JP7247972B2 - Information processing device, camera control method, program, camera device, and image processing system - Google Patents

Description

The present invention relates to an information processing device, a camera control method, a program, a camera device, and an image processing system.

In Japanese Patent Laid-Open No. 2002-200010, values indicating the evaluation of the state (position, orientation, etc.) of a camera that generates an image are described from the viewpoint of how well an object (person, etc.) appears in the image in a state suitable for image processing. Techniques for calculating are disclosed. Specifically, the following patent document 1 describes (1) the resolution of the target object in the image, (2) the gaze point angle to the target object (the straight line connecting the camera position and the gaze point position in the target object and the ground and (3) the degree of overlap between the target region (the region in real space captured by the camera) and the target object view region (the region in real space where the target object model fits in the image). , discloses a technique for calculating an evaluation value indicating whether or not the current camera state (camera parameters) is suitable for image processing.

Republished patent WO2014/002398

2. Description of the Related Art In a system that performs authentication processing for authenticating a person using an image of a person, camera settings are one of the main factors that determine the accuracy of personal authentication processing. If the camera settings are inappropriate, the accuracy of the authentication process using the image generated by the camera will be lowered. Therefore, when the system is introduced, it is necessary to adjust the camera settings so that they are optimal, but this adjustment work takes considerable time and effort.

The present invention has been made in view of the above problems. One object of the present invention is to provide a technique for reducing the workload at the time of system installation in a system for processing images generated by a camera.

The information processing device of the present invention includes:
accumulating means for accumulating in a storage area a score obtained by authentication processing using an image of a person and camera settings when the camera generated the image;
recommended setting determination means for determining recommended settings of the camera based on the correspondence relationship between the score and the camera settings;
camera control means for controlling the camera based on the recommended settings;
Prepare.

The camera control method of the present invention includes:
the computer
accumulating in a storage area the score obtained by the authentication processing of the person in the image and the camera settings when the camera generated the image;
determining recommended settings for the camera based on a correspondence relationship between the scores accumulated in the storage area and the camera settings;
controlling the camera based on the recommended settings;
Including.

A program of the present invention causes a computer to execute the camera control method described above.

The camera of the present invention is used in an image processing system which will be described later.

The image processing system of the present invention is
A camera that generates an image of a person while changing the camera settings,
authentication means for performing authentication processing using the image;
accumulation means for accumulating in a storage area the score obtained by the authentication process and camera settings when the camera generated the image;
recommended setting determination means for determining recommended settings of the camera based on the correspondence relationship between the scores accumulated in the storage area and the camera settings;
camera control means for controlling the camera based on the recommended settings;
Prepare.

According to the present invention, in a system for processing images generated by a camera, it is possible to reduce the workload at the time of system introduction.

1 is a diagram illustrating the configuration of an image processing system according to a first embodiment; FIG. 2 is a block diagram illustrating the hardware configuration of an information processing device; FIG. It is a block diagram which illustrates the hardware constitutions of a camera. 4 is a sequence diagram illustrating the flow of processing executed by the image processing system of the first embodiment; FIG. FIG. 10 is a diagram showing an example of a database that associates and stores authentication processing results and camera settings; FIG. 10 is a diagram showing another example of a database that associates and stores authentication processing results and camera settings; FIG. 10 is a diagram showing another example of a database that associates and stores authentication processing results and camera settings; FIG. 10 is a diagram illustrating the configuration of an image processing system according to a second embodiment; FIG. FIG. 10 is a sequence diagram showing the flow of processing until individual recommended settings are accumulated in a recommended setting storage unit; FIG. 4 is a diagram showing an example of information stored in a recommended setting storage unit; FIG. FIG. 10 is a sequence diagram showing the flow of processing for controlling a camera using recommended settings for each individual;

An image processing system according to the present invention automatically determines recommended camera settings (hereinafter also referred to as "recommended settings") for a camera that generates an image (an image of a person) used as an input for person authentication processing. , has the function of controlling the camera based on the determined recommended settings. In this specification, the term "camera settings" refers to settings that affect at least one of the shooting range of the camera, how the subject (person) is captured, and image quality. Specifically, the camera settings include at least one of posture (panning and tilting angles), shooting magnification, exposure time length (shutter speed), brightness, saturation, shooting resolution, and compression quality.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. Moreover, in each block diagram, each block does not represent a configuration in units of hardware, but a configuration in units of functions, unless otherwise specified. Also, the directions of the arrows in the drawings are for making the flow of information easier to understand, and the direction of communication (one-way communication/two-way communication) is not limited unless otherwise specified.

