Multi-angle face image acquisition device

Abstract

The utility model relates to the technical field of portrait acquisition equipment, in particular to a multi-angle face image acquisition device, which comprises an acquisition bin, the acquisition bin comprises a base, a top plate is mounted above the base through a background plate, and an acquisition component is mounted between the top plate and the base and positioned in front of the background plate through an adjusting device. According to the utility model, the positioning assembly is arranged, the distance measuring device is used for measuring the distance between the head and shoulders of a person and the top plate, and the height of a position needing acquisition is obtained; the rotating motor drives the semicircular support to rotate so as to drive the camera to rotate forwards to the position right in front of the human body, the lifting motor drives the adjusting screw on the right side to rotate, the chain transmission device synchronously drives the adjusting screw on the left side to rotate, and therefore the lifting sliding block is driven to move. Therefore, the cameras are driven to move to the front of the human face through the adjusting sliding block, multi-angle human face image collection is completed through the cameras arranged in a semicircular mode, adjustment is easy and convenient, and the collection speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of portrait acquisition equipment, in particular to a multi-angle face image acquisition device. Background Art

[0002] Face image acquisition, that is, the acquisition of facial feature information, is generally used for identity authentication, such as ID cards, student cards, access control systems, etc. The face is innate, just like other biological features of the human body, such as fingerprints and irises, and is unique and difficult to be copied. This good feature provides the necessary premise for identity authentication. When devices such as access control use the face as an identification feature, its recognition accuracy is affected by angle, light, recognition angle, etc. In order to improve recognition accuracy, it is necessary to collect facial image information from multiple angles.

[0003] Application number 202221475504.5 provides a multi-angle face image acquisition device, which is driven by a motor to rotate the rotating shaft and gears, and the ring gear is engaged with the gears to rotate the ring gears, so that the acquisition device support mechanism on which the acquisition device is installed rotates around the seat to perform multi-directional and multi-angle image acquisition of the person being acquired.

[0004] Although the device can realize multi-angle acquisition of facial images, the height adjustment of the camera requires manual adjustment by the operator, the adjustment method is not simple enough, and the acquisition time is relatively long. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a multi-angle face image acquisition device.

[0006] The technical solution of the utility model is:

[0007] A multi-angle face image acquisition device, comprising:

[0008] The collection chamber comprises a base, a top plate is installed above the base through a background plate, a collection seat is provided on the top surface of the base, a positioning component is provided just above the collection seat and below the top plate, the positioning component is used to measure the distance from the top of a person's head and shoulders to the bottom surface of the top plate, and a collection component is installed between the top plate and the base and in front of the background plate through an adjustment device;

[0009] The acquisition component includes a semicircular bracket, a plurality of cameras are evenly arranged inside the semicircular bracket, the cameras face the center of the semicircular bracket, and the cameras are used to acquire facial images;

[0010] The adjusting device comprises a rotating adjusting component and a lifting component. The rotating adjusting component is connected to the semicircular bracket for driving the semicircular bracket to rotate. The lifting component is connected to the rotating adjusting component for driving the rotating adjusting component to rise and fall, thereby driving the semicircular bracket to rise and fall.

[0011] Preferably, the positioning assembly includes a positioning plate, which is fixedly mounted at the center of the bottom surface of the top plate. A plurality of distance measuring devices are evenly arranged on the side of the positioning plate facing the collection seat, and the distance measuring devices are used to measure the distance from the top of a person's head and shoulders to the bottom surface of the top plate.

[0012] Preferably, a fill light is provided inside the semicircular bracket and between the cameras, and the fill light is used for auxiliary lighting.

[0013] Preferably, rotation shafts are provided on the outer sides of both ends of the semicircular bracket, and the rotation shafts are connected to the rotation adjustment assembly.

[0014] Preferably, the rotation adjustment assembly includes two adjustment sliders, a rotation motor is provided on the outer side of the left adjustment slider, an output shaft of the rotation motor is connected to the rotation shaft, and the adjustment slider is connected to the lifting assembly via a lifting slider.

