JP2004163355A - Guiding device - Google Patents

Abstract

A user can appropriately guide his / her eyes to an image pickup device so as to arrange the position of his / her eyes at a predetermined position in a distance direction and a width direction regardless of effectiveness.
An image pickup unit, a first sound wave generation unit and a second sound wave generation unit for generating an ultrasonic wave in a direction of a predetermined position within an angle of view, and a subject determination unit for determining the presence or absence of a subject. And a control unit 7. The control unit 7 instructs the first sound wave generation unit 2 and the second sound wave generation unit 3 to generate ultrasonic waves, and instructs the imaging unit 5 to perform imaging. When the subject is determined by the subject determining unit 8 to be present, it is determined that the subject has been guided to a predetermined position, and the frequency of the ultrasonic wave generated from the first sound wave generating unit 2 is f1. Assuming that the frequency of the ultrasonic wave generated from the second sound wave generator 3 is f2, the difference between f1 and f2 is the audible frequency.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a guiding device that guides a user to place an eye at a predetermined position.
[0002]
[Prior art]
2. Description of the Related Art In recent years, in a building, room, or the like that requires high security, an authentication device that restricts and manages entry and exit of a third party by performing personal authentication of a person who tries to enter and exit (hereinafter, referred to as a user). Has been put to practical use. One of the leading personal authentication methods in this authentication device is an authentication technique using an iris (iris) pattern, which is one of authentication methods using biometrics of a living body.
[0003]
In such an authentication device, an iris pattern used for authentication is extracted from a user's eye image captured by an imaging device. In general, in such an authentication device, it is necessary to photograph a detailed iris pattern, and therefore, an optical system used for an imaging device often uses a relatively narrow-angle telephoto lens. Furthermore, in view of the cost of the authentication device, it is desirable to use a fixed focus optical system. For this reason, in this type of authentication device, a major problem is how to arrange the user's eyes within a limited angle of view of the optical system and appropriately guide the user's eyes to a position where the optical system of the imaging device is in focus. It was.
[0004]
As a device capable of moving the user's eyes to a predetermined position, as shown in FIG. 5, the user 202 moves the user's eyes to a position where his / her eyes are reflected on the mirror unit 201. Then, when the switch 203 is pressed by itself, the image of the eyes of the user 202 is photographed by an imaging device (not shown) arranged on the back surface of the mirror unit 201 (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-11-15972
[0006]
[Problems to be solved by the invention]
However, the above-described conventional techniques have the following problems.
[0007]
That is, in the case of a system in which this apparatus moves itself to a position where both eyes are reflected in the mirror section, in the horizontal (width) direction in the drawing, that is, in the X direction, the guided position is large depending on the effect of the user. Guiding to an accurate position cannot be performed due to the deviation, and the distance direction between the user and the device is guided to an accurate position because the mirror has a large distance range in which the eyes can be seen. There was a problem that it was not possible.
[0008]
The present invention has been made in view of the above-described problems, and the positional relationship between an imaging device and a user is determined based on an effect so as to be arranged at predetermined positions in a distance direction (Z direction in the drawing) and a width direction (X direction). It is an object of the present invention to provide a guidance device that can appropriately perform guidance without using the guidance device.
[0009]
[Means for Solving the Problems]
The guidance device of the present invention includes an imaging unit that captures an image, a first sound wave generation unit that generates an ultrasonic wave in a direction of a predetermined position within an angle of view of the imaging unit, and generates an ultrasonic wave in a direction of a predetermined position. A second sound wave generator provided at a position different from the first sound wave generator and an image captured by the imaging unit, which determines whether or not the object is present and outputs a corresponding signal; And a control unit that controls the generation of ultrasonic waves from the first sound wave generation unit and the second sound wave generation unit, and the imaging of the imaging unit, and receives a signal output from the subject determination unit, The control unit issues an instruction to generate an ultrasonic wave to the first sound wave generation unit and the second sound wave generation unit, and an instruction to perform imaging to the imaging unit, and determines that a subject exists in the subject determination unit. If determined, the subject is guided to a predetermined position A guiding device for determining, wherein f1 is the frequency of the ultrasonic wave generated from the first sound wave generator and f2 is the frequency of the ultrasonic wave generated from the second sound wave generator. It is characterized in that the difference lies in the audio frequency.
[0010]
With such a configuration, the ultrasonic wave generated from the first sound wave generator and the ultrasonic wave generated from the second sound wave generator generate an audible beat at a predetermined position. By giving an instruction to move to a position where sound can be heard, accurate position guidance can be performed.