[First embodiment]
<Functional Configuration of Information Processing Device 10>
FIG. 1 is a diagram illustrating the configuration of an image processing system 1 according to the first embodiment. An image processing system 1 illustrated in FIG. 1 includes an information processing device 10 and a camera 20 .

As shown in FIG. 1, the information processing apparatus 10 includes an authentication unit 110, a storage unit 120, a recommended setting determination unit 130, and a camera control unit 140. The authentication unit 110 acquires an image generated by the camera 20 and performs authentication processing of a person appearing in the image. The storage unit 120 associates a score (authentication score) obtained in authentication processing using an image of a person with the camera settings when the camera 20 generated the image, and stores them in a predetermined storage area. . The recommended setting determination unit 130 determines recommended settings for the camera 20 based on the information (correspondence relationship between the authentication score and the camera settings) accumulated in a predetermined storage area. The camera control section 140 controls the camera 20 based on the recommended settings determined by the recommended setting determination section 130 .

<Hardware Configuration Example of Information Processing Device 10>
Each functional configuration unit of the information processing apparatus 10 may be implemented by hardware (eg, hardwired electronic circuit) that implements each functional configuration unit, or may be implemented by a combination of hardware and software (eg, combination of an electronic circuit and a program for controlling it, etc.). A case where the information processing apparatus 10 implements each functional component by combining hardware and software will be further described below with reference to FIG. FIG. 2 is a block diagram illustrating the hardware configuration of the information processing device 10. As shown in FIG.

The information processing device 10 includes a control board 1000 . The control board 1000 has a bus 1010 , a processor 1020 , a memory 1030 , a storage device 1040 , an input/output interface 1050 and a network interface 1060 .

A bus 1010 is a data transmission path through which the processor 1020, the memory 1030, the storage device 1040, the input/output interface 1050, and the network interface 1060 mutually transmit and receive data. However, the method of connecting processors 1020 and the like to each other is not limited to bus connection.

The processor 1020 is a processor realized by a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or the like.

The memory 1030 is a main memory implemented by RAM (Random Access Memory) or the like.

The storage device 1040 is an auxiliary storage device such as a HDD (Hard Disk Drive), SSD (Solid State Drive), memory card, or ROM (Read Only Memory). The storage device 1040 stores program modules that implement each function of the information processing apparatus 10 (authentication unit 110, storage unit 120, recommended setting determination unit 130, camera control unit 140, etc.). Each function corresponding to each program module is realized by the processor 1020 reading each program module into the memory 1030 and executing it.

The input/output interface 1050 is an interface for connecting the information processing apparatus 10 and various input/output devices. The input/output interface 1050 can be connected to input devices (not shown) such as a keyboard and mouse, and output devices (not shown) such as a display and speakers.

A network interface 1060 is an interface for connecting the information processing apparatus 10 to a network. This network is, for example, a LAN (Local Area Network) or a WAN (Wide Area Network). A method for connecting the network interface 1060 to the network may be a wireless connection or a wired connection. In the example of FIG. 2 , the information processing device 10 is connected to the camera 20 via the network interface 1060 . The information processing apparatus 10 can communicate with the camera 20 via the network interface 1060 to acquire an image of a person and camera settings for the image. Further, the information processing apparatus 10 can communicate with the camera 20 via the network interface 1060 and transmit information indicating the recommended settings of the camera 20 determined by the recommended settings determination unit 130 to the camera 20 .

<Functional Configuration of Camera 20>
The camera 20 is installed so as to include a predetermined area in its photographing range. The predetermined area includes, for example, an area provided with a gate for managing entry and exit of people, and an area set as an area to be monitored. The camera 20 photographs a person existing in a predetermined area while changing camera settings. As illustrated in FIG. 1 , the camera 20 includes a transmission section 210 , a setting change section 220 and an image pickup section 230 . The imaging unit 230 is a camera module including an optical system such as an imaging device and a lens. The transmission unit 210 transmits an image of a person generated using the imaging unit 230 and camera settings when the camera 20 (imaging unit 230) generated the image to the information processing device 10 (external device). do. The setting change unit 220 changes information indicating camera settings recommended when the camera 20 (imaging unit 230) generates an image of a person (hereinafter also referred to as “recommended setting information”) to the information processing apparatus 10 (external device). In addition, the setting change unit 220 changes the camera settings of the camera 20 (imaging unit 230) based on the recommended setting information acquired from the information processing device 10. FIG.

<Hardware Configuration Example of Camera 20>
FIG. 3 is a block diagram illustrating the hardware configuration of the camera 20. As shown in FIG.

The camera 20 is configured including a control board 2000 . The control board 2000 has a bus 2010 , a processor 2020 , a memory 2030 , a storage device 2040 , an input/output interface 2050 and a network interface 2060 .

A bus 2010 is a data transmission path through which the processor 2020, the memory 2030, the storage device 2040, the input/output interface 2050, and the network interface 2060 mutually transmit and receive data. However, the method of connecting the processors 2020 and the like to each other is not limited to bus connection.

The processor 2020 is a processor realized by a CPU (Central Processing Unit), a DSP (Digital Signal Processor), or the like.

The memory 2030 is a main memory implemented by a RAM (Random Access Memory) or the like.

The storage device 2040 is an auxiliary storage device such as a HDD (Hard Disk Drive), SSD (Solid State Drive), memory card, or ROM (Read Only Memory). The storage device 2040 stores program modules that implement each function of the camera 20 (transmitting section 210, setting changing section 220, imaging section 230, etc.). Each function corresponding to each program module is realized by the processor 2020 reading each program module into the memory 2030 and executing it.

The input/output interface 2050 is an interface for connecting various modules to the control board 2000 . As shown in FIG. 3, the input/output interface 2050 is connected with a camera module 2052 and the like. The camera module 2052 includes an imaging device such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor), an image processing engine that generates image data based on the output signal of the imaging device, and the orientation of the camera 20 ( pan and tilt angles), imaging magnification of the camera 20, a mechanism for controlling the shutter speed of the camera 20, and the like.

A network interface 2060 is an interface for connecting the camera 20 to a network. This network is, for example, a LAN (Local Area Network) or a WAN (Wide Area Network). A method for connecting the network interface 2060 to the network may be a wireless connection or a wired connection. In the example of FIG. 3, camera 20 is connected to information processing apparatus 10 via network interface 2060 . The camera 20 can communicate with the information processing apparatus 10 via the network interface 2060 and transmit to the information processing apparatus 10 an image of a person and the camera settings used when the image was generated. Also, the camera 20 can communicate with the information processing apparatus 10 via the network interface 2060 and acquire information indicating the recommended settings of the camera 20 determined by the recommended settings determination unit 130 .

<Process flow>
FIG. 4 is a sequence diagram illustrating the flow of processing executed by the image processing system 1 of the first embodiment.

First, the camera 20 takes an image while changing camera settings (S102). Then, the transmission unit 210 transmits the image generated in the process of S102 and the information indicating the camera settings when the image was generated to the information processing apparatus 10 (S104).

Then, using the image obtained from the camera 20, the authentication unit 110 executes authentication processing of the person appearing in the image (S106). For example, the authentication unit 110 acquires from the camera 20 an image of a person passing through a gate that manages entry and exit to a specific area, and performs authentication processing on the person shown in the image. Also, for example, the authentication unit 110 acquires from the camera 20 an image of a person present in a specific monitoring area (for example, a large-scale commercial facility, an event venue, etc.), and performs authentication processing on the person in the image. .

In the authentication process of S106, the authentication unit 110 acquires information indicating the authenticated person and the degree of certainty (authentication score) that the person appearing in the image is the authenticated person. Specifically, first, the authentication unit 110 processes an image acquired from the camera 20, extracts a plurality of feature points (points indicating a person's eyes, nose, mouth, etc.), and indicates the arrangement of these feature points. get the data. Authentication unit 110 then compares the data indicating the arrangement of the feature points with registered data registered in advance for personal authentication, and calculates the degree of similarity between the data. Then, the authenticating unit 110 regards the person corresponding to the registered data for which the degree of similarity equal to or greater than a predetermined reference value is obtained (the registered data for which the highest degree of similarity is obtained when there are multiple data) as the “authenticated person”. Along with specifying, the degree of similarity is obtained as an authentication score.

