JP2021117670A - Authentication system, control device, and computer program - Google Patents

Abstract

To provide an authentication system in which both a security level and convenience are enhanced.SOLUTION: A photographing device 11 is disposed inside a compartment 32 of a vehicle 30, and obtains a first image in which a first area A1 located outside the vehicle 30 is captured through a window 31, and a second image in which a second area A2 inside the compartment 32 is captured. A storage device 13 stores an image of a user in the vehicle 30 as authentication information. A control device 12 authenticates a person to be authenticated 20 as the user in the vehicle 30 if a matching level between an image of the person to be authenticated 20 captured in the first image and the image of the user stored in the storage device 13 exceeds a threshold.SELECTED DRAWING: Figure 1

Description

The present invention relates to an authentication system that authenticates a user of a mobile body having a translucent member. The present invention also relates to a control device that can form part of the authentication system and a computer program executed by a processing unit of the control device.

Patent Document 1 discloses an authentication system mounted on a vehicle as an example of a mobile body. In the system, authentication is performed between the control device that controls the operation of the locking device and the key possessed by the user through radio wave communication. If the authentication is successful, the vehicle door will be unlocked.

Japanese Unexamined Patent Publication No. 2016-21334

An object of the present invention is to provide an authentication system with enhanced security level and convenience.

One aspect for achieving the above object is an authentication system that authenticates a user of a mobile body having a translucent member.
A first image that is arranged in the inner space of the moving body and in which the first region in the outer space of the moving body is reflected through the translucent member and a second image in which the second region in the inner space is reflected. The image pickup device to be acquired and
A storage device that stores an image of the mobile user as authentication information,
Control to authenticate the person to be authenticated as the user of the moving body when the degree of matching between the image of the person to be authenticated reflected in the first image and the image of the user stored in the storage device exceeds the threshold value. With the device
It has.

One aspect for achieving the above object is a control device that authenticates a user of a mobile body having a translucent member.
The first image information corresponding to the first image in which the first region in the outer space of the moving body is reflected, which is acquired through the translucent member by the imaging device arranged in the inner space of the moving body, and the imaging device. A reception unit that receives the second image information corresponding to the second image in which the second area in the inner space is reflected, which is acquired by
Based on the first image information, it is determined whether the degree of matching between the image of the authenticated person reflected in the first image and the image of the user stored in the storage device exceeds the threshold value, and the degree of matching is determined. A processing unit that authenticates the person to be authenticated as a user of the moving body when the threshold value is exceeded.
It has.

One aspect for achieving the above object is a computer program executed by a processing unit of a control device that authenticates a user of a mobile body having a translucent member.
By being executed, the control device
The image pickup device arranged in the inner space of the moving body receives the first image information corresponding to the first image in which the first region in the outer space of the moving body is reflected, which is acquired through the translucent member.
The second image information corresponding to the second image in which the second region in the inner space acquired by the image pickup apparatus is reflected is accepted.
Based on the first image information, it is determined whether the degree of matching between the image of the authenticated person reflected in the first image and the image of the user stored in the storage device exceeds the threshold value.
When the degree of matching exceeds the threshold value, the person to be authenticated is authenticated as a user of the mobile body.

According to the above configuration, image authentication that enhances the identification that the certifier is a user of the mobile body can be performed by the imaging device arranged in the inner space of the mobile body. Since the image pickup device used for image authentication is arranged in the inner space, the behavior of the occupant of the moving body in the inner space can be monitored by using the same image pickup device. Therefore, it is possible to provide an authentication system with enhanced security level and convenience.

The mounting position of the authentication system according to one embodiment on a vehicle is illustrated. The functional configuration of the authentication system of FIG. 1 is illustrated. An example of the operation of the authentication system of FIG. 1 is shown. A comparative example with respect to the operation shown in FIG. 3 is shown. Another example of the operation of the authentication system of FIG. 1 is shown.

An example of the embodiment will be described in detail below with reference to the accompanying drawings. In each drawing, the scale is appropriately changed in order to make the illustrated elements recognizable in size.

FIG. 1 illustrates an authentication system 10 according to an embodiment. The authentication system 10 can be used to authenticate the person to be authenticated 20 as a user of the vehicle 30 and allow the person to be authenticated 20 to use the vehicle 30. The vehicle 30 is provided with a transparent window 31. A plurality of seats are installed in the passenger compartment 32 of the vehicle 30. In FIG. 1, a driver's seat 33 and a passenger seat 34 are illustrated. The vehicle 30 is an example of a moving body. The window 31 is an example of a translucent member. The passenger compartment 32 is an example of the inner space of the moving body.

