CN212032170U

CN212032170U - Image acquisition device and face recognition system

Info

Publication number: CN212032170U
Application number: CN202020630915.1U
Authority: CN
Inventors: 方志军; 马堃; 李若岱
Original assignee: Shenzhen Sensetime Technology Co Ltd
Current assignee: Nanjing Manhou Network Technology Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-11-27
Anticipated expiration: 2030-04-23

Abstract

The embodiment of the application provides an image acquisition device and a face recognition system, wherein the image acquisition device comprises a controller, at least two horizontal guide rails and at least two image acquisition units, wherein each horizontal guide rail is provided with at least one image acquisition unit in a sliding manner; the controller controls the image acquisition unit to acquire a face image of the target object. The embodiment of the application can collect multiple face images in multiple directions and at different distances by arranging the multiple horizontal guide rails and the multiple image collecting units, so that automatic multi-angle face image collection is realized, the face image collecting effect is improved, and the accuracy and the efficiency are improved.

Description

Image acquisition device and face recognition system

Technical Field

The application relates to the technical field of image acquisition, in particular to an image acquisition device and a face recognition system.

Background

At present, in the field of image recognition, a face recognition technology is commercially used in various industries, and the travel mode and payment mode of people are changed. Image acquisition becomes more important, and the accuracy of a face recognition algorithm can be improved by real face acquisition data. The human image acquisition automation technology is improved, the human image acquisition work with low cost and high efficiency can be completed, and high-consistency and high-fidelity human image data can be acquired. At present, the human image acquisition method mainly adopts manual operation, and the quality of the acquired image is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an image acquisition device and a face recognition system, which can improve the acquisition effect of face images.

A first aspect of an embodiment of the present application provides an image capturing device, including a controller, at least two horizontal guide rails, and at least two image capturing units, where at least one of the image capturing units is slidably disposed on each of the horizontal guide rails;

the controller controls the image acquisition unit to acquire a face image of the target object.

A second aspect of the embodiments of the present application provides a face recognition system, including a terminal device and the image acquisition device of the first aspect of the embodiments of the present application, where the terminal device sends a control instruction to the controller to acquire a face image of a target object, and receives the face image acquired by the image acquisition device, so as to perform identity verification on the target object according to the face image.

According to the image acquisition device in the embodiment of the application, the image acquisition unit can shoot the face image at any position of the horizontal guide rail, so that the face image acquisition at different distances is realized, and the acquisition effect of the face image is improved. The controller can control a plurality of image acquisition units to gather many face images to realize automatic multi-angle portrait and gather, because gather the angle and gather the degree of depth difference, the face image who gathers is the multi-angle, multi-attitude, so in subsequent face identification, discernment rate of accuracy and efficiency are higher.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an image capturing device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a horizontal guide rail arrangement provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of a human image acquisition with different object distances according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an image capturing unit provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of an image capturing unit provided in an embodiment of the present application;

fig. 6 is a schematic view of a pitch acquisition of portrait acquisition provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of another image capturing unit provided in an embodiment of the present application;

fig. 8 is a schematic view of an orientation of a light supplement module relative to a target object according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a face recognition system according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, system, article, or apparatus.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an image capturing device according to an embodiment of the present disclosure. As shown in fig. 1, the image capturing apparatus 10 may include a controller 20, M horizontal rails (e.g., 121, 122, … 12M shown in fig. 1) and N image capturing units (e.g., 131, 132, … 13N shown in fig. 1), where a first image capturing unit 131 is slidably connected to a first horizontal rail 121, the first horizontal rail 121 is any one of the M horizontal rails, the first image capturing unit 131 is any one of at least one image capturing unit corresponding to the first horizontal rail 121 in the N image capturing units, M, N are positive integers greater than or equal to 2, and N is greater than or equal to M;

the controller 20 is configured to control the first image capturing unit 131 to capture a first face image.