Then, the storage unit 120 associates the result of the authentication process (the authenticated person and the authentication score) obtained in the process of S106 with the camera settings and stores them in a predetermined storage area (S108). The accumulation unit 120 accumulates results of authentication processing using each image (authenticated person and authentication score) and camera settings in a database built in the storage device 1040, for example.

Then, the recommended setting determination unit 130 determines recommended settings recommended when the camera 20 generates an image based on the correspondence relationship between the authentication score and the camera settings accumulated in the storage area (S110). Here, the recommended setting determination unit 130 can execute processing for determining recommended settings at any timing. For example, the recommended setting determination unit 130 may be configured to determine recommended settings using information accumulated in a database each time a predetermined period of time elapses. In addition, when the statistical value (such as an average value) of authentication scores obtained in the most recent authentication process falls below a reference value for determining whether camera settings need to be updated, the recommended setting determination unit 130 stores the score in the database. The stored information may be used to determine recommended settings. By reviewing the recommended settings of the camera 20 periodically or when a predetermined condition regarding the authentication score is satisfied, it is possible to maintain the accuracy of generating an image with a good authentication score.

Here, a flow of the recommended setting determination unit 130 determining the recommended settings based on the correspondence relationship between the authentication scores accumulated in the storage area and the camera settings will be described. As an example, when there is only one person to be authenticated, or when a person having average physical characteristics is identified in advance among the persons to be authenticated, the recommended setting determining unit 130 A camera setting that gives the highest authentication score for a specific person can be specified, and that camera setting can be determined as a recommended setting for the camera 20 . As a specific example, let us consider a case where information as illustrated in FIG. 5 is stored in a database. FIG. 5 is a diagram showing an example of a database that associates and stores authentication processing results and camera settings. The database exemplified in FIG. 5 stores the results of authentication processing for a specific person (person A) in association with authentication scores. In the example of FIG. 5, the authentication score for the camera setting of "setting 7" is the maximum value of "92". In this case, the recommended setting determining unit 130 determines the camera setting of “setting 7” with the highest authentication score as the recommended setting of the camera 20 .

As another example, when a plurality of persons are subject to the authentication process, the recommended setting determination unit 130 refers to information accumulated in the database, and selects cameras whose authentication scores of the plurality of persons are equal to or higher than a predetermined reference value. A setting may be identified and determined as the recommended setting for the camera 20 . As a specific example, let us consider a case where information as shown in FIG. 6 is stored in the database and the predetermined reference value for the authentication score is "70". FIG. 6 is a diagram showing another example of a database that associates and stores authentication processing results and camera settings. In the example of FIG. 6, with the camera setting of "setting 1", the authentication scores of the plurality of persons A to C are equal to or higher than a predetermined reference value. On the other hand, in the camera setting of "setting 2", the authentication scores of persons A and C are equal to or higher than the predetermined reference value, but the authentication score of person C is less than the predetermined reference value. In this case, the recommended setting determining unit 130 determines the camera setting “setting 1” as the recommended setting for the camera 20 .

It is also assumed that information as shown in FIG. 7 is stored in the database, and that the predetermined reference value for the authentication score is "70". FIG. 7 is a diagram showing another example of a database that associates and stores authentication processing results and camera settings. In the example of FIG. 7, the authentication scores of persons A to C are equal to or higher than a predetermined reference value in the camera settings of "Setting 1" and "Setting 3". In this way, when there are a plurality of candidate camera settings, the recommended setting determination unit 130 may be configured to determine the recommended settings based on the statistically processed values of the authentication scores of a plurality of persons. . For example, in the example of FIG. 7, with the camera setting of "setting 1", the total value of the authentication scores of persons A to C is "225", and the average value is "75". On the other hand, in the camera setting of "setting 3", the total value of the authentication scores of persons A to C is "270", and the average value is "90". In such a case, the recommended setting determination unit 130 determines the camera setting of “Setting 3”, which has a large statistical processing value such as the total value and the average value, as the recommended setting of the camera 20 .