[0015] Preferably, the lifting assembly includes an adjusting screw and an adjusting slide rod, the adjusting screw is threadedly connected to the lifting slide block, and the adjusting slide rod is slidably connected to the lifting slide block.

[0016] Preferably, the head of the adjusting screw passes through the top plate and is connected to a chain transmission device, and the top of the adjusting screw on the right side is connected to a lifting motor through a gear transmission device.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a positioning component and uses a distance measuring device to measure the distance from the top of a person's head and shoulders to a top plate, thereby obtaining the height of the position where the image needs to be collected; a rotating motor is used to drive the semicircular bracket to rotate, thereby driving the camera to rotate forward to the front of the human body; a lifting motor is used to drive the right adjusting screw to rotate, and a chain transmission device is used to synchronously drive the left adjusting screw to rotate, thereby driving the lifting slider to move, and then the camera is driven to move to the front of the human face through the adjusting slider, and the cameras arranged in a semicircle are used to complete the multi-angle face image collection, which is simple to adjust and has a fast collection speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the collection bin in the utility model;

[0021] Figure 3 This is a schematic diagram of the second structure of the collection bin in the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the acquisition component in the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the regulating device in the utility model.

[0024] The meaning of each number in the figure is:

[0025] 1. Collection chamber; 11. Base; 12. Background plate; 13. Front support plate; 14. Closing plate; 15. Top plate; 16. Collection seat; 17. Positioning plate; 18. Distance measuring device;

[0026] 2. Collection component; 21. Camera; 22. Semicircular bracket; 23. Fill light; 24. Rotation axis;

[0027] 3. Adjusting device; 31. Adjusting slider; 32. Rotating motor; 33. Lifting slider; 34. Adjusting screw; 35. Adjusting slide bar; 36. Lifting motor; 37. Gear transmission device; 38. Chain transmission device. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-5 The utility model describes the above technical solution in detail through the following embodiments:

[0032] A multi-angle face image acquisition device, comprising:

[0033] The collection chamber 1 includes a base 11, a top plate 15 is installed above the base 11 through a background plate 12, a collection seat 16 is provided on the top surface of the base 11, a positioning component is provided directly above the collection seat 16 and below the top plate 15, and the positioning component is used to measure the distance from the top of a person's head and shoulders to the bottom surface of the top plate 15, and a collection component 2 is installed between the top plate 15 and the base 11 and in front of the background plate 12 through an adjustment device 3.

[0034] The base 11 and the background plate 12 can be connected by bolts or welding, and the background plate 12 and the top plate 15 are connected by bolts. The collection seat 16 is fixedly installed in the center of the top surface of the base 11 by bolts, and the background plate 12 is semicircular and wraps the collection seat 16. During collection, the collected person sits on the collection seat 16.

[0035] A front support plate 13 is fixedly installed by bolts in front of the base 11 and the top plate 15 and in front of the background plate 12. The adjustment device 3 is installed in the space between the front support plate 13 and the background plate 12. A sealing plate 14 is fixedly installed on the outside of the front support plate 13 and the background plate 12 by bolts.

[0036] The sealing plate 14 is used to protect the internal adjustment device 3 .

[0037] The positioning assembly includes a positioning plate 17, which is fixedly installed at the center of the bottom surface of the top plate 15 by bolts. A plurality of distance measuring devices 18 are evenly fixedly installed by screws on the side of the positioning plate 17 facing the collection seat 16. The distance measuring devices 18 are used to measure the distance from the top of a person's head and shoulders to the bottom surface of the top plate 15.

[0038] The distance measuring device 18 can be a known infrared or laser distance measuring device. Three distance measuring devices 18 form a group, and there are three groups in total. The three groups of distance measuring devices 18 are arranged in parallel from left to right. The person being collected sits on the collection seat 16, and the middle distance measuring device 18 faces the top of the person being collected, and the distance measuring devices 18 on both sides face the shoulders of the person being collected. The distance from the top of the head and shoulders of the person being collected to the top plate 15 can be measured respectively, so as to obtain the height information of the face of the person being collected.