In the embodiment of the application, the M horizontal guide rails can be distributed in any horizontal direction in which a human face can be captured. When the possible directions of the faces of the acquired target objects 30 are arbitrary, the M horizontal guide rails may be distributed in an arbitrary horizontal direction centered on the target objects 30 (as shown in fig. 2, M is equal to 12, and N is equal to 12 for example).

The horizontal guide rail may be a guide rail parallel with respect to the ground.

The controller 20 may establish a wireless communication connection (e.g., a bluetooth connection, a WiFi connection, etc.) or a wired communication connection with the N image capturing units, respectively. Wireless communication connections are exemplified in fig. 1.

The N image acquisition units can be randomly distributed on the M horizontal guide rails. For example, two or more image capturing units may be present on a horizontal rail. For another example, there is at least one image capture unit on each horizontal rail. In fig. 1, there is one image capturing unit on each horizontal guide rail as an example.

In the case where two or more image capturing units exist on one horizontal guide rail, the two or more image capturing units on the same horizontal guide rail have different distances from the target object 30.

The image acquisition unit on each horizontal guide rail can slide on the horizontal guide rail (when the image acquisition unit slides to a certain position, the image acquisition unit can be fixed on the horizontal guide rail) to adjust the distance between the image acquisition unit and the target object 30, so that the acquisition of human images (namely, human face images) at different distances is realized, the human face image information at different distances is obtained, and the acquisition effect of the human face images is improved.

Wherein, the controller 20 can control at least one image acquisition unit of the N image acquisition units to acquire the face image. The controller 20 may also control the N image capturing units to capture N face images.

The controller 20 is further configured to control the second image collecting unit 132 to collect a second face image, and control the nth image collecting unit 13N to collect an nth face image.

Because the orientation of each of the N image capturing units is different from the front face orientation of the face of the target object 30, the N image capturing units can capture a plurality of different-angle face images of the target object 30. The controller 20 of the embodiment of the application can control a plurality of image acquisition units to acquire a plurality of face images, thereby realizing automatic multi-angle face image acquisition. The image acquisition device in the embodiment of the application, first image acquisition unit and first horizontal guide rail sliding connection, first image acquisition unit can shoot the face image in the optional position of first horizontal guide rail, realizes the portrait collection of different distances, improves the collection effect of face image. The controller 20 can control the first image collecting unit to collect the first face image and can control the plurality of image collecting units to collect the plurality of face images, thereby realizing automatic multi-angle face image collection. Because the acquisition angles are different, the acquisition depths are different (namely, the distances between different acquisition units and a target object are different), and the acquired face images are multi-angle and multi-pose, the identification accuracy rate and the identification efficiency are higher in the subsequent face identification.

Wherein, the included angle between any two adjacent horizontal guide rails in the M horizontal guide rails can be the same or different.

Optionally, the included angle between any two adjacent horizontal guide rails in the M horizontal guide rails is the same. The image acquisition device can be ensured to uniformly acquire images of all angles of the human face, and the risk that the human face images of a certain angle are omitted can be avoided. For example, the included angle between any two adjacent horizontal guide rails among the M horizontal guide rails may be set to 30 degrees.

Optionally, the controller 20 is further configured to control the first image capturing unit 131 to slide on the first horizontal rail 121 to a first predetermined position, and control the first image capturing unit 131 to capture the first human face image when the first image capturing unit 131 slides in the horizontal direction along the first horizontal rail 121 to the first predetermined position.

In the embodiment of the present application, the first predetermined position may be any position on the first horizontal rail 121. The first image acquisition unit 131 can slide to any position of the first horizontal guide rail 121, so that the human images at different distances can be acquired through the first image acquisition unit 131, and the acquisition effect of the human face images is improved.

For example, please refer to fig. 3, fig. 3 is a schematic diagram of a human image acquisition with different object distances according to an embodiment of the present application. As shown in fig. 3, the inclination angle provided between the horizontal stroke guide 121 and the horizontal stroke guide 122 is 30 degrees (30 °), and the inclination angle provided between the horizontal stroke guide 122 and the horizontal stroke guide 123 is 30 °. In fig. 3, the horizontal travel guide rail is provided with C, D, E, F four object distances of 50cm, 100cm, 150cm and 200cm, and the image acquisition unit can realize portrait acquisition under different object distances of the horizontal travel guide rail.

