CN212749858U - Imaging consistency detection device for finger vein equipment - Google Patents
Imaging consistency detection device for finger vein equipment Download PDFInfo
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- CN212749858U CN212749858U CN202021493352.2U CN202021493352U CN212749858U CN 212749858 U CN212749858 U CN 212749858U CN 202021493352 U CN202021493352 U CN 202021493352U CN 212749858 U CN212749858 U CN 212749858U
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- finger vein
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- 210000003462 vein Anatomy 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000003384 imaging method Methods 0.000 title claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The utility model discloses an imaging consistency detection device for finger vein equipment, which comprises a finger vein module, a test interface positioned at one side of the finger vein module and a detection component for detection; the finger vein module is used for collecting patterns, the test interface is used for connecting the finger vein module with an external computer, the detection assembly comprises a fixed support, a light source and a standard test chart, the light source is located on the fixed support, the standard test chart is used for detecting, and the standard test chart corresponds to the finger vein module in position. The utility model discloses can detect the image quality of finger vein equipment, including definition, grey scale and variance etc, confirm the formation of image uniformity of different finger vein equipment through the image of standard test chart, the accuracy is high, has promoted the uniformity and the yields of finger vein equipment.
Description
Technical Field
The utility model belongs to the technical field of finger vein equipment detects, especially, relate to an formation of image uniformity detection device for finger vein equipment.
Background
Compared with the traditional fingerprint equipment, the finger vein equipment has the advantages of secret biological characteristics, living bodies, difficult damage to characteristics and the like, and is widely applied to the field of identity authentication with high safety and low power consumption requirements such as entrance guard, attendance, safe cases, door locks and the like.
The finger vein equipment has strict requirements on an optical path, and because the tolerance of the recognition algorithm on the difference of imaging of different finger vein equipment is limited during design, different finger vein equipment should keep good consistency on imaging quality, so that the imaging consistency of different finger vein equipment needs to be detected.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides an formation of image uniformity detection device for finger vein equipment to solve the problem that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the imaging consistency detection device for the finger vein equipment comprises a finger vein module, a test interface positioned on one side of the finger vein module and a detection component for detection; the finger vein detection device is characterized in that an image sensor is arranged in the finger vein module, the finger vein module is used for collecting patterns, the test interface is used for connecting the finger vein module with an external computer, the detection assembly comprises a fixed support, a light source and a standard test chart, the light source is located on the fixed support, the standard test chart is used for detecting, and the standard test chart corresponds to the finger vein module in position.
In a preferred embodiment of the present invention, the finger vein module is provided with a detection position, and the detection position and the standard test chart are located on the same line.
In a preferred embodiment of the present invention, a camera is disposed below the finger vein module, and the camera can take a picture of the standard test chart.
In a preferred embodiment of the present invention, the light source is an infrared light source.
The utility model provides a defect that exists among the background art, the utility model discloses possess following beneficial effect:
the utility model discloses can detect the image quality of finger vein equipment, including definition, grey scale and variance etc, confirm the formation of image uniformity of different finger vein equipment through the image of standard test chart, the accuracy is high, has promoted the uniformity and the yields of finger vein equipment.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;
in the figure: 1. a finger vein module; 2. a test interface; 3. a detection component; 31. fixing a bracket; 32. a light source; 33. and (5) standard test patterns.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.
As shown in fig. 1, an imaging consistency detection apparatus for a finger vein device includes a finger vein module 1, a test interface 2 located at one side of the finger vein module 1, and a detection component 3 for detection; be equipped with image sensor in the finger vein module 1, finger vein module 1 is used for gathering the pattern, and test interface 2 is connected finger vein module 1 and outside computer, and detection component 3 includes fixed bolster 31, is located light source 32 on fixed bolster 31 and is used for the standard test chart 33 that detects, and standard test chart 33 corresponds with finger vein module 1 position.
In this embodiment, the finger vein module 1 is placed under the standard test chart 33, the detection position corresponds to the position of the standard test chart 33, then the camera shoots the standard test chart 33, the picture is transmitted to an external computer through the test interface 2, the external computer calculates the parameters of definition, gray scale and variance of the picture, when the definition, the gray scale and the variance all meet the preset standard range value, the finger vein module 1 is indicated to meet the requirement of imaging consistency, and if the definition, the gray scale and the variance are not in the preset standard range value, the finger vein module 1 is indicated to not meet the requirement of imaging consistency, and needs to be adjusted.
Specifically, in the present embodiment, the detecting component 3 is used to cooperate with the finger vein module 1 to detect the finger vein module 1, the detecting component 3 is a quantitative component, and the finger vein module 1 is a variable component.
In this embodiment, the finger vein module 1 is provided with a detection position, and the detection position and the standard test chart 33 are located on the same straight line.
Specifically, a camera is arranged below the finger vein module 1, and the camera can photograph the standard test chart 33.
In the present embodiment, the light source 32 is an infrared light source.
To sum up, the utility model discloses can detect the image quality of finger vein equipment, including definition, grey scale and variance etc. confirm the formation of image uniformity of different finger vein equipment through the image of standard test chart 33, the accuracy is high, has promoted the uniformity and the yields of finger vein equipment.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The device for detecting the imaging consistency of the finger vein equipment is characterized by comprising a finger vein module, a test interface positioned on one side of the finger vein module and a detection component for detection; the finger vein detection device is characterized in that an image sensor is arranged in the finger vein module, the finger vein module is used for collecting patterns, the test interface is used for connecting the finger vein module with an external computer, the detection assembly comprises a fixed support, a light source and a standard test chart, the light source is located on the fixed support, the standard test chart is used for detecting, and the standard test chart corresponds to the finger vein module in position.
2. The device according to claim 1, wherein the finger vein module is provided with a detection position, and the detection position and the standard test chart are located on the same straight line.
3. The imaging consistency detection device for the finger vein equipment as claimed in claim 1, wherein a camera is arranged below the finger vein module, and the camera can photograph the standard test chart.
4. The apparatus according to claim 1, wherein the light source is an infrared light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493352.2U CN212749858U (en) | 2020-07-24 | 2020-07-24 | Imaging consistency detection device for finger vein equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493352.2U CN212749858U (en) | 2020-07-24 | 2020-07-24 | Imaging consistency detection device for finger vein equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212749858U true CN212749858U (en) | 2021-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021493352.2U Expired - Fee Related CN212749858U (en) | 2020-07-24 | 2020-07-24 | Imaging consistency detection device for finger vein equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212749858U (en) |
-
2020
- 2020-07-24 CN CN202021493352.2U patent/CN212749858U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |