CN210776731U - Image acquisition and identification mechanism for fingerprints and palmprints - Google Patents
Image acquisition and identification mechanism for fingerprints and palmprints Download PDFInfo
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- CN210776731U CN210776731U CN201922146275.7U CN201922146275U CN210776731U CN 210776731 U CN210776731 U CN 210776731U CN 201922146275 U CN201922146275 U CN 201922146275U CN 210776731 U CN210776731 U CN 210776731U
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- 238000009434 installation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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Abstract
An image collecting and identifying mechanism for fingerprint and palm print. Belonging to the field of image acquisition. The utility model discloses an image acquisition of fingerprint and palm line, identification mechanism, the upper surface mid-mounting of bottom plate (3) is vice (7) of a screw nut, the top of screw nut vice (7) is connected to the lower surface of upper cover plate (1 a) of dustcoat supporter (1), the upper surface of bottom plate (3) is located one side-mounting light projecting frame (5) of screw nut vice (7), the upper surface of bottom plate (3) is located opposite side installation sliding guide (4) of screw nut vice (7), the lower surface of supreme apron (1 a) is connected at the top of sliding guide (4), sliding mounting image acquisition equipment (6) on sliding guide (4), the shooting end of image acquisition equipment (6) is located the perpendicular top of light projecting frame (5). The utility model has the advantages of easy operation, the gained image is clear.
Description
Technical Field
The utility model relates to an image acquisition device, a fingerprint and palm print image acquisition, identification mechanism of special design.
Background
Palm print recognition technology is an emerging biometric identification technology. Compared with other identification methods, the palm print identification has the following characteristics: the area is large and contains more information than the fingerprint; the lines are various in types and high in precision; the requirement on environment is lower than that of face recognition, and the face recognition is easy to collect; compared with iris equipment, the equipment has low precision requirement and low cost; the method can be suitable for different application occasions such as high resolution, low resolution and the like, and can be fused with the palm vein features to further improve the system identification precision. Therefore, the palm print feature recognition is superior to other existing feature recognition methods in terms of stability, safety, user acceptance and the like.
The two-dimensional palm print image contains abundant texture information, but the two-dimensional palm print image is easy to forge and is more susceptible to illumination changes. The three-dimensional palm print image contains depth information of the palm print surface, is less influenced by factors such as illumination and the like, and overcomes the defect of the two-dimensional palm print image.
The palm print is a palm print image from the end of a finger to the wrist, the shape of the palm print is controlled by a genetic gene, and even if the epidermis peels off for some reason, the new palm print line still keeps the original shape. The lines of the palmprint of each individual are different, and even if the palmprints are of the same twin, the palmprints are similar but not identical. So many features in the palm print can be used for identification: such as lines, wrinkles, fine texture, ridge endings, bifurcation points, etc.
The traditional palm print measurement is to press the palm of a person on a flat plate, so that the acquired data is only a planar two-dimensional image, and the palm print is difficult to deform and distort in the pressing process, so that the authenticity of the acquired result is influenced to a certain extent. Therefore, the utility model discloses the creation will provide a palm print and fingerprint simultaneous acquisition's equipment for obtain the three-dimensional stereograph of fingerprint, palm print, thereby be convenient for subsequent discernment and analysis.
Disclosure of Invention
The utility model aims at providing an image acquisition, recognition mechanism of fingerprint and palm print.
The above purpose is realized by the following technical scheme:
a fingerprint and palm print image acquisition and identification mechanism comprises: the device comprises a housing supporting body, a front sliding plate, a bottom plate, a sliding guide rail, a light projection frame, image acquisition equipment and a lead screw and nut pair;
the middle part of the upper surface of the bottom plate is provided with a lead screw nut pair, the top end of the lead screw nut pair is connected to the lower surface of the upper cover plate of the outer cover supporting body, the upper surface of the bottom plate is positioned on one side of the lead screw nut pair and is provided with a light projection frame, the upper surface of the bottom plate is positioned on the other side of the lead screw nut pair and is provided with a sliding guide rail, the top of the sliding guide rail is connected to the lower surface of the upper cover plate, image acquisition equipment is arranged on the sliding guide rail in a sliding mode, and the shooting end;
the outer cover supporting body is used for sleeving the sliding guide rail, the light projecting frame, the image acquisition equipment and the screw nut pair inside;
the operating surface of the housing support body is movably provided with a front sliding plate.