The object distance refers to a distance between an object to be captured (e.g., a human face of a target object) and an image capturing unit (e.g., the first image capturing unit 131).

The object distance of the horizontal travel guide rail can be realized by the transmission of a horizontal guide rail stepping motor arranged on the horizontal travel guide rail.

Referring to fig. 4, fig. 4 is a schematic structural diagram of an image capturing unit according to an embodiment of the present disclosure. As shown in fig. 4, the first image capturing unit 131 includes a driving mechanism 1301, a vertical guide rail 1302, and a camera module 1303, where the camera module 1303 is disposed at a first end of the vertical guide rail 1302, and a second end of the vertical guide rail 1302 is vertically connected to the driving mechanism 1301; the driving mechanism 1301 is used for controlling the vertical guide rail 1302 to move up and down.

When the driving mechanism 1301 controls the vertical guide 1302 to move up and down, the height of the camera module 1303 relative to the driving mechanism 1301 changes.

The height of the camera module 1303 in the embodiment of the application can be changed within a large range, so that the camera module can be suitable for acquiring the portrait of the target object with different heights, and can also be suitable for acquiring the portrait of the target object with different acquisition postures (sitting posture, standing posture and the like).

Optionally, the controller 20 is further configured to control the camera module 1303 to move to a second predetermined position in the vertical direction through the driving mechanism 1301, and control the camera module 1303 to capture the first face image when the camera module 1303 moves to the second predetermined position in the vertical direction and the camera module 1303 moves to the first predetermined position in the horizontal direction.

In this embodiment of the application, when the vertical guide 1302 is a non-liftable guide, and the camera module 1303 can slide on the vertical guide 1302, the second predetermined position may be any position on the vertical guide 1302. When the vertical guide rails 1302 are liftable and lowerable guides and the camera module 1303 may not slide on the vertical guide rails 1302, the second predetermined position may be any height of the camera module 1303 in the vertical direction with respect to the first horizontal guide rails 121. When the vertical guide rail 1302 is a liftable guide rail and the camera module 1303 can slide on the vertical guide rail 1302, the second predetermined position may be any position on the vertical guide rail 1302, or any height of the camera module 1303 in the vertical direction relative to the first horizontal guide rail 121.

The camera module 1303 can move horizontally on the first horizontal rail 121 and vertically on the vertical rail 1302. The horizontal direction herein means a direction parallel to the ground, and the vertical direction means a direction perpendicular to the ground. Because one end of the first horizontal guide rail 121 is close to the face of the target object, and the other end of the first horizontal guide rail 121 is far away from the face of the target object, when the camera module 1303 moves on the first horizontal guide rail 121, the distance between the target object and the camera module 1303 in the horizontal direction can be adjusted, the camera module 1303 can shoot different face images under the condition of different object distances, multiple face images of the target object under different object distances can be obtained, the whole face features and local face features of the target object can be obtained from the multiple face images, and richer face information can be obtained. After the first target object performs the portrait acquisition, when the second target object starts to perform the portrait acquisition, if the height difference between the second target object and the first target object is large, the camera module 1303 may move on the vertical guide rail 1302, so that the camera module 1303 may be aligned to the face of the second target object. The embodiment of the application can meet the requirement of human face image acquisition at different heights.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an image capturing unit according to an embodiment of the present disclosure. As shown in fig. 5, the first image capturing unit 131 includes a driving mechanism 1301, a vertical guide 1302, and a camera module 1303;

the driving mechanism 1301 comprises a vertical stepping motor 10, a lifting transmission device 11, a plane bracket 12 and a sliding block 13; the second end of the vertical guide rail 1302 is vertically connected with the lifting transmission device 11;

the vertical stepping motor 10 is configured to control the vertical guide rail 1302 to extend and retract through the lifting transmission device 11, so as to adjust the height of the camera module 1303 relative to the first horizontal guide rail 121;

the plane bracket 12 is used for supporting the vertical stepping motor 10, the lifting transmission device 11, the vertical guide rail 1302 and the camera module 1303;

the sliding block 13 is configured to slide on the first horizontal guide rail 121.

