JP6963058B1 - Biometric device, biometric method and biometric program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a biometric authentication device capable of suppressing the influence of the height and physical characteristics of a person to be authenticated on the face recognition process. SOLUTION: A biometric authentication device is a person to be authenticated who is a target person of face recognition processing for an image pickup device capable of adjusting the image pickup direction, which is at least vertical adjustment of the image pickup direction related to image pickup, and the image pickup. An image pickup direction instruction unit that adjusts the image pickup direction so that an image including a face is included in an image image transmitted from the image pickup device by the image pickup, an image pickup instruction unit that instructs the image pickup device to perform the image pickup, and the above. It is provided with an output unit that outputs the result of the face recognition processing for the person to be authenticated performed by the captured image transmitted from the image pickup apparatus. [Selection diagram] Fig. 1

Description

The present invention relates to a device that authenticates the face or iris of a person to be authenticated.

Recently, various face recognition devices and the like are being actively developed. For example, in Patent Document 1, when the illuminance due to the detected ambient light is low, the irradiation light by the illumination means is controlled to be weak, and when the illuminance due to the ambient light is high, the irradiation light by the illumination means is increased. Disclose the face recognition device to be controlled.

Further, Patent Document 2 finely adjusts the shooting angle of the camera head according to the human face position so that the image at the human face position exists in the center of the video screen shot by the camera head. A method for adjusting the head shooting angle is disclosed.

International Publication No. 2007/135735 Special Table 2018-501671

A general face recognition device has the following problems.

The first problem is that the position of the face within the imaging range and the angle of view of the subject (hereinafter referred to as "certified person") who performs face recognition using the face recognition camera is not constant. The reason is that the height or the position of the head at the time of face recognition differs depending on the age, gender, and physical characteristics of the person to be authenticated. For example, there is a report from a health institution that there is a difference of 30 cm or more when comparing the average height of an adult male and the average height of a 10-year-old male child. In addition, the position of the head of a physically handicapped person with a disability in the lower limbs when seated in a wheelchair is significantly different from that of an adult male. As a result, in a general face recognition camera (fixed camera), the head of the person to be authenticated may not fit within the imaging range obtained from a preset angle of view.

Further, when the iris authentication process is performed using the iris authentication camera, there is a problem similar to the above.

An object of the present invention is to provide a biometric authentication device or the like that can suppress the influence of the height and physical characteristics of the person to be authenticated on the face authentication process or the iris authentication process.

The biometric authentication device of the present invention is a subject of face recognition processing or (and) iris authentication processing for an image pickup device capable of adjusting the image pickup direction, which is at least vertical adjustment of the image pickup direction related to image pickup, and the image pickup. An imaging direction indicating unit that adjusts the imaging direction so that an image including the face of the person to be authenticated is included in the captured image transmitted from the imaging device by the imaging, and the imaging device is instructed to perform the imaging. It includes an image pickup instruction unit and an output unit that outputs the result of the face authentication process or the iris authentication process for the person to be authenticated performed by the image captured image transmitted from the image pickup device.

The biometric authentication device and the like of the present invention can suppress the influence of the height and physical characteristics of the person to be authenticated on the face authentication process or the iris authentication process.

It is an image diagram which shows the structural example of the biometric authentication apparatus of this embodiment. It is a conceptual diagram which shows the structural example of the imaging unit. It is a conceptual diagram which shows the structural example of a light emitting part. It is a conceptual diagram (the 1) which shows the specific example of the processing performed by a processing unit. It is a conceptual diagram (No. 2) which shows a specific example of the processing performed by a processing unit. It is a conceptual diagram (No. 3) which shows a specific example of the processing performed by a processing unit. It is a conceptual diagram (the 4) which shows the specific example of the processing performed by a processing unit. It is a conceptual diagram which shows the minimum structure of the biometric authentication apparatus of embodiment.

<First Embodiment>
This embodiment is an embodiment relating to a biometric authentication device that performs face authentication processing of a person to be authenticated. The biometric authentication device of the present embodiment adjusts the imaging direction in the vertical direction so that the head of the person to be authenticated fits in the captured image used for the face recognition process. As a result, the biometric authentication device can properly perform the face authentication process even when the height position of the head of the person to be authenticated is different.

The biometric authentication device further sets the light emitting direction of the illumination at the time of capturing the captured image for performing the face recognition process at a position shifted from the eyes of the person to be authenticated. The biometric authentication device thereby reduces the probability that the person to be authenticated closes his eyes due to the glare of the illumination light, that is, acquires an image captured image that is not suitable for the face recognition process, and further depends on the glare of the illumination light. Reduce the physical burden on the person being authenticated.

The biometric authentication device has a lower illuminance than that in the imaging for the face authentication processing in the imaging for extracting the contour of the face of the person to be authenticated, which is performed before the imaging of the captured image for performing the face authentication processing. Lighting is used. The biometric authentication device thereby reduces the probability that the person to be authenticated has his eyes closed due to glare, that is, the probability of acquiring an image that is not suitable for face recognition processing, and the physical burden on the person to be authenticated due to glare. Further reduce.
[Configuration and operation]
FIG. 1 is an image diagram showing a configuration of a biometric authentication device 100, which is an example of the biometric authentication device of the present embodiment. FIG. 1A is a front perspective view of the biometric authentication device 100. Further, FIG. 1B is a cross-sectional view of the biometric authentication device 100. It should be noted that FIG. 1 (b) merely represents the cross section of each configuration as an image, and does not accurately reflect the arrangement, dimensions, etc. in FIG. 1 (a).

The biometric authentication device 100 is installed, for example, on the wall surface of the wall 8 so that the imaging unit 3 is located at the eye level of a person of standard height.

The biometric authentication device 100 includes light diffusing members 1 and 7, light emitting units 11 and 71, an imaging unit 3, a person detection unit 2, a voice output unit 4, a housing 5, an authentication medium reading unit 6, and the like. A processing unit 12 and a storage unit 13 are provided.

Here, a configuration example of the imaging unit 3 will be described with reference to FIG. The image pickup unit 3 includes an image pickup execution unit 31, an image pickup direction adjustment unit 32, and an image pickup processing unit 33.

The imaging execution unit 31 is, for example, a portion corresponding to a portion that executes imaging of a general digital camera or a camera of a smartphone. The image pickup execution unit 31 includes an image pickup element (not shown), an image pickup lens, and an illuminance measurement unit. The imaging lens can change the imaging magnification according to the instruction from the imaging processing unit 33.