The authentication system 10 includes an image pickup device 11. The image pickup device 11 is arranged in the vehicle interior 32. The imaging device 11 is a device that acquires an image of a predetermined imaging region A. The imaging region A includes the window 31, the first region A1 in the outer space of the vehicle 30, and the second region A2 in the vehicle interior 32. Therefore, the window 31, the first region A1, and the second region A2 are reflected in the image acquired by the image pickup apparatus 11. In other words, the image pickup apparatus 11 simultaneously acquires an image in which the first region A1 is captured through the window 31 and an image in which the second region A2 located in front of the window 31 is captured. Examples of the image pickup device 11 include a camera and an image sensor.

FIG. 2 illustrates the functional configuration of the authentication system 10. The image pickup apparatus 11 is configured to output image information II corresponding to the acquired image. The image information II may be in the form of analog data or digital data.

The authentication system 10 includes a control device 12. As shown in FIG. 1, in this example, the control device 12 is mounted on the vehicle 30. As illustrated in FIG. 2, the control device 12 includes a reception unit 121, a processing unit 122, and an output unit 123.

The reception unit 121 is configured as an interface for receiving image information II. When the image information II is in the form of analog data, the reception unit 121 may include an appropriate conversion circuit including an A / D converter.

The processing unit 122 processes the image information II, which is a form of digital data. Details of the processing performed by the processing unit 122 will be described later. The processing unit 122 permits the output of the control information CI0 from the output unit 123 based on the result of the processing.

The control information CI0 is data for controlling the operation of the controlled device 35 in the vehicle 30. Examples of the controlled device 35 include a door opening / closing device, a door locking device, an air conditioner, a lighting device, an audiovisual equipment, and the like in the vehicle 30. The control information CI0 may be in the form of digital data or analog data. When the control information CI0 is in the form of analog data, the output unit 123 may include an appropriate conversion circuit including a D / A converter.

The authentication system 10 includes a storage device 13. The storage device 13 is a device configured to be able to store an image of a user of the vehicle 30 as authentication information AI in order to perform image authentication. The storage device 13 can be realized in the form of a semiconductor memory or a hard disk device. As shown in FIG. 1, in this example, the storage device 13 is mounted on the vehicle 30.

As an initial setting for image authentication, the processing unit 122 of the control device 12 is configured to be able to execute a process of storing the image information II corresponding to the image of the user received by the reception unit 121 in the storage device 13. The user is required to register the authentication information. The user causes the image pickup apparatus 11 to acquire the image in which the user is captured. The image information II corresponding to the image is stored in the storage device 13 as the authentication information AI. After the registration of the authentication information AI, the image authentication is performed as follows.

As illustrated in FIG. 1, the authenticated person 20 located in the first region A1 outside the vehicle 30 causes the image pickup device 11 to acquire an image in which the person is photographed. In other words, the image pickup apparatus 11 acquires an image in which the person to be authenticated 20 is reflected through the window 31. The image pickup apparatus 11 outputs the image information II corresponding to the image.

The processing unit 122 of the control device 12 is configured to be able to execute a process of reading or referencing the authentication information AI stored in the storage device 13. The processing unit 122 collates the image information II received from the image pickup device 11 by the reception unit 121 with the authentication information AI stored in the storage device 13. The processing unit 122 establishes the authentication when the degree of coincidence between the two exceeds the threshold value. In other words, the processing unit 122 authenticates the person to be authenticated 20 as a user of the vehicle 30 when the degree of agreement between the two exceeds the threshold value.

For example, when the authentication is established, the control information CI0 for unlocking the door of the vehicle 30 is output from the output unit 123 of the control device 12 to the locking device as the controlled device 35. As a result, the person to be authenticated 20 can board the vehicle 30.

According to the above configuration, the image authentication that enhances the identification that the person to be authenticated 20 is the user of the vehicle 30 can be performed by the image pickup device 11 arranged in the vehicle compartment 32 of the vehicle 30. Since the image pickup device 11 used for image authentication is arranged in the vehicle interior 32, the behavior of the occupants in the vehicle interior 32 can be monitored by using the same image pickup device 11. For example, by acquiring an image of a driver seated in the driver's seat 33 with the image pickup device 11, it is possible to detect a doze or inattentiveness while driving by the driver, or to recognize the gesture of the driver. The controlled device 35 associated with the gesture can be operated. Therefore, it is possible to provide an authentication system with enhanced security level and convenience.

As illustrated in FIG. 1, the authentication system 10 may include a first light source 141. The first light source 141 is configured to emit at least the first illumination light L1 that illuminates the first region A1. The wavelength of the first illumination light L1 is appropriately selected as the wavelength at which the image pickup apparatus 11 has sensitivity, but preferably includes a visible light region. The first light source 141 can be realized by a semiconductor light emitting element or a lamp light source.