In the embodiment of the present application, the controller 20 can control the operating parameters of the vertical stepping motor 10 to control the height of the camera module 1303 relative to the first horizontal guiding rail 121.

The slide block 13 can slide on the first horizontal rail 121 by being driven by the horizontal rail stepping motor. The controller may control the operating parameters of the horizontal rail advancement motor to control the sliding direction and the sliding length of the slide block 13 on the first horizontal rail 121.

The camera module 1301 comprises a first supporting piece 2, a second supporting piece 8, a first fixing piece 3, a first collecting camera 4, a second collecting camera 6 and a third collecting camera 5;

the first fixing part 3 is connected with a first end of the vertical guide rail 1302, and the first supporting part 2, the second supporting part 8 and the third capturing camera 5 are arranged on one surface of the first fixing part 3, which is far away from the vertical guide rail 1302; the first supporting piece 2 and the second supporting piece 8 are respectively arranged at two sides of the third collecting camera 5; the first supporting member 2 and the second supporting member 8 may be symmetrically disposed with respect to the third capturing camera 5, or asymmetrically disposed, which is not limited in the embodiment of the present application.

The first supporting part 2 is rotatably connected with a first end of the first fixing part 3, and the second supporting part 8 is rotatably connected with a second end of the first fixing part 3;

the first acquisition camera 4 is arranged on the surface of the first supporting piece 2 departing from the first fixing piece 3, and the second acquisition camera 6 is arranged on the surface of the second supporting piece 8 departing from the first fixing piece 3.

In the embodiment of the present application, the controller 20 can control the rotation direction and the rotation angle of the first supporting member 2 around the first end of the first fixing member 3, so as to adjust the included angle between the first supporting member 2 and the first fixing member 3. It should be noted that, in order to acquire the face images at different face angles when the first collecting camera 4 is in the overlooking state, the controller 20 may adjust the first collecting camera 4 to acquire the face images at different face angles when the first collecting camera 4 is in the overlooking state by controlling an included angle between the first supporting member 2 and the first fixing member 3. Similarly, the controller 20 can control the rotation direction and rotation angle of the second supporting member 8 around the second end of the first fixing member 3 to adjust the included angle between the second supporting member 8 and the first fixing member 3. It should be noted that, in order to acquire the face images at different face angles when the second capturing camera 6 is in the upward viewing state, the controller 20 may adjust the face images at different face angles when the second capturing camera 6 is in the upward viewing state by controlling an included angle between the second supporting member 8 and the first fixing member 3.

Wherein, the first collecting camera 4 in the overlook state means that: the target object is viewed from above from the perspective of the first acquisition camera 4. The second collecting camera 6 in the upward viewing state means that: the angle of view of the second acquisition camera 6 looks up towards the target object.

For example, please refer to fig. 6, fig. 6 is a schematic view of a pitch acquisition of portrait acquisition according to an embodiment of the present application. As shown in fig. 6, the first collection camera 4 is located above the third collection camera 5, and the second collection camera 6 is located below the third collection camera 5. The third capturing camera 5 is in a head-up state with respect to the front face of the target object (the horizontal distance between the third capturing camera 5 and the front face of the target object is adjustable, fig. 6 takes 50cm as an example), the third capturing camera 5 may capture a face image in the horizontal direction, and the third capturing camera 5 may capture a face image of the front face of the target object. The first capturing camera 4 is in a top view state with respect to the front face of the target object (the top view angle is adjustable from the perspective of the first capturing camera 4 toward the target object, fig. 6 takes 30 ° as an example), and the first capturing camera 4 may capture a face image of an upper portion of a face of the target object. The second capturing camera 6 is in an upward view state with respect to the front face of the target object (the second capturing camera 6 is upward-looking at the target object from the viewing angle, the upward viewing angle is adjustable, fig. 6 takes 30 ° as an example), and the second capturing camera 6 can capture a face image of the lower portion of the face of the target object.