The imaging execution unit 31 executes imaging in the direction of the arrow 99a through the protective glass 34 in accordance with the instruction from the imaging processing unit 33. The image pickup execution unit 31 transmits the image pickup signal from the image pickup device to the image pickup processing unit 33.

The imaging execution unit 31 also measures the illuminance in the imaging range by the above-mentioned illuminance measuring unit, and sequentially transmits a signal representing the illuminance to the imaging processing unit.

The image pickup direction adjusting unit 32 includes, for example, a turning drive unit that turns in the vertical direction. In that case, the imaging direction adjusting unit 32 adjusts the imaging direction of the imaging execution unit up and down (adjustment to rotate in the up and down direction) by the rotation driving unit in accordance with the instruction from the imaging processing unit 33. The swivel drive unit that performs such vertical swivel adjustment can be appropriately selected from well-known configurations, and detailed description thereof will be omitted here.

The adjustment of the imaging direction by the imaging direction adjusting unit 32 is performed by imaging a camera or the like that generally captures the head of a short person or a person sitting in a wheelchair, which was explained in the section of the problem to be solved by the invention. This is to solve the problem that is difficult in the department.

The image pickup processing unit 33 causes the image pickup execution unit 31 to perform an image pickup according to the image pickup instruction information transmitted from the processing unit 12 of FIG. The image pickup processing unit 33 also causes the image pickup direction adjusting unit 32 to adjust the image pickup direction of the image pickup execution unit 31 according to the image pickup direction instruction information transmitted from the processing unit 12. The image pickup processing unit 33 also causes the image pickup execution unit 31 to adjust the image pickup magnification according to the image pickup magnification instruction information transmitted from the processing unit 12. The image pickup processing unit 33 also generates illuminance information representing illuminance from the above-mentioned illuminance signal transmitted from the image pickup execution unit 31, and transmits the illuminance information to the processing unit 12.

Here, the explanation of FIG. 2 is finished, and the explanation returns to the explanation of FIG.

The light emitting units 11 and 71 are for irradiating the person to be authenticated with illumination light via the light diffusing members 1 and 7 to secure the illuminance required for imaging by the imaging unit 3.

Experience has shown that when face recognition processing is performed using captured images, it is generally necessary to have an illuminance of 200 lux or more for the person to be authenticated in order to obtain a clear captured image that prevents authentication errors. There is. However, the illuminance may be too low depending on the installation location and installation environment of the imaging unit. The reason is that, for example, the illuminance is not uniform depending on the authentication environment. For example, in the case of a face recognition facility provided to restrict entry to the office, the installation position is often on the wall surface on the corridor side. In this environment, the lighting in the corridor may be suppressed to save electricity, or the fluorescent light may be shielded by obstacles such as pillars. In such a case, sufficient illuminance for performing the face recognition process may not be obtained, and an authentication error may occur. The lighting by the light emitting units 11 and 71 performed according to the instruction of the processing unit 12 is for solving the problem.

Here, the description of FIG. 1 is interrupted, and a configuration example of the light emitting unit 11 will be described with reference to FIG. The light emitting unit 11 includes a light emitting element unit 111 and a light emitting direction adjusting unit 112. The light emitting element unit 111 includes, for example, a light emitting diode and a control unit that supplies a current for causing the light emitting diode to emit light, which is not shown. The light emitting element unit 111 stops light emission and light emission in accordance with the instruction from the processing unit 12, and further changes the light emission intensity in the case of light emission. The light emitting direction adjusting unit 112 is configured to include, for example, a well-known rotating stage. In that case, the rotating stage adjusts the main illumination direction of the illumination light emitted to the right from the light diffusing member 1 by the light emitted from the installed light emitting element unit 111 in accordance with the instruction from the processing unit 12. Since such a rotating stage can be appropriately selected from well-known configurations, detailed description thereof will be omitted. Further, the term "main emission direction" is described here because when the light emitting element is a light emitting diode, the emitted light is diffused light and there is a distribution of emission intensity. The "main emission direction" is the center of the emission direction of the diffused light. In the following description, the "main emission direction" may be simply described as the "emission direction".

Even if the light emitting direction adjusting unit 112 is provided with a mirror (not shown), the light emitting direction is swirled up and down by changing the direction of the light emitted from the light emitting element to the mirror. I do not care.

The light emitted from the light emitting unit 11 is emitted to the right as illumination light via the light diffusing member 1. The light emitting direction adjusting unit 112 causes the light emitting element unit 111 to adjust the light emitting direction, thereby adjusting the main illumination direction of the illumination light by turning up and down. The light diffusing member 1 is a member that further diffuses the light incident from the light emitting unit 11.

The same applies to the light emitting unit 71 as described above.

The light diffusing member 1 irradiates the diffused light obtained by further diffusing the light incident from the light emitting unit 11 to the right side of FIG. 1B as illumination light which is the further diffused light. The illumination direction of the illumination light is adjusted by the emission direction of the light from the light emitting unit 11.

The reason why the light emitting units 11 and 71 are provided with the light emitting direction adjusting unit 112 and the light emitting direction adjusting unit 112 corresponding to the light emitting direction adjusting unit 112 in FIG. 3 is as follows.

When a lighting device is installed near the face recognition camera to ensure sufficient illuminance, the person to be authenticated closes his eyes due to the glare of the illumination light, and the face image of the person to be authenticated who has closed his eyes is registered in advance. An authentication error may occur if it is determined that the image is different from the image. The reason why the person to be authenticated feels glare due to the illumination light is that when the lighting device is installed so as to illuminate the person's face from the vicinity of the face authentication camera, one is to the eyeball of the person to be authenticated. This is because 200 lux of illumination light for ensuring the illuminance required for imaging is directly incident. That is, when a light source of 200 lux is installed in front of or near the subject to be authenticated, the eye is kept closed for a while due to blink reflection or light adaptation of the optic nerve depending on the incident angle of the light. Therefore, the state in which the face recognition process cannot be performed normally continues, and an authentication error may occur.

The adjustment of the light emitting direction performed by the light emitting direction adjusting unit according to the instruction of the processing unit 12 solves the above problem by reducing the illuminance in the vicinity of the eyes of the person to be authenticated.

Here, the description is returned to FIG.

The human detection unit 2 is, for example, a motion sensor. In that case, the person detection unit 2 is configured to include, for example, a laser range finder. Then, the person detection unit 2 scans the range of the direction of the arrow 99a in FIG. 1B in which the direction of the distance detection is set in advance, and when the distance is equal to or less than the threshold value in any of the scanning ranges, the person is detected. The person detection information, which is the information indicating the detection, is transmitted to the processing unit 12.