Has the advantages that:
1. the utility model discloses an in the use, can extract the three-dimensional data of three-dimensional fingerprint and the palm print of measurand under the condition of not contacting with image acquisition equipment. The defect that the two-dimensional palm print image is easy to forge by others is overcome.
2. The utility model discloses an it is all very convenient to use the operation, through sliding plate before sliding open, adjusts the light projection support to suitable height, adjusts the height of camera, can begin to carry out image acquisition work, supplements illumination intensity when fingerprint, palm print image information gather through the light ring of throwing, improves the definition of the picture of gathering.
3. After the measurement is finished, all equipment is closed, the front sliding plate slides down along the guide sliding groove, dust, sundries and the like can be prevented from entering the box body, and the maintenance time and cost are reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the present invention with the cover support removed;
FIG. 3 is a schematic structural diagram of the bottom plate of the present invention;
fig. 4 is a schematic structural diagram of the image capturing device of the present invention;
fig. 5 is a schematic structural diagram of the image capturing device of the present invention;
FIG. 6 is a schematic structural view of the light projection frame of the present invention;
fig. 7 is a schematic structural view of the slide rail of the present invention;
FIG. 8 is a schematic structural view of a screw nut pair of the present invention;
fig. 9 is a top view of the present invention;
fig. 10 is a schematic view of the structure of the present invention in use.
Detailed Description
The first embodiment is as follows:
the image collecting and identifying mechanism for fingerprints and palmprints of the present embodiment, as shown in fig. 1 and fig. 2, comprises an outer cover support body 1, a front sliding plate 2, a bottom plate 3, a sliding guide rail 4, a light projecting frame 5, an image collecting device 6, and a screw-nut pair 7;
a screw nut pair 7 is installed in the middle of the upper surface of the bottom plate 3, the top end of the screw nut pair 7 is connected to the lower surface of an upper cover plate 1a of the outer cover supporting body 1, a light projecting frame 5 is installed on one side, located on the screw nut pair 7, of the upper surface of the bottom plate 3, a sliding guide rail 4 is installed on the other side, located on the screw nut pair 7, of the upper surface of the bottom plate 3, the top of the sliding guide rail 4 is connected to the lower surface of the upper cover plate 1a, an image collecting device 6 is installed on the sliding guide rail 4 in a sliding mode, and the shooting end of the image collecting device 6;
the outer cover supporting body 1 is internally sleeved with the sliding guide rail 4, the light projecting frame 5, the image acquisition equipment 6 and the screw-nut pair 7;
the front sliding plate 2 is movably mounted on the operation surface of the housing support body 1.
The second embodiment is as follows:
different from the first embodiment, in the image capturing and identifying mechanism for fingerprints and palm prints of the present embodiment, as shown in fig. 3, the bottom plate 3 includes a bottom mounting plate 3a and 4 leveling legs 3 b; and 4 leveling machine feet 3b are fixed at four corners of the lower surface of the bottom mounting plate 3 a.
The third concrete implementation mode:
different from the second embodiment, in the image capturing and identifying mechanism for fingerprints and palm prints of the present embodiment, as shown in fig. 4 and 5, the image capturing device 6 includes a supporting arm 6a, an image capturing fixing frame 6b, an image capturing device 6c, and a capturing camera 6 d; the supporting arm 6a is connected with an image acquisition fixing frame 6b, an image collector 6c is embedded in the image acquisition fixing frame 6b, an acquisition camera 6d is installed on the image collector 6c, and the supporting arm 6a is connected to the sliding guide rail 4 through a screw; a positioning hole 6a1 is formed on the supporting arm 6 a; wherein,
one side surface of the image collector 6c is provided with a connecting bayonet 6c1, and the camera 6d is arranged on the image collector 6c through the connecting bayonet 6c 1.