The camera module 1301 can collect the front face, the upper part of the human face and the lower part of the human face of the target object respectively through three cameras (a first collecting camera 4, a third collecting camera 5 and a second collecting camera 6), so that the collection of multi-angle human face images can be realized.

The camera module 1301 further comprises a first tilt angle sensor 1 and a second tilt angle sensor 7, wherein the first tilt angle sensor 1 is disposed on a surface of the first support 2 facing the first fixing member 3, and the second tilt angle sensor 7 is disposed on a surface of the second support 8 facing the first fixing member 3;

the first tilt sensor 1 is configured to measure an included angle 1B between the first support 2 and the first fixing member 3;

and the second inclination angle sensor 7 is used for measuring an included angle 1A between the second supporting piece 8 and the first fixing piece 3.

In this embodiment, the controller 20 may establish a communication connection with the first tilt sensor 1 and the second tilt sensor 7, and the controller 20 may obtain the included angle 1B measured by the first tilt sensor 1 and the included angle 1A measured by the second tilt sensor 7.

The controller 20 may also control the size of the included angle 1B and the included angle 1A according to the distance (i.e., the object distance) between the third capturing camera 5 of the camera module 1301 and the target object. Specifically, the controller 20 may control the first supporting member 2 to rotate around the first fixing member 3, and the controller 20 may control the second supporting member 8 to rotate around the first fixing member 3.

Generally, in order to ensure that the first and

second capturing cameras

4 and 6 can capture the face images of the target object, the larger the distance between the third capturing camera 5 and the target object is, the smaller the included angle 1B and the included angle 1A are.

Optionally, referring to fig. 7, the camera module further includes a second fixing member 9, where the second fixing member 9 is vertically connected to the first end of the vertical guide rail 1302, and a height sensor 14 is disposed on a surface of the second fixing member 9 facing the planar support 12;

the height sensor 14 is configured to measure a height of the camera module 1303 with respect to the first horizontal rail 121 (see fig. 1).

In the embodiment of the present application, the controller 20 may establish a communication connection with the height sensor 14, and the controller 20 may obtain the height measured by the height sensor 141. The controller 20 may adjust the height of the third capturing camera 5 according to the height measured by the height sensor 141, whether the face region in the image captured by the third capturing camera 5 is located at the center of the image. If the face region in the image acquired by the third acquisition camera 5 is located at the center of the image, the controller 20 does not need to adjust the height of the third acquisition camera 5; if the face region in the image acquired by the third acquisition camera 5 is located at the upper portion of the image, the controller 20 needs to increase the height of the third acquisition camera 5, and if the face region in the image acquired by the third acquisition camera 5 is located at the lower portion of the image, the controller 20 needs to decrease the height of the third acquisition camera 5.

It should be noted that the first image capturing unit 131 is an example of any one of the N image capturing units, and the structures of the other image capturing units are similar to them, which is not described herein again.

Optionally, please refer to fig. 8, and fig. 8 is a schematic view of an orientation of a light supplement module relative to a target object according to an embodiment of the present disclosure. As shown in fig. 8, the image capturing device further includes a light supplement module 40. The controller 20 may control the light intensity of the light supplement module 40.

The light supplement module 40 includes a first light supplement light source 41, a second light supplement light source 42, a third light supplement light source 43, and a fourth light supplement light source 44;

the first supplementary lighting light source 41 is disposed at a front side of the target object 30, the second supplementary lighting light source 42 is disposed at a rear side of the target object 30, the third supplementary lighting light source 43 is disposed at a left side of the target object 30, and the fourth supplementary lighting light source 44 is disposed at a right side of the target object 30.

In the embodiment of the application, 4 light supplementing light sources can be respectively arranged right in front of, behind, on the left of and on the right of the target object 30, so that the light supplementing requirements of portrait acquisition of different scenes are met.