[0039] The collection component 2 includes a semicircular bracket 22, and a plurality of cameras 21 are evenly arranged inside the semicircular bracket 22. The cameras 21 face the center of the semicircular bracket 22, and the cameras 21 are used to collect facial images. Rotation shafts 24 are arranged outside at both ends of the semicircular bracket 22.

[0040] The semicircular bracket 22 can be a metal bracket or a plastic bracket. The center of the semicircular bracket 22 is located on the line connecting the center of the collection seat 16 and the positioning plate 17. The camera 21 can be a known camera device. There are five cameras 21, which can simultaneously collect facial images from the front, left and right 45° and left and right 90° directions.

[0041] A fill light 23 is provided inside the semicircular bracket 22 and between the cameras 21 , and the fill light 23 is used for auxiliary lighting.

[0042] The fill light 23 adopts a strip-shaped LED light-emitting module, which can provide an additional light source when capturing portraits, thereby ensuring the accuracy of facial image capture.

[0043] The adjusting device 3 includes a rotation adjusting component and a lifting component. The rotation adjusting component is connected to the semicircular bracket 22 for driving the semicircular bracket 22 to rotate. The lifting component is connected to the rotation adjusting component for driving the rotation adjusting component to rise and fall, thereby driving the semicircular bracket 22 to rise and fall. The rotation shaft 24 is connected to the rotation adjusting component.

[0044] The rotation adjustment assembly drives the semicircular bracket 22 to rotate via the rotation shaft 24 .

[0045] The rotation adjustment assembly includes two adjustment sliders 31 . A rotation motor 32 is fixedly installed on the outer side of the left adjustment slider 31 by screws. The output shaft of the rotation motor 32 is connected to the rotation shaft 24 . The adjustment slider 31 is connected to the lifting assembly through a lifting slider 33 .

[0046] The semicircular bracket 22 is rotatably connected to the adjusting slider 31 via the rotating shaft 24, and the output shaft of the rotating motor 32 is fixedly connected to the rotating shaft 24 on the left side via a coupling. The rotating motor 32 is a stepping motor or a servo motor.

[0047] The rotating motor 32 can drive the semicircular bracket 22 to rotate through the rotating shaft 24, thereby driving the camera 21 to rotate. It should be noted that the semicircular bracket 22 rotates half a circle each time, and rotates from the top.

[0048] The lifting assembly includes an adjusting screw 34 and an adjusting slide bar 35 . The adjusting screw 34 is threadedly connected to the lifting slider 33 , and the adjusting slide bar 35 is slidably connected to the lifting slider 33 .

[0049] The two ends of the adjusting slide bar 35 are fixedly connected to the base 11 and the top plate 15 respectively, and the bottom end of the adjusting screw 34 is rotatably connected to the base 11. Since the adjusting screw 34 is threadedly connected to the lifting slider 33, and the adjusting slide bar 35 is slidably connected to the lifting slider 33, when the adjusting screw 34 rotates, the lifting slider 33 can be driven to move along the axis direction of the adjusting screw 34, and at the same time slide along the axis direction of the adjusting slide bar 35, thereby driving the adjusting slider 31 to move.

[0050] The head of the adjusting screw 34 passes through the top plate 15 and is connected to a chain transmission device 38 , and the top of the right adjusting screw 34 is connected to a lifting motor 36 through a gear transmission device 37 .

[0051] The lifting motor 36 is a stepper motor or a servo motor, and the gear transmission device 37 is two mutually meshing bevel gears. The lifting motor 36 can drive the right adjusting screw 34 to rotate through the gear transmission device 37, thereby driving the other adjusting screw 34 to rotate together through the chain transmission device 38. The two adjusting screws 34 rotate synchronously and in the same direction.

[0052] When the operator of this embodiment uses this device, the person being collected sits on the collection seat 16 and keeps the back and neck straight.

[0053] The distance from the top of the head and shoulders of the collector to the top plate 15 is measured by the distance measuring device 18 .