The fourth concrete implementation mode:
different from the third embodiment, in the fingerprint and palm print image capturing and identifying mechanism of the present embodiment, as shown in fig. 6, the light projecting frame 5 includes a light projecting ring 5a, an adjusting bracket 5b and an adjusting knob 5c, the adjusting bracket 5b is installed at the lower end of the light projecting ring 5a, the adjusting knob 5c is installed at the side surface of the adjusting bracket 5b, and the adjusting knob 5c is used for adjusting the height of the bracket 5 b.
The fifth concrete implementation mode:
in a fingerprint and palm print image capturing and recognizing mechanism according to the present embodiment, as shown in fig. 7, the sliding guide 4 includes a slider 4a and a guide 4b, the slider 4a slides on the guide 4b, and the slider 4a is provided with a threaded hole for connecting with the supporting arm 6 a.
The sixth specific implementation mode:
different from the fifth embodiment, in the image capturing and recognizing mechanism for fingerprints and palm prints of the present embodiment, as shown in fig. 8, the screw-nut pair 7 includes a fixing support 7a, a screw 7b and a nut 7c, the fixing support 7a is installed at two ends of the screw 7b, the fixing support 7a at the top end is fixed on the upper cover plate 1a, the fixing support 7a at the bottom end is fixed on the upper surface of the bottom mounting plate 3a, the nut 7c is installed on the screw 7b, and the bottom of the nut 7c is matched with the connecting bayonet 6c1 of the image capturing device 6 c.
The seventh embodiment:
in contrast to the sixth embodiment, in the fingerprint and palm print image capturing and recognizing mechanism according to the present embodiment, as shown in fig. 9, guide sliding grooves 1b1 are formed at the edges of the outer cover side plates 1b on both sides of the operation surface of the outer cover support 1, and the front sliding plate 2 is capable of reciprocating sliding along the guide sliding grooves 1b 1.
The working principle is as follows:
in the using process, the finger and palm print image recognition mechanism is firstly placed on a horizontal workbench, the sliding plate 2 slides upwards along the guide sliding groove 1b1 before sliding, the adjusting light projection bracket 5b is adjusted to a proper height by rotating the adjusting knob 5c, then the screw nut pair 7 drives the sliding guide rail 4 to move along the guide rail 4b, the height of the camera 6d is adjusted, and the finger and palm print image recognition mechanism starts to work after all the heights and positions are adjusted.
The palm of the tested person is opened and placed below the acquisition camera 6 d. And (3) opening the LED luminescent lamp on the light projecting ring 5a, supplementing light to the palm image acquisition of the detected person, and simultaneously adjusting the focal length and the aperture of the lens 6d to achieve the best acquisition effect and then start to detect. When all the adjustment is finished, the palm print information of the tested person can be recorded and identified by the image collector 6c on the upper part of the camera 6d, and the tested data can be transmitted to a computer through a data line.
After the measurement is finished, all the devices are closed, the front sliding plate 2 slides down along the guide sliding groove 1b1, so that dust, sundries and the like are prevented from entering the box body, and then the box body is taken away for storage for the next use. Fig. 10 is an operation state diagram of the finger-palm print image recognition mechanism.
Claims (7)
1. The utility model provides an image acquisition of fingerprint and palm print, recognition mechanism which characterized in that: the device comprises an outer cover supporting body (1), a front sliding plate (2), a bottom plate (3), a sliding guide rail (4), a light projecting frame (5), image acquisition equipment (6) and a screw-nut pair (7);
a screw nut pair (7) is installed in the middle of the upper surface of the bottom plate (3), the top end of the screw nut pair (7) is connected to the lower surface of an upper cover plate (1 a) of the outer cover supporting body (1), a light projecting frame (5) is installed on one side, located on the screw nut pair (7), of the upper surface of the bottom plate (3), a sliding guide rail (4) is installed on the other side, located on the screw nut pair (7), of the upper surface of the bottom plate (3), the top of the sliding guide rail (4) is connected to the lower surface of the upper cover plate (1 a), an image collecting device (6) is installed on the sliding guide rail (4) in a sliding mode, and the shooting end of the image collecting device (6) is located above the light;
the outer cover supporting body (1) is used for sleeving the sliding guide rail (4), the light projecting frame (5), the image acquisition equipment (6) and the screw-nut pair (7) inside;
the operation surface of the outer cover supporting body (1) is movably provided with a front sliding plate (2).