The audio output unit 4 is, for example, a speaker. The audio output unit 4 outputs audio according to the instructions of the processing unit 12.

The authentication medium reading unit 6 reads and processes media authentication information, which is information representing the authentication medium, from, for example, a short-range wireless communication medium for authentication (authentication medium) held over the predetermined position. It is transmitted to the part 12. The authentication medium is, for example, an employee ID card or an admission card.

The storage unit 13 is configured to include, for example, a hard disk device and a semiconductor memory. The storage unit 13 holds in advance programs and information necessary for the processing unit 12 to perform processing. The storage unit 13 also stores the information instructed by the processing unit 12. The storage unit 13 also transmits the stored information instructed by the processing unit 12 to the processing unit 12.

The processing unit 12 is configured to include, for example, a central processing unit of a computer.

The processing unit 12 causes the imaging unit 3 to rotate and adjust the imaging direction in the vertical direction so that the head of the person to be authenticated fits in the captured image used for the face recognition process. As a result, the processing unit 12 can properly perform the face recognition process even when the height position of the head of the person to be authenticated is different.

The processing unit 12 also causes the light emitting units 11 and 71 to set the illumination direction of the illumination at the time of capturing the captured image for performing the face recognition process at a location shifted from the eyes of the person to be authenticated. As a result, the processing unit 12 reduces the probability that the person to be authenticated closes his eyes due to glare and acquires an image captured image that is not suitable for face recognition processing, and reduces the burden on the person to be authenticated due to glare.

Further, in the imaging for acquiring the contour of the face of the person to be authenticated, which is performed by the imaging unit 3 before the imaging of the captured image for performing the face authentication processing, the processing unit 12 is in the imaging for the face authentication processing. The light emitting units 11 and 71 are made to illuminate with a lower illuminance. As a result, the processing unit 12 further reduces the probability that the person to be authenticated closes his eyes due to glare, that is, obtains an image captured image that is not suitable for face recognition processing, and the physical burden on the person to be authenticated due to glare. do.

Hereinafter, specific examples of the processing performed by the processing unit 12 to perform the above operation will be described with reference to FIGS. 4 to 7. 4 to 7 are conceptual diagrams showing an example of a processing flow of processing performed by the processing unit 12.

The processing unit 12 starts the processing of FIGS. 4 to 7 by inputting start information from the outside, for example. The storage unit 13 starts the operation in conjunction with the start of the operation of the processing unit 12.

Then, the processing unit 12 first initializes each processing condition as the processing of S101. The processing condition initialization includes, for example, a process in which the processing unit 12 sets the processing stage to the initial stage. The initialization also includes, for example, a process of setting the illuminance information to be transmitted from the imaging unit 3 to the zero level.

The initialization also includes, for example, a process of setting the light amount instruction information, which is information indicating the amount of light to be applied to the light emitting units 11 and 71, to zero. The initialization also includes, for example, a process of setting the light emission direction instruction information, which is information for instructing the light emission direction, to be transmitted to the light emitting units 11 and 71 to an initial value. The light emitting direction at the initial value is, for example, the direction of the uppermost arrow included in the arrow 99a in FIG. 1 (b).

The initialization also includes, for example, a process of setting the imaging magnification instruction information transmitted to the imaging unit 3 to an initial value. The initialization also includes, for example, a process of setting the imaging instruction information transmitted to the imaging unit 3 to not be imaged. The process condition initialization also includes, for example, a process of setting the input information from the person detection unit 2 as information indicating that no person is detected. The processing condition initialization also includes, for example, a process of setting the input information from the authentication medium reading unit 6 as information indicating that the medium authentication information has not been read.

Next to the processing of S101, the processing unit 12 starts the light emitting units 11 and 71, the imaging unit 3, the person detection unit 2, and the authentication medium reading unit 6 as S102 on the premise of the initialization performed in S101. To instruct. In response to the instruction, the light emitting units 11 and 71, the imaging unit 3, the person detection unit 2, and the authentication medium reading unit 6 are activated.

That is, the light emitting units 11 and 71 adjust the amount of light emitted by the light amount instruction information transmitted from the processing unit 12. Since the amount of light is set to the initial value of zero by the processing of S101, the light emitting units 11 and 71 do not emit light. The light emitting units 11 and 71 adjust the light emitting direction according to the light emitting direction instruction information transmitted from the processing unit 12. The light emitting direction is set to the initial state by the process of S101.

Further, the person detection unit 2 determines the presence or absence of a person within the set range, and if it determines that there is a person, outputs that fact to the processing unit 12.

Further, when the authentication medium reading unit 6 reads the medium authentication information from the short-range wireless communication medium for authentication, the authentication medium reading unit 6 transmits the medium authentication information to the processing unit 12.

In addition, the imaging unit 3 transmits illuminance information representing the illuminance in the imaging range to the processing unit 12. Further, the imaging unit 3 adjusts the imaging direction according to the imaging direction instruction information from the processing unit 12. The imaging unit 3 also adjusts the imaging magnification according to the imaging magnification instruction information from the processing unit 12. The imaging unit 3 also executes imaging based on the imaging instruction information from the processing unit 12 and transmits the captured image data to the processing unit 12.

Next, the processing unit 12 determines whether or not a person has been detected as the processing of S103. The processing unit 12 makes the determination, for example, by determining whether or not the above-mentioned person detection information is transmitted from the person detection unit 2.

Next, as the process of S104, the processing unit 12 determines whether the illuminance of the illuminance information transmitted from the imaging unit 3 is less than the first set value. The first set value is a lower value than the second set value (see S141 in FIG. 6) described later when capturing a face image for face recognition processing, and is, for example, 50 lux. When the determination result by the processing of S104 is yes, the processing unit 12 performs the processing of S105. On the other hand, when the determination result by the processing of S104 is no, the processing unit 12 skips the processing of S105 and performs the processing of S106.

When the processing unit 12 performs the processing of S105, the processing unit 12 causes the light emitting units 11 and 71 to emit light corresponding to the amount of light of the first set value as the same processing.

The reason why the light emitting units 11 and 71 are made to emit light having a relatively low first set value by the processing of S105 is as follows. That is, as explained below, the reason is that the image captured by irradiating the authenticated person with the illumination light by the light emission is not for executing the face recognition process, but the outline of the authenticated person. This is because it is for extraction, so it does not need to be illuminated with a high amount of light. The relatively low illumination light can prevent the person being authenticated from closing their eyes or feeling a physical burden due to excessive glare.

