong Patentee after: Guangzhou Guangda Innovation Technology Co.,Ltd. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: SOUTH CHINA University OF TECHNOLOGY |