Optionally, the light supplement module 40 further includes a fifth light supplement light source and a sixth light supplement light source;

the fifth supplementary lighting light source is arranged on the upper side of the target object, and the sixth supplementary lighting light source is arranged on the lower side of the target object.

In the embodiment of the application, 6 light supplementing light sources can be respectively arranged right in front of, right behind, left, right above and right below the target object 30, so that the light supplementing requirements of portrait acquisition of different scenes are met.

Optionally, the controller 20 is configured to control brightness intensities of the first light supplement light source 41, the second light supplement light source 42, the third light supplement light source 43, the fourth light supplement light source 44, the fifth light supplement light source, and the sixth light supplement light source.

The controller 20 can respectively control the on and off of the six light supplement light sources and the intensity of the brightness, so as to realize the acquisition of the face image under the light supplement conditions of backlight, frontlight, highlight, dim light, sidelight and the like.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a face recognition system according to an embodiment of the present application. As shown in fig. 9, the face recognition system 100 may include an image acquisition apparatus 10 and a terminal device 50, where the terminal device 50 is connected in communication with the controller 20 of the image acquisition apparatus 10, and the terminal device 50 is configured to send a control instruction to the controller 20 to acquire a face image of a target object, receive the face image acquired by the image acquisition apparatus 10, and perform authentication on the target object according to the face image.

The terminal device (terminal device)50 in the embodiment of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Station (MS), mobile terminal, and the like, which have wireless communication functions, and the embodiment of the present application is not limited thereto.

The terminal device 50 may establish a wireless communication connection or a wired communication connection with the controller 20 of the image capturing apparatus 10, and the embodiment of the present application is not limited thereto.

In the embodiment of the present application, the control instruction that the terminal device 50 may send to the controller 20 includes but is not limited to: an image acquisition instruction (for example, to control the first image acquisition unit 131 in fig. 1 to acquire a face image and to simultaneously control multiple face images acquired by multiple image acquisition units), an image transmission instruction (for receiving the face image acquired by the first image acquisition unit 131 in fig. 1), a height adjustment instruction (for example, to adjust the height of the vertical guide rail 1302 in fig. 7), an object distance adjustment instruction (for example, to adjust the distance between the face of the target object in fig. 6 and the third acquisition camera 5), a fill light source brightness adjustment instruction (for example, to adjust the brightness of any one or more of the first fill light source 41, the second fill light source 42, the third fill light source 43, and the fourth fill light source 44 in fig. 8), and an inclination angle adjustment instruction (for example, to adjust the included angle 1B between the first support 2 and the first support 3 in fig. 5), and a tilt angle adjustment instruction, The angle 1A) between the second support member 8 and the first fixing member 3, etc.

In one embodiment, controller 20 is an integral part of image capture device 10.

In another embodiment, the controller 20 is an integral part of the terminal device 50. At this time, the image capture apparatus 10 is completely controlled by the terminal device 50.

The face recognition system 100 may be used in a professional acquisition room for portrait acquisition. For example, a professional collection room for collecting face images of identification cards.

The face recognition system in the embodiment of the application can be connected with the controller of the image acquisition device through the terminal equipment in a communication mode, the image acquisition device can be controlled to acquire face images at multiple different angles, automatic multi-angle face image acquisition is realized, the acquired face images are multi-angle and multi-pose, and therefore in subsequent face recognition, the recognition accuracy and the recognition efficiency are higher.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application by applying specific examples, and the above description of the embodiments is only provided to help understand the solutions and their core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An image acquisition apparatus, comprising:

the device comprises a controller, at least two horizontal guide rails and at least two image acquisition units, wherein each horizontal guide rail is provided with at least one image acquisition unit in a sliding manner;

2. The apparatus of claim 1, wherein the first image unit is any one of at least one image capturing unit slidably disposed on a first horizontal rail, and the first horizontal rail is any one of the at least two horizontal rails;

the controller controls the first image acquisition unit to acquire the face image under the condition that the first image acquisition unit slides to a first preset position along the horizontal direction of the first horizontal guide rail.