Returning to FIG. 4, in order to change the camera settings of the camera 20 to the recommended settings determined in the process of S110, the camera control unit 140 generates recommended setting information indicating the recommended settings and transmits it to the camera 20 (S112). ). The recommended setting information includes at least one of the camera 20 orientation (panning or tilting angle), imaging magnification, exposure time length (shutter speed), brightness, saturation, shooting resolution, and compression quality. This is information indicating the set value to be set. By transmitting the recommended setting information to the camera 20, the camera control unit 140 controls the attitude (pan or tilt angle) of the camera 20, the imaging magnification of the camera 20, the length of the exposure time (shutter speed) of the camera 20, and the brightness. , saturation, capture resolution, and/or compression quality.

After obtaining the recommended setting information from the information processing apparatus 10, the setting change unit 220 changes the camera setting of the camera 20 to the recommended setting indicated by the recommended setting information (S114). Specifically, the setting change unit 220 controls the mechanism for controlling the attitude (pan or tilt angle) of the camera 20 and the imaging magnification of the camera 20 according to the camera settings indicated by the recommended setting information acquired from the information processing apparatus 10. mechanism to control the shutter speed of the camera 20, or an image processing engine (the part that controls brightness, saturation, shooting resolution, compression quality, etc.) that generates an image based on the output signal of the image sensor. do. As a result, at least one of the orientation of the camera 20, imaging magnification, length of exposure time (shutter speed), brightness, saturation, shooting resolution, and compression quality is changed as recommended.

<Action/effect>
In this embodiment, first, a score (authentication score) obtained by authentication processing using an image is associated with the camera settings of the camera 20 when the image was generated and stored in a storage area. Then, based on the information accumulated in the storage area in this way, camera settings (recommended settings) of the camera 20 that are recommended for generating an image that provides an authentication result with a high degree of certainty are determined. be notified. Then, the camera settings of the camera 20 are automatically changed to the recommended settings. That is, the adjustment work of the camera 20 for obtaining an image suitable for authentication processing is automated. According to the configuration of this embodiment, the administrator of the image processing system 1 can expect the effect of reducing the workload at the time of system introduction. In addition, since it is possible to provide the image processing system 1 at a low cost by reducing the labor cost by reducing the workload at the time of system introduction, an effect of promoting the use of the image processing system 1 can be expected.

<Modification>
If the camera 20 is a so-called intelligent camera equipped with a processor for image processing, at least a part of the processing section included in the information processing apparatus 10 can be provided in the camera 20 . For example, the camera 20 (intelligent camera) has a processing unit (a processing unit corresponding to the authentication unit 110) that executes authentication processing using a face image, and the information processing device 10 includes the storage unit 120 and the recommended setting determination unit 130. , and a camera control unit 140 . In this case, a processing unit corresponding to the authentication unit 110 provided in the camera 20 executes authentication processing using an image, and the information processing device 10 sends the authentication score and camera settings obtained by the authentication processing to the camera 20. and stores it in the storage device 1040 or the like. Then, the information processing apparatus 10 determines recommended settings based on the accumulated information (a combination of the authentication score and the camera settings), and notifies the camera 20 of the recommended settings. With such a configuration as well, the effects described above can be obtained.

Further, the recommended setting determination unit 130 may be configured to determine recommended settings for each temporal condition based on the operation timing of the camera 20 (the timing at which the image is generated by the camera 20). For example, the recommended setting determining unit 130 determines recommended settings for each season, recommended settings for each time period, recommended settings for each month or day of the week, etc., based on the operation timing of the camera 20 (timing at which an image is generated by the camera 20). may be configured to determine the By doing so, it is possible to stably obtain the above effects by absorbing differences in recommended settings caused by differences in environmental light (light received by the imaging device of the camera 20) depending on the time of day, season, and the like. can be done.

[Second embodiment]
So-called multi-factor authentication is a combination of biometric authentication that uses a person's physical characteristics such as a facial image, knowledge authentication that uses knowledge that only the person can know, such as a password, and property authentication that uses an item that only the person has, such as an IC card. sometimes adopted. In this embodiment, an example of the configuration of the image processing system 1 when multi-factor authentication is adopted will be described. This embodiment is similar to the first embodiment described above, except for the points described below.