Then, the processing unit 12 determines whether the media authentication information has been read by the authentication medium reading unit 6 as the processing of S106. The processing unit 12 makes the determination by determining whether or not the medium authentication information is transmitted from the authentication medium reading unit 6. The processing unit 12 receives an operation of holding the above-mentioned authentication medium over the authentication medium reading unit 6 over the voice output unit 4 between the time when yes is determined in the processing of S103 and the time when the processing of S106 is performed. A voice prompting the certifier may be output. The voice is, for example, "Please hold the authentication medium."

The processing unit 12 performs the processing of S107 when the determination result by the processing of S106 is yes. On the other hand, when the determination result by the processing of S106 is no, the processing unit 12 performs the processing of S103 again.

When the processing of S107 is performed, the processing unit 12 determines, as the same processing, whether or not the media authentication information determined to have been read by the processing of S106 is registered. The processing unit 12 makes the determination, for example, by determining whether or not the medium authentication information group stored in the storage unit 13 includes the read information.

When the determination result by the processing of S107 is yes, the processing unit 12 performs the processing of S108. On the other hand, when the determination result by the processing of S107 is no, the processing unit 12 performs the processing of S103 again.

When the processing unit 12 performs the processing of S108, the processing unit 12 transmits the imaging instruction information to the imaging unit 3 as the same processing. Upon receiving the transmission of the imaging instruction information, the imaging unit 3 executes imaging. The imaging direction and imaging magnification at this stage are set to initial values by the processing of S101. Therefore, the image from the head to the shoulder of the person to be authenticated may not be within the imaging range or may be out of alignment. The imaging unit 3 transmits image information (captured image information) obtained by imaging to the processing unit 12.

Next, the processing unit 12 performs processing for extracting the contour line of the person to be authenticated from the captured image information transmitted from the imaging unit 3. This process is a general process performed in image processing. Therefore, the details are omitted.

Then, the processing unit 12 determines whether or not the contour line including the portion from the shoulder to the head of the person to be authenticated can be extracted by the processing of S109 as the processing of S110. When the determination result by the processing of S110 is yes, the processing unit 12 performs the processing of S121 of FIG. On the other hand, when the determination result by the processing of S110 is no, the processing unit 12 performs the processing of S111.

When performing the processing of S111, the processing unit 12 gives an instruction to change the imaging direction to the depression angle direction by a preset angle (set angle) in the imaging direction instruction information transmitted to the imaging unit 3 as the same process. I do. The set angle is, for example, 5 degrees. Then, the processing unit 12 performs the processing of S108 again.

When performing the process of S121 of FIG. 5, the processing unit 12 performs a process of extracting the shoulder height line, which is a line representing the shoulder height, from the contour line extracted by the latest contour line extraction process. .. The process can be performed by a well-known process by image recognition. Therefore, the detailed description of the process is omitted. The latest contour line extraction process was performed most recently from either S109 described above or S130 described later.

Next, as the process of S122, the processing unit 12 performs a process of identifying the crown from the contour line extracted by the process of S109. The processing can be performed by a well-known method in image processing. Therefore, the detailed explanation is omitted.

Then, as the processing of S123, the processing unit 12 sets the midpoint of the line perpendicular to the shoulder height line from the point representing the crown to the face center point, which is the point representing the center of the face. The points in the image information are represented by coordinates, for example.

Then, as the process of S124, the processing unit 12 transmits the imaging direction instruction information for instructing the vertical rotation adjustment of the imaging direction to the imaging unit 3 so that the center point of the face is appropriate for the vertical range of the imaging range. The appropriate imaging direction is, for example, an imaging direction in which the center point of the face is at a position 2/5 from the upper limit in the imaging range.

Then, as the processing of S125, the processing unit 12 derives an imaging magnification in which the entire head is within the imaging range, and transmits the imaging magnification instruction information instructing the setting of the imaging magnification to the imaging unit 3.

Then, the processing unit 12 derives the horizontal distance between the center point of the imaging range and the face center point as the processing of S126. Then, the processing unit 12 determines, as the processing of S127, whether or not the horizontal distance derived by the processing of S126 is equal to or less than a preset threshold value. The threshold is, for example, 10 centimeters. When the determination result by the process of S127 is yes, the processing unit 12 performs the process of S141 of FIG. On the other hand, when the determination result by the processing of S127 is no, the processing unit 12 performs the processing of S128.

When performing the processing of S128, the processing unit 12 instructs the person to be authenticated to output a voice urging the person to be authenticated to correct its horizontal position. The content of the voice is, for example, "Stand in front of the camera".

Then, the processing unit 12 transmits the image pickup instruction information to the image pickup unit 3 as the process of S129, and causes the image pickup unit 12 to execute the image pickup. Then, the processing unit 12 derives the contour line of the person to be authenticated from the captured image information transmitted from the imaging unit 3 as the processing of S130. Then, the processing unit 12 processes S121 with respect to the contour line.

When the processing of S141 of FIG. 6 is performed, the processing unit 12 determines whether or not the illuminance represented by the illuminance information transmitted from the imaging unit 3 is less than the second set value. The second set value is higher than the above-mentioned first set value. The second set value is, for example, 200 lux. The reason why the second set value is set higher than the above-mentioned first set value is that the captured image information acquired by the illumination of the illuminance of the second set value simply draws the contour line of the authenticated person as explained below. This is because it is not for obtaining, but for performing face recognition processing of the person to be authenticated. For that purpose, it is necessary to acquire a clearer image than the image captured at the illuminance of the first set value, and for that purpose, it is necessary to image at a higher illuminance.

When the determination result by the processing of S141 is yes, the processing unit 12 performs the processing of S142. On the other hand, when the determination result by the processing of S141 is no, the processing unit 12 skips the processing of S142 to S144 and performs the processing of S145.

When processing S142, the processing unit 12 estimates the height positions of the forehead and lips from the most recently derived face center point as the same processing. At that time, the processing unit 12 uses a value determined by, for example, an empirical value, for the difference between the center point of the face and the height position of the forehead or the lips.

Then, as the process of S143, the processing unit 12 causes the light emitting unit 11, which is the upper light emitting unit, to set the illumination direction of the illumination light from the light diffusing member 1 to the position of the forehead of the person to be authenticated. introduce. As a process of S143, the processing unit 12 causes the light emitting unit 71, which is a lower light emitting unit, to set the light emitting direction of the illumination light emitted from the light diffusing member 7 to the position of the lips of the person to be authenticated. Communicate information.

Then, as the process of S144, the processing unit 12 transmits the light amount instruction information for causing the light emitting units 11 and 71 to emit light of the light amount corresponding to the illuminance of the second set value. In response to the transmission, the light emitting unit 11 directs the light emitting unit 11 toward the forehead of the person to be authenticated, and the light emitting unit 71 toward the lips of the person to be authenticated. Irradiate as.

In this way, the lighting direction is the forehead and the lips, because the lighting direction is shifted from the eyes of the person to be authenticated, so that the person to be authenticated closes his eyes due to glare or feels a physical burden. This is to prevent it. Even in such a case, since the illumination light emitted to the person to be authenticated via the light diffusing members 1 and 7 is diffused light, it reaches the vicinity of the eyes of the person to be authenticated and is necessary for executing the face recognition process. An image having a high resolution is captured.

Then, the processing unit 12 transmits the imaging instruction information instructing the imaging to the imaging unit 3 as the processing of S145. Upon receiving the transmission of the imaging instruction information, the imaging unit 3 performs imaging at an illuminance equal to or higher than the second set value, and transmits the captured image image information to the processing unit 12.

Then, as the processing of S146, the processing unit 12 performs face recognition processing on the person to be authenticated by using the latest captured image information transmitted from the imaging unit 3. The processing unit 12 performs the face authentication process, for example, by comparing the face information read from the storage unit 13 with the face information in the captured image by using the medium authentication information read by the authentication medium reading unit 6. The processing unit 12 uses, for example, a well-known face recognition technique for the face recognition process. The description of the well-known face recognition technique is omitted here.

Then, the processing unit 12 determines whether the authentication was successful by the processing of S147 as the processing of S151 of FIG. 7. When the determination result by the processing of S151 is yes, the processing unit 12 performs the processing of S155. On the other hand, when the determination result by the processing of S151 is no, the processing unit 12 performs the processing of S152.

The processes of S152 to S154 are processes in which imaging and face authentication are performed again just in case when a determination result indicating that the authentication has failed is obtained by the process of S151.

That is, when the processing unit 12 performs the processing of S152, the processing unit 12 transmits the imaging instruction information to the imaging unit 3 to perform the imaging as the same processing. Then, the processing unit 12 performs face recognition processing on the person to be authenticated based on the captured image information transmitted from the imaging unit 3. Then, as the process of S154, the processing unit 12 determines whether or not the authentication of the person to be authenticated is successful by the face recognition process performed by the process of S153.

When the determination result by the processing of S154 is yes, the processing unit 12 performs the processing of S155. On the other hand, when the determination result by the processing of S154 is no, the processing unit 12 causes the voice output unit 4 to output a voice notifying that the authentication has failed as the processing of S158. The voice is, for example, "authentication failed".

Next, as the process of S155, the processing unit 12 transmits the light amount instruction information instructing the setting of the light amount zero to the light emitting units 11 and 71, and stops the light emission. Then, the processing unit 12 causes the voice output unit 4 to output voice information indicating that the authentication is successful as the processing of S156. The voice is, for example, "authenticated".

Then, as the process of S157, the processing unit 12 transmits the authentication success information indicating that the authentication by the face recognition process is successful to the preset external transmission destination of the biometric authentication device 100. The biometric authentication device 100 of FIG. 1 is communicated with the transmission destination by a signal line or wireless for transmitting authentication success information. In FIG. 1, the configuration for performing communication by the signal line or the radio is omitted.

The transmission destination is, for example, an electronic lock installed on the door of a room where the number of people who can enter is restricted. In that case, the electronic lock is unlocked upon receiving the transmission of the authentication success information. Then, the electronic lock is locked, for example, by detecting that the door is closed or determining whether a predetermined time has elapsed.

The transmission destination is, for example, a flapper gate provided at the entrance of an area where access is restricted. In that case, the entrance gate is made available for entry by opening the flapper in response to the transmission of the authentication success information. Then, the flapper gate closes the flapper and makes it impossible to enter by, for example, detecting that a person corresponding to the person has passed or determining whether a predetermined time has elapsed.

Then, as the processing of S159, the processing unit 12 causes the imaging unit 3 to set the imaging direction and the imaging magnification to the initial values based on the imaging direction instruction information and the imaging magnification instruction information.

Then, as the process of S160, the processing unit 12 causes the light emitting units 11 and 71 to set the light emitting direction and the light amount to the initial values by the light emitting direction instruction information and the light amount instruction information.

Then, the processing unit 12 determines whether to end the processing of FIGS. 4 to 5. The processing unit 12 makes the determination, for example, by determining whether or not end information is input from the outside. When the determination result by the process of S161 is yes, the processing unit 12 ends the process of FIGS. 4 to 5. On the other hand, when the determination result by the process of S161 is no, the processing unit 12 performs the process of S103 of FIG. 4 again.

In the above description, an example in which the authentication medium reading unit 6 reads the medium authentication information of the authenticated person prior to the face recognition process of the authenticated person has been described. However, the authentication medium reading unit 6 may be omitted. In that case, the processing unit 12 compares the face authentication processing information obtained from the captured image information with each of the face authentication processing information groups stored in the storage unit 13, and whether or not there is a match. Is determined. However, in order to perform face recognition processing with high accuracy, a large amount of processing is required, and processing time for that may be required. When the medium authentication information is read by the authentication medium reading unit 6, the face authentication information can be specified from the face authentication processing information group stored in the storage unit 13 based on the medium authentication information. Then, the face recognition information and the face recognition processing information obtained from the captured image information can be compared. In that case, the amount of processing required for the face recognition process can be reduced. Therefore, in that case, the processing time required for the face recognition processing can be shortened. Further, in the above case, it is determined whether or not the person to be authenticated is registered twice by the media authentication information and the face authentication process. Therefore, in the above case, the accuracy of determination as to whether or not the person to be authenticated is registered can be improved.

Furthermore, instead of authentication by media authentication information, or in addition to authentication by media authentication information, other biometric authentication processes such as fingerprint authentication, finger vein authentication, and iris authentication process are used for the person to be authenticated. May be good. In that case, it is determined whether or not the person to be authenticated is registered multiple times by biometric authentication and face authentication processing. Therefore, in that case, the accuracy of determination as to whether or not the person to be authenticated is registered can be improved. Further, in that case, since biometric authentication is performed, it is possible to determine whether or not the person to be authenticated is alive.

Further, in the processing example of FIG. 5, the determination processing of whether or not the face authentication is successful is limited to a maximum of two times in S151 and S154. However, the upper limit of the number of times of the determination process of whether or not the face authentication is successful may be three or more times. Further, the upper limit value may be changed by input information or the like.

Further, in the biometric authentication device 100 of FIG. 1, the information presented to the person to be authenticated is output by the voice from the voice output unit 4. However, the biometric authentication device 100 may be provided with an image output device such as a display, and information presented to the person to be authenticated may be output as image information on the screen of the image output device. In that case, the biometric authentication device 100 may output the information presented to the person to be authenticated by both the voice from the voice output unit 4 and the image information of the image output device.

Alternatively, the biometric authentication device 100 replaces the presentation of the information to the person to be authenticated, or in addition to the presentation of the information to the person to be authenticated, the person to be authenticated by presenting characters or images by laser light or the like. Information may be presented to.
[effect]
The biometric authentication device of the present embodiment adjusts the imaging direction up and down so that the head of the person to be authenticated fits in the captured image used for the face recognition process. Therefore, the face recognition process can be appropriately performed even when the height and the height position of the head of the subject such as the subject who uses the wheelchair are different.

When the biometric authentication device captures an image for face recognition processing, the biometric authentication device may irradiate the person to be authenticated with illumination light for obtaining a high-resolution image required for face recognition processing. In that case, the biometric authentication device reduces the dependence of face recognition accuracy on the illuminance in the installation environment, or suppresses the capital investment required for the installation of other lighting equipment to obtain the required illuminance. In that case, the biometric authentication device further reduces the mental stress of the person to be authenticated due to repeated face recognition processing without success in face recognition processing.

The biometric authentication device may set the illumination direction at the time of capturing the captured image for performing the face recognition process to a position shifted from the eyes of the person to be authenticated. In that case, the biometric authentication device suppresses the authentication failure caused by the subject to acquire an image captured image unsuitable for the face recognition process in which the eyes are closed due to glare and the burden on the subject due to glare.

In the imaging for acquiring the contour of the face of the person to be authenticated, which is performed before the imaging of the captured image for performing the face authentication processing, the biometric authentication device has a lower illuminance than in the imaging for the face authentication processing. Lighting may be used. In that case, the biometric authentication device further increases the physical burden on the person to be authenticated due to the failure of authentication and the glare caused by the person to be authenticated acquiring an image captured image that is not suitable for face recognition processing in which the eyes are closed due to glare. Suppress.
<Second embodiment>
The present embodiment is an embodiment relating to a biometric authentication device that performs iris authentication processing of a subject to be authenticated instead of or in combination with face authentication processing.

In the biometric authentication device of the present embodiment, an infrared camera is used for the image pickup unit 3 of the biometric authentication device 100 shown in FIG. Then, at least one of the light diffusing members 1 or 7 is replaced with an infrared light transmitting member. In the biometric authentication device of the present embodiment, at least one of the light emitting unit 11 or 71 is an infrared irradiation unit that irradiates infrared rays.

Then, in the biometric authentication device of the present embodiment, the processing unit 12 of FIG. 1 causes the infrared irradiation unit to irradiate the eyeball portion with infrared light instead of the processing of S142 and S143 of FIG. Instead, let an infrared camera take a picture of the eyeball. Then, instead of the processing of S146, the processing unit 12 acquires and stores the iris pattern from the captured image, and collates it with the data of the glow pattern held in advance.

Except for the above, the operation performed by the biometric authentication device of the present embodiment is the same as the operation performed by the biometric authentication device 100 of the first embodiment. The biometric authentication device of the present embodiment has the following effects when performing configuration authentication according to the above.

That is, the biometric authentication device of the present embodiment adjusts the imaging direction up and down so that the head of the person to be authenticated fits in the captured image used for the iris recognition process. Therefore, the iris recognition process can be properly performed even when the height and the height position of the head of the subject such as the subject who uses the wheelchair are different.

When capturing an image for iris recognition processing, the biometric authentication device irradiates the eyeball portion of the person to be authenticated with infrared illumination light for obtaining a high-resolution image required for iris recognition processing. In that case, the biometric authentication device reduces the dependence of the accuracy of the iris recognition process on the illuminance in the installation environment, or suppresses the capital investment required for the installation of other lighting equipment to obtain the required illuminance. .. In that case, the biometric authentication device further reduces the mental stress of the person to be authenticated due to repeated iris recognition processing without successful iris recognition.

In the biometric authentication device of the present embodiment, the configuration of the first embodiment for performing the face authentication process and the configuration for performing the iris authentication process may be used together. In that case, the above-mentioned iris recognition process may be executed after S146 in which the face recognition process is performed in FIG. 6, or the face recognition process and the iris recognition process may be executed in parallel.

FIG. 8 is a conceptual diagram showing the minimum configuration of the biometric authentication device 12x, which is the biometric authentication device of the embodiment. The biometric authentication device 12x includes an imaging direction indicating unit 12ax, an imaging instruction unit 12bx, and an output unit 12cx.

The image pickup direction indicating unit 12ax causes the image pickup device to include an image including the face of the person to be authenticated who is the target person of the face authentication process or the iris recognition process in the image pickup image transmitted from the image pickup device by the image pickup. To adjust the imaging direction. Here, the image pickup apparatus can perform the image pickup direction adjustment and the image pickup, which are adjustments at least in the vertical direction of the image pickup direction related to the image pickup.

The imaging instruction unit 12bx instructs the imaging apparatus to perform the imaging.

The output unit 12cx outputs the result of the face authentication processing or the iris authentication processing for the person to be authenticated performed by the captured image transmitted from the imaging device.

The biometric authentication device 12x adjusts the imaging direction so that the image including the face of the person to be authenticated is included in the captured image transmitted from the imaging device by the imaging. Therefore, the biometric authentication device 12x can suppress the influence of the height and physical characteristics of the person to be authenticated on the face authentication process or the iris authentication process.

Therefore, the biometric authentication device 12x exhibits the effects described in the section [Effects of the Invention] according to the above configuration.

Although each embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and further modifications, substitutions, and adjustments can be made without departing from the basic technical idea of the present invention. Can be added. For example, the composition of the elements shown in each drawing is an example for facilitating the understanding of the present invention, and is not limited to the composition shown in these drawings.