[0054] The lifting motor 36 is started, and the right adjusting screw 34 is driven to rotate by the lifting motor 36, thereby driving the other adjusting screw 34 to rotate together through the chain transmission device 38. The lifting slider 33 is driven to move along the axis direction of the adjusting screw 34 by the rotation of the adjusting screw 34, thereby driving the adjusting slider 31 to move, and then driving the semicircular bracket 22 and the camera 21 to move up and down until the height of the camera 21 is between the head and shoulders of the collector.

[0055] The rotating motor 32 is started to drive the semicircular bracket 22 to rotate forward 180° through the rotating shaft 24, thereby driving the camera 21 to rotate to the front of the person being collected.

[0056] Five cameras 21 arranged in a semicircle are used to capture images of the face of the person being captured from five angles.

[0057] At the same time, the fill light 23 is turned on to increase the light brightness.

[0058] After the collection is completed, the fill light 23 is turned off, and the rotating motor 32 is started again, and the semicircular bracket 22 is driven to rotate 180° from the top to the rear through the rotating shaft 24. The collected person leaves the collection seat 16, and the next person can continue.

[0059] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-angle face image acquisition device, characterized in that: include: A collection chamber (1), the collection chamber (1) comprising a base (11), a top plate (15) being installed above the base (11) via a background plate (12), a collection seat (16) being provided on the top surface of the base (11), a positioning component being provided just above the collection seat (16) and below the top plate (15), the positioning component being used to measure the distance from the top of a person's head and shoulders to the bottom surface of the top plate (15), and a collection component (2) being installed between the top plate (15) and the base (11) and in front of the background plate (12) via an adjustment device (3); The acquisition component (2) comprises a semicircular bracket (22), a plurality of cameras (21) are evenly arranged on the inner side of the semicircular bracket (22), the cameras (21) face the center of the semicircular bracket (22), and the cameras (21) are used to acquire facial images; The adjusting device (3) comprises a rotation adjusting component and a lifting component. The rotation adjusting component is connected to the semicircular bracket (22) and is used to drive the semicircular bracket (22) to rotate. The lifting component is connected to the rotation adjusting component and is used to drive the rotation adjusting component to rise and fall, thereby driving the semicircular bracket (22) to rise and fall.

2. The multi-angle face image acquisition device according to claim 1, characterized in that: The positioning assembly comprises a positioning plate (17), wherein the positioning plate (17) is fixedly mounted at the center of the bottom surface of the top plate (15), and a plurality of distance measuring devices (18) are evenly arranged on the side of the positioning plate (17) facing the collection seat (16), wherein the distance measuring devices (18) are used to measure the distance from the top of a person's head and shoulders to the bottom surface of the top plate (15).

3. The multi-angle face image acquisition device according to claim 1, characterized in that: A fill light (23) is provided inside the semicircular bracket (22) and between the cameras (21), and the fill light (23) is used for auxiliary lighting.

4. The multi-angle face image acquisition device according to claim 3, characterized in that: Rotation shafts (24) are provided on the outer sides of both ends of the semicircular bracket (22), and the rotation shafts (24) are connected to the rotation adjustment component.

5. The multi-angle face image acquisition device according to claim 4, characterized in that: The rotation adjustment component comprises two adjustment sliders (31), a rotation motor (32) is arranged outside the left adjustment slider (31), an output shaft of the rotation motor (32) is connected to the rotation shaft (24), and the adjustment slider (31) is connected to the lifting component via a lifting slider (33).

6. The multi-angle face image acquisition device according to claim 5, characterized in that: The lifting assembly comprises an adjusting screw (34) and an adjusting slide bar (35); the adjusting screw (34) is threadedly connected to the lifting slide bar (33); and the adjusting slide bar (35) is slidably connected to the lifting slide bar (33).

7. The multi-angle face image acquisition device according to claim 6, characterized in that: The head of the adjusting screw (34) passes through the top plate (15) and is connected to a chain transmission device (38). The top of the adjusting screw (34) on the right side is connected to a lifting motor (36) through a gear transmission device (37).

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