[0011]
Next, the guidance device of the present invention includes a first speaker unit and a second speaker unit which are arranged at different positions to generate ultrasonic waves in the direction of the position where the right ear of the user to be guided is to be arranged. A speaker unit, a third speaker unit and a fourth speaker unit, which are arranged at different positions and generate ultrasonic waves in the direction of the position where the left ear of the user to be guided is to be arranged; An imaging unit that captures an image of a subject between the position where the ear should be placed and the position where the left ear should be placed; a subject determination unit that determines the presence or absence of the subject from the image captured by the imaging unit; A control unit that controls generation of ultrasonic waves of the first speaker unit, the second speaker unit, the third speaker unit, and the fourth speaker unit, and capture of an image by the imaging unit, and receives a signal from the subject determination unit; And the control unit controls the first speed. Instruction to generate ultrasonic waves to the first, second, third, and fourth speaker units, and an instruction to perform imaging to the imaging unit. If it is determined that the object is guided to a predetermined position, the guidance device determines that the frequency of the ultrasonic wave generated from the first speaker unit is F1, and the ultrasonic wave generated from the second speaker unit is F1. When the frequency of the sound wave is F2, the frequency of the ultrasonic wave generated from the third speaker unit is F3, and the frequency of the ultrasonic wave generated from the fourth speaker unit is F4, the difference between F1 and F2, and , F3 and F4 are both at audio frequencies.
[0012]
With such a configuration, the user is guided to a position where the right ear can hear the beat of the ultrasonic waves generated from the first speaker unit and the second speaker unit, and the left ear is the third ear. The user can be guided to a more accurate position by guiding the user to a position where the beat of the ultrasonic waves generated from the speaker unit and the fourth speaker unit can be heard.
[0013]
Further, when the audible frequency is 20 Hz or more and 20 kHz or less, it is possible to more appropriately guide the user.
[0014]
Practically, by setting the frequency to be higher than 2 kHz and lower than 4 kHz so that the sensitivity of the human ear is good, the user can be most appropriately guided.
[0015]
Next, the guidance device of the present invention is disposed at different positions from each other, and is disposed at positions different from each other with the first speaker unit and the second speaker unit that generate sound waves having the same frequency in mutually parallel directions. A third speaker unit and a fourth speaker unit that generate sound waves having mutually equal frequencies in directions parallel to each other, and a position where the right ear of the user is to be arranged and a left ear of the user are to be arranged. An imaging unit that captures an image of a subject between positions, a subject determination unit that determines the presence or absence of a subject from an image captured by the imaging unit, a first speaker unit, a second speaker unit, and a third speaker And a control unit that controls generation of sound waves from the unit and the fourth speaker unit and capture of an image by the imaging unit, and receives a signal from the subject determination unit. The control unit includes a first speaker unit and a second speaker unit. Speaker And an instruction to generate a sound wave to the third speaker unit and the fourth speaker unit and an instruction to perform photographing to the image pickup unit. Is determined to have been guided to a predetermined position, wherein the center line of the sound axis of the first speaker unit and the second speaker unit intersects the position where the right ear is to be arranged, and The center line of the sound axis between the first speaker unit and the fourth speaker unit intersects the position where the left ear is to be arranged, and the distance between the first speaker unit and the second speaker unit is the first speaker unit. And the distance between the third speaker unit and the fourth speaker unit is one half of the wavelength of the sound wave generated from the unit and the second speaker unit. Of the wavelength of the sound wave generated from the speaker unit It is characterized by a door.
[0016]
With such a configuration, the user can be guided to an appropriate position by encouraging the user to move to a position where neither the right ear nor the left ear can hear sound.
[0017]
In addition, since the frequency of the sound waves generated from the first speaker unit, the second speaker unit, the third speaker unit, and the fourth speaker unit is not less than 20 Hz and not more than 20 kHz, the sound source of the speaker unit is audible. Since a sound wave in the region can be used, a simpler configuration can be realized.
[0018]
Next, the guidance device of the present invention includes a plurality of sound wave generators that guide the person to be authenticated to a predetermined position using an acoustic interference phenomenon generated by a frequency difference between sound waves generated from each of the plurality of sound sources, An imaging unit arranged between the sound wave generators to capture an eye image of the person to be authenticated, wherein the imager is at least partially overlapped with a line connecting the plurality of sound wave generators when viewed from the person to be authenticated. It is characterized by being arranged in.
[0019]
With such a configuration, it is possible to reduce the size of the guidance device, and since the position of the ear or eye of the person to be authenticated in the height direction does not change with the movement, it is possible to effectively use the sound wave to receive the sound. The certifier can be guided to a predetermined position. Accordingly, it is possible to provide a guidance device suitable for mounting on a device for performing personal authentication using a captured image, for example, an authentication device for an iris, a face, a retina, or the like.