3. The apparatus according to claim 2, wherein the first image capturing unit comprises a driving mechanism, a vertical guide rail and a camera module, the camera module is disposed at a first end of the vertical guide rail, and a second end of the vertical guide rail is vertically connected to the driving mechanism; the driving mechanism is used for controlling the vertical guide rail to move up and down.

4. The apparatus of claim 3, wherein the controller controls the camera module to capture the face image when the camera module is controlled to move to a second predetermined position in a vertical direction and the camera module is controlled to move to the first predetermined position in a horizontal direction.

5. The apparatus of claim 3, wherein the drive mechanism comprises a vertical stepper motor, a lifting gear, a planar support, and a slide block; the second end of the vertical guide rail is vertically connected with the lifting transmission device;

the vertical progress motor is used for controlling the vertical guide rail to stretch and retract through the lifting transmission device so as to adjust the height of the camera module relative to the horizontal guide rail;

the plane bracket is used for supporting the vertical stepping motor, the lifting transmission device, the vertical guide rail and the camera module;

and the sliding block is used for sliding on the first horizontal guide rail.

6. The device of claim 5, wherein the camera module comprises a first support member, a second support member, a first fixing member, a first acquisition camera, a second acquisition camera, and a third acquisition camera;

the first fixing piece is connected with a first end of the vertical guide rail, and the first supporting piece, the second supporting piece and the third acquisition camera are arranged on one surface, deviating from the vertical guide rail, of the first fixing piece; the first supporting piece and the second supporting piece are respectively arranged on two sides of the third acquisition camera;

the first supporting piece is rotatably connected with the first end of the first fixing piece, and the second supporting piece is rotatably connected with the second end of the first fixing piece;

the first supporting piece is deviated from one side of the first fixing piece and provided with the first collecting camera, and the second supporting piece is deviated from one side of the first fixing piece and provided with the second collecting camera.

7. The apparatus according to claim 6, wherein the camera module further comprises a first tilt sensor and a second tilt sensor, the first tilt sensor is disposed on a side of the first supporting member facing the first fixing member, and the second tilt sensor is disposed on a side of the second supporting member facing the first fixing member;

the first inclination angle sensor is used for measuring an included angle between the first supporting piece and the first fixing piece;

and the second inclination angle sensor is used for measuring an included angle between the second supporting piece and the first fixing piece.

8. The device according to claim 6 or 7, wherein the camera module further comprises a second fixing member, the second fixing member is vertically connected with the first end of the vertical guide rail, and a height sensor is arranged on one surface of the second fixing member facing the plane bracket;

the height sensor is used for measuring the height of the camera module relative to the first horizontal guide rail.

9. The device according to any one of claims 1 to 7, wherein the image acquisition device further comprises a light supplement module;

the controller controls the light intensity of the light supplementing module.

10. The apparatus of claim 8, wherein the image capturing device further comprises a fill light module;

the controller controls the light intensity of the light supplementing module.

11. The apparatus of claim 9, wherein the fill-in light module comprises a first fill-in light source, a second fill-in light source, a third fill-in light source, and a fourth fill-in light source;

the first light supplement light source is arranged on the front side of the target object, the second light supplement light source is arranged on the rear side of the target object, the third light supplement light source is arranged on the left side of the target object, and the fourth light supplement light source is arranged on the right side of the target object.

12. The apparatus of claim 10, wherein the fill-in light module comprises a first fill-in light source, a second fill-in light source, a third fill-in light source, and a fourth fill-in light source;

13. The apparatus of claim 9, wherein the fill-in light module further comprises a fifth fill-in light source and a sixth fill-in light source;

14. The apparatus of claim 10, wherein the fill-in light module further comprises a fifth fill-in light source and a sixth fill-in light source;

15. A face recognition system, comprising the image acquisition device according to any one of claims 1 to 14 and a terminal device, wherein the terminal device sends a control instruction to the controller to acquire a face image of a target object, receives the face image acquired by the image acquisition device, and performs authentication on the target object according to the face image.