Further, a part or all of the above-described embodiment may be described as in the following appendix, but is not limited to the following.
(Appendix 1)
For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is the target of face authentication processing or iris authentication processing is displayed. An imaging direction indicating unit that adjusts the imaging direction so as to be included in the captured image transmitted from the imaging device by the imaging.
An imaging instruction unit that instructs the imaging device to perform the imaging,
An output unit that outputs the result of the face authentication process or the iris authentication process for the person to be authenticated performed by the captured image transmitted from the image pickup device.
A biometric authentication device.
(Appendix 2)
The biometric authentication device according to Appendix 1, wherein the imaging direction indicating unit adjusts the imaging direction so that at least an image of the face of the person to be authenticated is included in the captured image.
(Appendix 3)
The biometric authentication device according to Appendix 1 or Appendix 2, wherein the imaging direction indicating unit adjusts the imaging direction so that the image from the shoulder to the crown of the person to be authenticated is included in the captured image.
(Appendix 4)
The biometric authentication device according to any one of Supplementary note 1 to Supplementary note 3, wherein the imaging direction indicating unit performs the imaging direction adjustment by extracting the contour line of the person to be authenticated from the captured image. ..
(Appendix 5)
The biometric authentication device according to Appendix 4, wherein the imaging direction indicating unit performs the imaging direction adjustment by deriving the center of the face from the contour line.
(Appendix 6)
Addendum 1 to further provided with a light amount indicating unit for adjusting the light amount when the image pickup device performs the image pickup with respect to the illumination device that irradiates the illumination light in the direction including the image pickup direction at the time of the image pickup. The biometric authentication device according to any one of Appendix 4.
(Appendix 7)
The light amount indicating unit sets the light amount when the image is taken to adjust the imaging direction to be lower than the light amount when the captured image for performing the face recognition process is imaged. The described biometrics device.
(Appendix 8)
The lighting device can perform illumination direction adjustment, which is at least vertical adjustment of the illumination direction, which is the main direction of the irradiation.
Further, an illumination direction indicating unit for instructing the illumination direction when the imaging device is made to perform the imaging is provided.
The biometric authentication device according to Appendix 6 or Appendix 7.
(Appendix 9)
The living body according to Appendix 8, wherein the illumination direction indicating unit causes the illumination device to adjust the illumination direction so that the illumination direction faces a portion other than the vicinity of the eyes of the person to be authenticated. Authentication device.
(Appendix 10)
The biometric authentication device according to Appendix 9, wherein the portion other than the vicinity of the eyes includes at least one of the lips and the forehead of the subject to be authenticated.
(Appendix 11)
The illumination direction indicating unit adjusts the illumination direction with respect to the first illumination device, which is the illumination device, so that the illumination direction is a portion other than the vicinity of the eyes including the lips of the person to be authenticated. Let me
The illumination direction indicating unit is such that the illumination direction is a portion other than the vicinity of the eyes including the forehead of the person to be authenticated with respect to the second illumination device which is the illumination device which is not the first illumination device. The biometric authentication device according to Appendix 9 or Appendix 10, which causes the subject to adjust the illumination direction.
(Appendix 12)
The biometric authentication device according to any one of Supplementary note 6 to Supplementary note 11, further comprising the lighting device.
(Appendix 13)
The biometric authentication device according to any one of Supplementary note 1 to Supplementary note 12, further comprising the image pickup device.
(Appendix 14)
Of Appendix 1 to Appendix 13, the information output unit that outputs information to the person to be authenticated is further provided with an information output instruction unit that outputs information for correcting the position of the person to be authenticated in the left-right direction. The biometric authentication device described in any one.
(Appendix 15)
For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is the target of face authentication processing or iris authentication processing is displayed. An imaging direction instruction is given so that the imaging direction is adjusted so as to be included in the captured image transmitted from the imaging device by the imaging.
An imaging instruction related to the imaging is given to the imaging device, and the imaging device is instructed to perform the imaging.
The result of the face authentication process or the iris authentication process for the person to be authenticated performed by the captured image transmitted from the image pickup device is output.
Biometric authentication method.
(Appendix 16)
For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is a target person of face recognition processing or iris recognition processing is displayed. A process of giving an image pickup direction adjustment instruction to adjust the image pickup direction so as to be included in the image pickup image transmitted from the image pickup apparatus by the image pickup, and a process of giving an image pickup direction adjustment instruction.
The process of instructing the imaging device to perform the imaging and
A process of outputting the result of the face authentication process or the iris authentication process of the person to be authenticated performed by the captured image transmitted from the image pickup apparatus, and a process of outputting the result of the iris authentication process.
A biometric program that lets your computer run.

Here, the image pickup apparatus capable of adjusting the image pickup direction and performing the image pickup in the above description is, for example, the image pickup unit 3 of FIG. 1 or FIG. Further, the imaging direction indicating unit is, for example, a portion of the processing unit 12 of FIG. 1 that performs processing of S111 of FIG. 4 or S124 of FIG. Further, the image pickup instruction unit and, for example, the processing unit 12 of FIG. 1 are the parts that perform the processing of S108 of FIG. 4 and the processing of S129 of FIG. 5 or S146 of FIG.

Further, the output unit is, for example, a portion of the processing unit 12 of FIG. 1 that performs the processing of S155 or the processing of S158 of FIG. Further, "the imaging direction adjustment is performed so that at least the image of the face of the person to be authenticated is included in the captured image" is, for example, by performing the processing of S108 of FIG. 4 to S130 of FIG. be.

Further, "the imaging direction adjustment is performed so that the image from the shoulder to the crown of the person to be authenticated is included in the captured image" is, for example, the processing of S108 to S130 of FIG. To do. Further, "the imaging direction adjustment is performed by extracting the contour line of the person to be authenticated from the captured image" is, for example, the processing of S108 of FIG. 4 to S130 of FIG.

Further, "the adjustment of the imaging direction is performed by deriving the center of the face from the contour line" is, for example, processing of S108 of FIG. 4 to S130 of FIG. Further, the illuminating device that irradiates the illumination light in the direction including the imaging direction at the time of the imaging is, for example, the light emitting unit 11 of FIG. 1 or FIG. 3 or the light emitting unit 71 of FIG. Further, the light intensity indicating unit is, for example, a portion of the processing unit 12 of FIG. 1 that performs the processing of S105 of FIG. 4 or the processing of S142 of FIG.

Further, "the amount of light when the image is taken to adjust the imaging direction is made lower than the amount of light when the image to be imaged for performing the face recognition process is imaged" is shown in, for example, the figure. The first set value of the process of S105 in 4 is set lower than the second set value of the process of S142 of FIG. Further, "the illumination direction adjustment which is the adjustment of at least the vertical direction of the illumination direction which is the main direction of the irradiation" is, for example, the process of S111 in FIG.

Further, the "illumination direction indicating unit for instructing the illumination direction when the imaging device performs the imaging" is, for example, the processing of S111 of FIG. 4 or the processing of S124 of FIG. 5 of the processing unit 12 of FIG. Is the part to do. Further, "the lighting device is made to adjust the lighting direction so that the lighting direction faces a portion other than the vicinity of the eyes of the person to be authenticated" is, for example, the process of S144 in FIG. Is.