As illustrated in FIG. 2, the control device 12 may be configured to output control information CI1 that controls turning on and off of the first light source 141. Specifically, the control device 12 causes the first light source 141 to emit the first illumination light L1 so that the first region A1 is brighter than the second region A2. The brightness of the first region A1 and the second region A2 is detected by, for example, a brightness sensor (not shown) mounted on the vehicle 30. The reception unit 121 of the control device 12 receives the brightness information detected by the brightness sensor. When the brightness information indicates that the second region A2 is brighter than the first region A1, the processing unit 122 transmits the control information CI1 for emitting the first illumination light L1 to the first light source 141 from the output unit 123. Output.

FIG. 3 illustrates a state in which the first region A1 is brighter than the second region A2 due to the emission of the first illumination light L1 by the first light source 141. FIG. 4 shows a state in which the second region A2 is brighter than the first region A1 as a comparative example.

In the state illustrated in FIG. 4, a phenomenon occurs in which the reflected image of the vehicle interior 32 is reflected on the inner surface 31a of the window 31. In this case, in the image acquired by the image pickup apparatus 11, the reflected image overlaps the image of the first region A1 acquired through the window 31, and it becomes difficult to identify the authenticated person 20 located in the first region A1. ..

On the other hand, in the state illustrated in FIG. 3, it is possible to suppress the occurrence of the phenomenon that the reflected image of the vehicle interior 32 is reflected on the inner surface 31a of the window 31. Therefore, the identification accuracy of the authenticated person 20 located in the first region A1 can be improved.

As illustrated in FIG. 1, the authentication system 10 may include a second light source 142. The second light source 142 is arranged in the vehicle interior 32 and is configured to emit at least the second illumination light L2 that illuminates the second region A2. The wavelength of the second illumination light L2 can be appropriately selected as the wavelength at which the image pickup apparatus 11 has sensitivity, but preferably includes an infrared light region. The second light source 142 can be realized by a semiconductor light emitting element or a lamp light source.

As illustrated in FIG. 2, the control device 12 may be configured to output control information CI2 that controls turning on and off of the second light source 142. Specifically, the control device 12 causes the second light source 142 to emit the second illumination light L2 while it is detected that the occupant of the vehicle 30 is present in at least the second region A2. FIG. 5 illustrates a state in which the authenticated person 20 is seated in the driver's seat 33 located in the second region A2, and the second light source 142 emits the second illumination light L2.

The detection of the presence of an occupant in the second region A2 can be made by various well-known methods. For example, the seating sensor provided in the driver's seat 33 may detect the driver's seating, or the fact that the engine of the vehicle 30 has been started may be regarded as the driver sitting in the driver's seat 33. .. From the viewpoint of simplifying the configuration of the authentication system 10, it is preferable that the presence of an occupant in the second region A2 is detected by an image recognition technique using the image pickup apparatus 11. In this case, image information II can be used as the detection information. That is, the control device 12 can detect whether or not an occupant is present in the second region A2 based on the image in which the second region A2 is captured.

When it is detected that an occupant is present in the second region A2, the processing unit of the control device 12 outputs the control information CI2 for emitting the second illumination light L2 to the second light source 142 from the output unit 123.

According to such a configuration, since the occupant in the passenger compartment 32 is illuminated by the second illumination light L2, the clarity of the image acquired for monitoring the behavior of the occupant by using the image pickup device 11 is enhanced. Can be done.

As illustrated in FIG. 5, the control device 12 can stop the emission of the first illumination light L1 by the first light source 141 while the second light source 142 emits the second illumination light L2. That is, the processing unit 122 of the control device 12 emits the first illumination light L1 to the first light source 141 while the control information CI2 for emitting the second illumination light L2 to the second light source 142 is output from the output unit 123. Outputs control information CI1 to stop. Alternatively, the processing unit 122 causes the first light source 141 to emit the first illumination light L1 while the control information CI2 for emitting the second illumination light L2 to the second light source 142 is output from the output unit 123. Stops the output of.

It is unlikely that the person to be authenticated 20 is located in the first region A1 during the period in which the second region A2 is illuminated by the second illumination light L2. In other words, it is highly probable that the first illumination light L1 for brightening the first region A1 is unnecessary than the second region A2. According to the above configuration, the power consumption can be reduced by suppressing the unnecessary emission of the first illumination light L1 by the first light source 141.