<Example of functional configuration>
FIG. 8 is a diagram illustrating the configuration of the image processing system 1 according to the second embodiment. As shown in FIG. 8 , the image processing system 1 of this embodiment includes an information processing device 10 , a camera 20 and a reading device 30 . The reading device 30 is a device for reading an IC card 40 storing information (personal identification information) for individually identifying a person.

Also, the recommended setting determination unit 130 of the present embodiment determines recommended settings of the camera 20 for each person based on the correspondence relationship between the authentication score and the camera settings, and stores the recommended settings for each person in the recommended setting storage unit 132. memorize to Also, the camera control unit 140 of this embodiment operates as follows. First, the camera control unit 140 acquires personal identification information read from the IC card 40 by the reader 30 . Then, the camera control unit 140 identifies the recommended setting corresponding to the acquired personal identification information from the individual recommended settings stored in the recommended setting storage unit 132 . Then, the camera control unit 140 controls the camera 20 based on the identified recommended settings.
<Process flow>
FIG. 9 is a sequence diagram showing the flow of processing until recommended settings for each individual are accumulated in the recommended setting storage unit 132. As shown in FIG.

First, the camera 20 takes an image while changing camera settings (S202). Then, the transmission unit 210 transmits the image generated in the process of S102 and the information indicating the camera settings when the image was generated to the information processing apparatus 10 (S204). Then, using the image obtained from the camera 20, the authentication unit 110 executes authentication processing of the person appearing in the image (S206). Then, the storage unit 120 associates the result of the authentication process (the authenticated person and the authentication score) obtained in the process of S106 with the camera settings and stores them in a predetermined storage area (S208). Then, the recommended setting determination unit 130 determines recommended settings recommended when the camera 20 generates an image, based on the correspondence relationship between the authentication scores accumulated in the storage area and the camera settings (S210). The processing from S202 to S210 is the same as the processing from S102 to S110 in FIG.

The recommended setting determination unit 130 associates the personal identification information assigned to the person authenticated in the authentication process of S206 with the information indicating the recommended settings determined in S210, and stores them in a storage area such as the storage device 1040. (S212). As a result, information indicating recommended settings for each individual is stored in a storage area such as the storage device 1040 (eg, FIG. 10). FIG. 10 is a diagram showing an example of information stored in the recommended setting storage unit 132. As shown in FIG. The information exemplified in FIG. 10 indicates that the recommended camera setting of the camera 20 when photographing person A is "setting 1", and the recommended camera setting of camera 20 when photographing person B is "setting 2”, and the camera setting of the camera 20 recommended for photographing the person C is “setting 3”.

FIG. 11 is a sequence diagram showing the flow of processing for controlling the camera 20 using individual recommended settings.

First, the reading device 30 performs short-range wireless communication with the IC card 40 to read the personal identification information stored in the IC card 40 and transmits it to the information processing device 10 (S302, S304).

The camera control unit 140 identifies recommended settings based on the personal identification information acquired from the reading device 30 (S306). For example, consider a case where information as shown in FIG. 10 is stored in the recommended setting storage unit 132 . In this case, if the personal identification information acquired in the process of S304 is information indicating person A, the camera control unit 140 changes the camera setting of “setting 1” from the information illustrated in FIG. Can be identified as a recommended setting. Then, the camera control unit 140 transmits to the camera 20 recommended setting information indicating recommended settings for each individual specified in the process of S306 (S308).

When the recommended setting information is acquired from the information processing apparatus 10, the setting changing unit 220 changes the camera setting of the camera 20 to the recommended setting indicated by the recommended setting information (S310). For example, if the recommended setting information acquired in the process of S308 is the recommended settings for person A (“setting 1” camera settings), the setting change unit 220 changes the camera settings of the camera 20 to the recommended settings for person A (“setting 1” camera settings).

<Action/effect>
As described above, in the present embodiment, when a person is authenticated based on the personal identification information acquired from the IC card 40 or the like, the camera settings of the camera 20 that are recommended when photographing the person (recommended settings for each individual) ) is identified. Then, the camera settings of the camera 20 are controlled based on the identified recommended settings. According to the configuration of this embodiment, it is possible to read out and apply optimum camera settings for each person. This can avoid the problem that the optimal camera settings for one person are not suitable for another person. That is, it is possible to expect an effect of lowering the false rejection rate in the biometric authentication process and improving the accuracy of the authentication as a whole.