Further, "including at least one of the lips and the forehead of the person to be authenticated" is, for example, the process of S144 in FIG. Further, the first lighting device is, for example, the light emitting unit 11 of FIG. Further, the second lighting device is, for example, the light emitting unit 71 of FIG. Further, the information output instruction unit is, for example, a portion of the processing unit 12 of FIG. 1 that performs the processing of S128 of FIG. Further, the computer is, for example, a computer including the processing unit 12 and the storage unit 13 of FIG.

Further, the biometric authentication program is, for example, a program that causes the computer to execute a process, and is stored in, for example, a storage unit 13.

1, 7 Light diffuser 2 Person detection unit 3 Imaging unit 4 Audio output unit 5 Housing 6 Authentication medium reader 8 Wall 11, 71 Light emitting unit 12 Processing unit 12ax Imaging direction indicator 12bx Imaging indicator 12cx Output 13 Storage 31 Imaging execution unit 32 Imaging direction adjustment unit 33 Imaging processing unit 34 Protective glass 99a Arrow 100, 12x Biometric authentication device 111 Light emitting element unit 112 Light emitting direction adjustment unit

Claims (10)

For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is the target of face authentication processing or iris authentication processing is displayed. An imaging direction indicating unit that adjusts the imaging direction so as to be included in the captured image transmitted from the imaging device by the imaging.
An imaging instruction unit that instructs the imaging device to perform the imaging,
An output unit that outputs the result of the face authentication process or the iris authentication process for the person to be authenticated performed by the captured image transmitted from the image pickup apparatus.
Equipped with a,
An illuminating device that irradiates illumination light in a direction including the imaging direction at the time of imaging is further provided with a light amount indicating unit that causes the imaging device to adjust the amount of light when performing the imaging.
The light intensity instructing unit, the amount of time for the imaging in order to perform the imaging direction adjustment, you said captured image for performing the face authentication processing lower than the amount of time for the imaging, biometrics Device. For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is the target of face authentication processing or iris authentication processing is displayed. An imaging direction indicating unit that adjusts the imaging direction so as to be included in the captured image transmitted from the imaging device by the imaging.
An imaging instruction unit that instructs the imaging device to perform the imaging,
An output unit that outputs the result of the face authentication process or the iris authentication process for the person to be authenticated performed by the captured image transmitted from the image pickup apparatus.
With
An illuminating device that irradiates illumination light in a direction including the imaging direction at the time of imaging is further provided with a light amount indicating unit that causes the imaging device to adjust the amount of light when performing the imaging.
The lighting device can perform illumination direction adjustment, which is at least vertical adjustment of the illumination direction, which is the main direction of the irradiation.
A biometric authentication device further comprising an illumination direction indicating unit for instructing the illumination direction when the imaging device is made to perform the imaging. The biometric authentication device according to claim 1 or 2 , wherein the imaging direction indicating unit adjusts the imaging direction by extracting the contour line of the person to be authenticated from the captured image. The biometric authentication device according to claim 3 , wherein the imaging direction indicating unit performs the imaging direction adjustment by deriving the center of the face from the contour line. The illumination direction indicating unit is described in claim 2 , wherein the illumination direction indicating unit causes the illumination device to adjust the illumination direction so that the illumination direction faces a portion other than the vicinity of the eyes of the person to be authenticated. Biometric authentication device. The biometric authentication device according to claim 5 , wherein the portion other than the vicinity of the eyes includes at least one of the lips and the forehead of the person to be authenticated. For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is a target person of face recognition processing or iris recognition processing is displayed. The imaging direction is adjusted so as to be included in the captured image transmitted from the imaging device by the imaging.
Instruct the imaging device to perform the imaging,
The result of the face authentication process or the iris authentication process for the person to be authenticated performed by the captured image transmitted from the image pickup device is output.
The lighting device that irradiates the illumination light in the direction including the imaging direction at the time of the imaging is further adjusted in the amount of light when the imaging device performs the imaging.
The amount of light when the image is taken to adjust the imaging direction is made lower than the amount of light when the captured image for performing the face recognition process is imaged.
Biometric authentication method. For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is a target person of face recognition processing or iris recognition processing is displayed. The imaging direction is adjusted so as to be included in the captured image transmitted from the imaging device by the imaging.
Instruct the imaging device to perform the imaging,
The result of the face authentication process or the iris authentication process for the person to be authenticated performed by the captured image transmitted from the image pickup device is output.
The lighting device that irradiates the illumination light in the direction including the imaging direction at the time of the imaging is further adjusted in the amount of light when the imaging device performs the imaging.
The lighting device can perform illumination direction adjustment, which is at least vertical adjustment of the illumination direction, which is the main direction of the irradiation.
Further instructing the illumination direction when causing the image pickup apparatus to perform the image pickup.
Biometric authentication method. For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is the target of face authentication processing or iris recognition processing is displayed. A process of adjusting the imaging direction so as to be included in the captured image transmitted from the imaging device by the imaging, and a process of adjusting the imaging direction.
The process of instructing the imaging device to perform the imaging and
A process of outputting the result of the face authentication process or the iris authentication process of the person to be authenticated performed by the captured image transmitted from the image pickup apparatus.
Let the computer run
A computer is further made to perform a process of adjusting the amount of light when the imaging device performs the imaging on the illumination device that irradiates the illumination light in a direction including the imaging direction at the time of the imaging.
In the process of adjusting the amount of light, a process of lowering the amount of light when the image is taken to adjust the imaging direction is lower than the amount of light when the captured image for performing the face recognition process is imaged. Let the computer run
Biometric program. For an imaging device capable of adjusting the imaging direction, which is at least vertical adjustment of the imaging direction related to imaging, and the imaging device, an image including the face of a person to be authenticated who is the target of face authentication processing or iris recognition processing is displayed. A process of adjusting the imaging direction so as to be included in the captured image transmitted from the imaging device by the imaging, and a process of adjusting the imaging direction.
The process of instructing the imaging device to perform the imaging and
A process of outputting the result of the face authentication process or the iris authentication process of the person to be authenticated performed by the captured image transmitted from the image pickup apparatus.
Let the computer run
A computer is further made to perform a process of adjusting the amount of light when the imaging device performs the imaging on the illumination device that irradiates the illumination light in a direction including the imaging direction at the time of the imaging.
The lighting device can perform illumination direction adjustment, which is at least vertical adjustment of the illumination direction, which is the main direction of the irradiation.
Further causes the computer to perform a process of instructing the illumination direction when the image pickup apparatus is made to perform the image pickup.
Biometric program.

Images