2. The image capturing and identifying mechanism for fingerprint and palm print as claimed in claim 1, wherein: the fingerprint and palm print image acquisition and identification mechanism is characterized in that a bottom plate (3) comprises a bottom mounting plate (3 a) and 4 leveling machine feet (3 b); 4 leveling machine feet (3 b) are fixed at four corners of the lower surface of the bottom mounting plate (3 a).
3. The image capturing and identifying mechanism for fingerprint and palm print as claimed in claim 2, wherein: the image acquisition equipment (6) comprises a supporting arm (6 a), an image acquisition fixing frame (6 b), an image acquisition device (6 c) and an acquisition camera (6 d); the supporting arm (6 a) is connected with the image acquisition fixing frame (6 b), an image collector (6 c) is embedded in the image acquisition fixing frame (6 b), an acquisition camera (6 d) is installed on the image collector (6 c), and the supporting arm (6 a) is connected to the sliding guide rail (4) through a screw; positioning holes (6 a 1) are processed on the supporting arm (6 a); wherein,
one side surface of the image collector (6 c) is provided with a connecting bayonet (6 c 1), and the camera (6 d) is arranged on the image collector (6 c) through the connecting bayonet (6 c 1).
4. The image capturing and identifying mechanism for fingerprint and palm print as claimed in claim 3, wherein: the light projection frame (5) comprises a light projection ring (5 a), an adjusting support (5 b) and an adjusting knob (5 c), the adjusting support (5 b) is installed at the lower end of the light projection ring (5 a), the adjusting knob (5 c) is installed on the side face of the adjusting support (5 b), and the adjusting knob (5 c) is used for adjusting the height of the adjusting support (5 b).
5. The image capturing and identifying mechanism for fingerprint and palm print as claimed in claim 4, wherein: the sliding guide rail (4) comprises a sliding block (4 a) and a guide rail (4 b), the sliding block (4 a) slides on the guide rail (4 b), and a threaded hole is machined in the sliding block (4 a) and used for being connected with the supporting arm (6 a).
6. The image capturing and identifying mechanism for fingerprint and palm print as claimed in claim 5, wherein: screw-nut pair (7) include fixing support (7 a), lead screw (7 b) and nut (7 c), the both ends at lead screw (7 b) are installed in fixing support (7 a), fixing support (7 a) on top are fixed on upper cover plate (1 a), fixing support (7 a) of bottom are fixed in the upper surface of bottom mounting panel (3 a), install nut (7 c) on lead screw (7 b), the bottom of nut (7 c) and image collector (6 c) be connected bayonet socket (6 c 1) cooperation.
7. The image capturing and identifying mechanism for fingerprint and palm print as claimed in claim 6, wherein: the edge of the outer cover body side plate (1 b) at two sides of the operation surface of the outer cover support body (1) is provided with a guide sliding groove (1 b 1), and the front sliding plate (2) can slide back and forth along the guide sliding groove (1 b 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922146275.7U CN210776731U (en) | 2019-12-04 | 2019-12-04 | Image acquisition and identification mechanism for fingerprints and palmprints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922146275.7U CN210776731U (en) | 2019-12-04 | 2019-12-04 | Image acquisition and identification mechanism for fingerprints and palmprints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210776731U true CN210776731U (en) | 2020-06-16 |
Family
ID=71047647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922146275.7U Expired - Fee Related CN210776731U (en) | 2019-12-04 | 2019-12-04 | Image acquisition and identification mechanism for fingerprints and palmprints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210776731U (en) |
-
2019
- 2019-12-04 CN CN201922146275.7U patent/CN210776731U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20201204 |