The embodiments of the present invention have been described above with reference to the drawings. Various modifications, improvements, etc. may be made. A plurality of constituent elements disclosed in the embodiments can be appropriately combined to form various inventions. For example, some constituent elements may be omitted from all the constituent elements shown in the embodiments, or constituent elements of different embodiments may be combined as appropriate.

Also, in the sequence diagram used in the above description, a plurality of steps (processes) are described in order, but the execution order of the steps executed in each embodiment is not limited to the described order. In each embodiment, the order of the illustrated steps can be changed within a range that does not interfere with the content.

Some or all of the above embodiments can also be described as the following additional remarks, but are not limited to the following.
1.
accumulating means for accumulating in a storage area a score obtained by authentication processing using an image of a person and camera settings when the camera generated the image;
recommended setting determination means for determining recommended settings of the camera based on the correspondence relationship between the score and the camera settings;
camera control means for controlling the camera based on the recommended settings;
Information processing device.
2.
The camera control means controls at least one of the posture of the camera, the imaging magnification of the camera, the length of exposure time of the camera, luminance, saturation, imaging resolution, and compression quality.
1. The information processing device according to .
3.
The recommended setting determining means determines the camera setting that gives the highest score as the recommended setting.
1. or 2. The information processing device according to .
4.
The recommended setting determination means determines, as the recommended settings, the camera settings in which the scores of a plurality of persons are equal to or greater than a predetermined reference value.
1. or 2. The information processing device according to .
5.
When there are a plurality of camera settings in which the scores of a plurality of persons are equal to or greater than a predetermined reference value, the recommended setting determining means uses a statistically processed value of the scores calculated for each of the camera settings to determine the determine the recommended settings,
4. The information processing device according to .
6.
The recommended setting determining means determines the recommended setting every predetermined period of time.
1. to 5. The information processing apparatus according to any one of.
7.
The recommended setting determination means determines the recommended settings for each temporal condition based on operation timing of the camera.
1. to 6. The information processing apparatus according to any one of.
8.
Further comprising authentication means for performing the authentication process,
1. to 7. The information processing apparatus according to any one of.
9.
The authentication means executes the authentication process for a person who passes through a gate provided in a predetermined area.
8. The information processing device according to .
10.
the computer
accumulating in a storage area the score obtained by the authentication processing of the person in the image and the camera settings when the camera generated the image;
determining recommended settings for the camera based on a correspondence relationship between the scores accumulated in the storage area and the camera settings;
controlling the camera based on the recommended settings;
A camera control method including:
11.
the computer
At least one of the camera attitude, the camera imaging magnification, the camera exposure time length, brightness, saturation, imaging resolution, and compression quality is controlled.
10. further comprising: The camera control method described in .
12.
the computer
determining the camera setting with the highest score as the recommended setting;
10. further comprising: or 11. The camera control method described in .
13.
the computer
determining, as the recommended settings, the camera settings in which the scores of a plurality of persons are greater than or equal to a predetermined reference value;
10. further comprising: or 11. The camera control method described in .
14.
the computer
When there are a plurality of camera settings in which the scores of a plurality of persons are equal to or higher than a predetermined reference value, the recommended settings are determined using a statistically processed value of the scores calculated for each of the camera settings;
13. The camera control method described in .
15.
the computer
Determining the recommended setting every predetermined period of time;
10. further comprising: to 14. A camera control method according to any one of
16.
the computer
determining the recommended setting for each temporal condition based on the operation timing of the camera;
10. further comprising: to 15. A camera control method according to any one of
17.
the computer
performing the authentication process;
10. further comprising: to 16. A camera control method according to any one of
18.
the computer
executing the authentication process for a person who passes through a gate provided in a predetermined area;
17. The camera control method described in .
19.
to the computer;10. to 18. A program for executing the camera control method according to any one of .
20.
being a camera,
transmission means for transmitting an image of a person and camera settings when the camera generated the image to an external device;
setting change means for acquiring from the external device recommended setting information indicating camera settings recommended when the camera generates an image, and changing camera settings of the camera based on the recommended setting information;
A camera with
21.
A camera that generates an image of a person while changing the camera settings,
authentication means for performing authentication processing using the image;
accumulation means for accumulating in a storage area the score obtained by the authentication process and camera settings when the camera generated the image;
recommended setting determination means for determining recommended settings of the camera based on the correspondence relationship between the scores accumulated in the storage area and the camera settings;
camera control means for controlling the camera based on the recommended settings;
An image processing system comprising
22.
The camera control means controls at least one of the posture of the camera, the imaging magnification of the camera, the length of exposure time of the camera, luminance, saturation, imaging resolution, and compression quality.
21. The image processing system described in .
23.
The recommended setting determining means determines the camera setting that gives the highest score as the recommended setting.
21. or 22. The image processing system described in .
24.
The recommended setting determination means determines, as the recommended settings, the camera settings in which the scores of a plurality of persons are equal to or greater than a predetermined reference value.
21. or 22. The image processing system described in .
25.
When there are a plurality of camera settings in which the scores of a plurality of persons are equal to or greater than a predetermined reference value, the recommended setting determining means uses a statistically processed value of the scores calculated for each of the camera settings to determine the determine the recommended settings,
24. The image processing system described in .
26.
The recommended setting determining means determines the recommended setting every predetermined period of time.
21. to 25. The image processing system according to any one of .
27.
The recommended setting determination means determines the recommended settings for each temporal condition based on operation timing of the camera.
21. to 26. The image processing system according to any one of .
28.
Further comprising authentication means for performing the authentication process,
21. to 27. The image processing system according to any one of .
29.
The authentication means executes the authentication process for a person who passes through a gate provided in a predetermined area.
28. The image processing system described in .