The processing unit 122 having various functions as described above can be realized by a general-purpose microprocessor that operates in cooperation with a general-purpose memory. Examples of general-purpose microprocessors include CPUs, MPUs, and GPUs. A ROM or RAM can be exemplified as a general-purpose memory. In this case, the ROM may store a computer program that executes the above-described processing. The ROM is an example of a storage medium for storing a computer program. The processor specifies at least a part of the program stored in the ROM, expands it on the RAM, and executes the above-described processing in cooperation with the RAM. The above computer program may be pre-installed in the general-purpose memory, or may be downloaded from an external server via a communication network and installed in the general-purpose memory. In this case, the external server is an example of a storage medium that stores a computer program.

The processing unit 122 may be realized by a dedicated integrated circuit capable of executing the above-mentioned computer program such as a microprocessor, an ASIC, or an FPGA. In this case, the above computer program is pre-installed in the storage element included in the dedicated integrated circuit. The storage element is an example of a storage medium that stores a computer program. The processing unit 122 can also be realized by a combination of a general-purpose microprocessor and a dedicated integrated circuit.

The above embodiments are merely examples for facilitating the understanding of the present invention. The configuration according to the above embodiment may be appropriately changed or improved without departing from the spirit of the present invention.

In the above embodiment, the control device 12 is mounted on the vehicle 30. However, the control device 12 may be an external device capable of acquiring image information II from the image pickup device 11 via a wireless communication network.

In the above embodiment, the storage device 13 is mounted on the vehicle 30. However, the storage device 13 may be an external device capable of communicating with the control device 12 via a wireless communication network.

The above authentication system 10 can be mounted on a moving body other than the vehicle 30. Examples of such mobiles include railroad trains, ships, aircraft and the like. Further, the above-mentioned authentication system 10 can be mounted on a moving body that does not require a driver. The translucent member located in the image pickup region A of the image pickup apparatus 11 is not limited to the window, and may be appropriately determined according to the specifications of the moving body.

10: Authentication system, 11: Imaging device, 12: Control device, 121: Reception unit, 122: Processing unit, 13: Storage device, 141: First light source, 142: Second light source, 20: Certified person, 30: Vehicle, 31: window, 32: cabin, A1: first area, A2: second area, L1: first illumination light, L2: second illumination light

Claims (7)

An authentication system that authenticates a mobile user with a translucent member.
A first image that is arranged in the inner space of the moving body and in which the first region in the outer space of the moving body is reflected through the translucent member and a second image in which the second region in the inner space is reflected. The image pickup device to be acquired and
A storage device that stores an image of the mobile user as authentication information,
Control to authenticate the person to be authenticated as the user of the moving body when the degree of matching between the image of the person to be authenticated reflected in the first image and the image of the user stored in the storage device exceeds the threshold value. With the device
Is equipped with
Authentication system. It is provided with a first light source that emits first illumination light that illuminates at least the first region.
The control device causes the first light source to emit the first illumination light so that the first region is brighter than the second region.
The authentication system according to claim 1. It is provided with a second light source that emits a second illumination light that illuminates at least the second region.
The control device causes the second light source to emit the second illumination light while it is detected that the occupant of the moving body is present in at least the second region.
The authentication system according to claim 2. The control device stops the emission of the first illumination light by the first light source while the second light source emits the second illumination light.
The authentication system according to claim 3. The control device detects whether or not the occupant of the moving body is present in the second region based on the second image.
The authentication system according to claim 3 or 4. A control device that authenticates a user of a mobile body having a translucent member.
The first image information corresponding to the first image in which the first region in the outer space of the moving body is reflected, which is acquired through the translucent member by the imaging device arranged in the inner space of the moving body, and the imaging device. A reception unit that receives the second image information corresponding to the second image in which the second area in the inner space is reflected, which is acquired by
Based on the first image information, it is determined whether the degree of matching between the image of the authenticated person reflected in the first image and the image of the user stored in the storage device exceeds the threshold value, and the degree of matching is determined. A processing unit that authenticates the person to be authenticated as a user of the moving body when the threshold value is exceeded.
Is equipped with
Control device. A computer program executed by a processing unit of a control device that authenticates a user of a mobile body having a translucent member.
By being executed, the control device
The image pickup device arranged in the inner space of the moving body receives the first image information corresponding to the first image in which the first region in the outer space of the moving body is reflected, which is acquired through the translucent member.
The second image information corresponding to the second image in which the second region in the inner space acquired by the image pickup apparatus is reflected is accepted.
Based on the first image information, it is determined whether the degree of matching between the image of the authenticated person reflected in the first image and the image of the user stored in the storage device exceeds the threshold value.
When the degree of agreement exceeds the threshold value, the person to be authenticated is authenticated as a user of the mobile body.
Computer program.

Images