1 image processing system 10 information processing device 1000 control board 1010 bus 1020 processor 1030 memory 1040 storage device 1050 input/output interface 1060 network interface 110 authentication unit 120 storage unit 130 recommended setting determination unit 132 recommended setting storage unit 140 camera control unit 20 camera 2000 Control board 2010 Bus 2020 Processor 2030 Memory 2040 Storage device 2050 Input/output interface 2052 Camera module 2060 Network interface 210 Transmission unit 220 Setting change unit 230 Imaging unit 30 Reader 40 IC card

Claims (7)

accumulation means for accumulating, in a storage area, a score obtained by processing using an image of a person and camera settings when the camera generated the image;
recommended setting determination means for determining recommended settings of the camera based on the correspondence relationship between the score and the camera settings;
camera control means for controlling the camera based on the recommended settings;
with
The recommended setting determination means determines, as the recommended settings, the camera settings that satisfy a predetermined condition for the scores of a plurality of persons.
Information processing equipment. The camera control means controls at least one of the posture of the camera, the imaging magnification of the camera, the length of exposure time of the camera, luminance, saturation, imaging resolution, and compression quality.
The information processing device according to claim 1 . The predetermined condition is that the scores of a plurality of persons are equal to or greater than a predetermined reference value,
The information processing apparatus according to claim 1 or 2. When there are a plurality of camera settings in which the scores of a plurality of persons are equal to or greater than a predetermined reference value, the recommended setting determining means uses a statistically processed value of the scores calculated for each of the camera settings to determine the determine the recommended settings,
The information processing apparatus according to claim 3 . The recommended setting determining means determines the recommended setting every predetermined period of time.
The information processing apparatus according to any one of claims 1 to 4 . the computer
accumulating in a storage area a score obtained by processing using an image of a person and camera settings when the camera generated the image;
determining recommended settings for the camera based on a correspondence relationship between the scores accumulated in the storage area and the camera settings;
controlling the camera based on the recommended settings;
including
The computer determines, as the recommended settings, the camera settings that satisfy a predetermined condition for the scores of a plurality of persons.
camera control method. A camera that generates an image of a person while changing the camera settings,
image processing means for executing processing using the image;
accumulation means for accumulating in a storage area the score obtained by the processing and the camera settings when the camera generated the image;
recommended setting determination means for determining recommended settings of the camera based on the correspondence relationship between the scores accumulated in the storage area and the camera settings;
camera control means for controlling the camera based on the recommended settings;
with
The recommended setting determination means determines, as the recommended settings, the camera settings that satisfy a predetermined condition for the scores of a plurality of persons.
image processing system.

Images