[0020]
In addition, a plurality of sound wave generators that guide an observer to a predetermined position using an acoustic interference phenomenon generated by a frequency difference between sound waves generated from each of the plurality of sound sources, and a plurality of sound wave generators arranged between the plurality of sound wave generators for observation. A display unit that presents a three-dimensional image to the observer, according to a configuration in which, when viewed from the observer, the display unit is arranged so as to at least partially overlap a line connecting the plurality of sound wave generators. Since the size of the apparatus can be reduced, and the positions of the observer's ears and eyes in the height direction do not change with movement, the positions of the eyes can be effectively guided to predetermined positions using sound waves. Thus, it is possible to provide a guidance device suitable for mounting on a three-dimensional display device or the like that requires the observer's eyes to be arranged at a predetermined position.
[0021]
Further, a plurality of sound wave generators for guiding the person to be authenticated to a predetermined position by using an acoustic interference phenomenon generated by a phase difference of sound waves generated from each of the plurality of sound sources, and the plurality of sound wave generators are arranged between the plurality of sound wave generators. An imaging unit that captures an eye image of the person to be authenticated, and the imaging unit is arranged such that, when viewed from the person to be authenticated, at least partially overlaps a line connecting the plurality of sound wave generators, It is possible to reduce the size of the guidance device, and since the position in the height direction of the ear or eye of the person to be authenticated does not change with movement, the person to be authenticated is effectively moved to a predetermined position using sound waves. Can be guided to Accordingly, it is possible to provide a guidance device suitable for mounting on a device for performing personal authentication using a captured image, for example, an authentication device for an iris, a face, a retina, or the like.
[0022]
Furthermore, a plurality of sound wave generators that guide an observer to a predetermined position by using an acoustic interference phenomenon generated by a phase difference of sound waves generated from each of the plurality of sound sources, and are arranged between the plurality of sound wave generators. With a display unit that presents a three-dimensional image to the observer, the display unit, when viewed from the observer, according to a configuration arranged so as to at least partially overlap a line connecting a plurality of sound wave generators, Since the size of the guidance device can be reduced, and the position of the observer's ears and eyes in the height direction does not change with movement, the position of the eyes can be effectively guided to a predetermined position using sound waves. Thus, it is possible to provide a guidance device suitable for mounting on a three-dimensional display device or the like that requires the observer's eyes to be arranged at a predetermined position.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0024]
(First Embodiment)
First, a first embodiment of the present invention will be described. FIG. 1 is a block diagram illustrating a configuration of the guidance device according to the first embodiment of the present invention.
[0025]
The guidance device 1 of the present embodiment is a device for guiding the user 10 to move the head to a predetermined position P1.
[0026]
The guidance device 1 according to the present embodiment generates an ultrasonic wave having a predetermined frequency toward a predetermined position P1, an area including the first sound generation unit 2 and the second sound generation unit 3, and the predetermined position P1. In addition, a sensor unit 4 configured using a known distance measuring sensor, for example, an infrared distance measuring sensor, which detects whether or not the user 10 as a subject exists, an eye image of the user 10 at a predetermined position P1 An optical system 6 which is a fixed-focus lens for capturing an image, an imaging unit 5 which captures an image with light rays condensed via the optical system 6, and a subject is captured in the image captured by the imaging unit 5. Control unit connected to each of the first sound wave generation unit 2, the second sound wave generation unit 3, the sensor unit 4, the imaging unit 5, and the object judgment unit 8 A part 7 is provided.
[0027]
The control unit 7 controls the generation of ultrasonic waves from the first sound wave generation unit 2 and the second sound wave generation unit 3, the sensing of the sensor unit 4, and the imaging of the imaging unit 5.
[0028]
Furthermore, the guidance device 1 of the present embodiment includes an application execution unit 9 that executes a predetermined application when the user 10 can be guided to an appropriate predetermined position P1. The application execution unit 9 is controlled by the control unit 7 to execute a predetermined application.
[0029]
The image captured by the imaging unit 5 is sent to the application execution unit 9 and is used when executing the application.
[0030]
Known sound sources that generate ultrasonic waves can be used as the first sound wave generator 2 and the second sound wave generator 3. Each sound wave generator is composed of one speaker unit. The first sound wave generator 2 and the second sound wave generator 3 generate an ultrasonic wave toward a predetermined position P1 to which the user 10 is to be guided (in a direction along a dashed line in FIG. 1). It is installed in. Here, the ultrasonic wave refers to a generally defined sound wave having a frequency exceeding 20 kHz.
[0031]
When the frequency of the ultrasonic wave generated from the first sound wave generator 2 is f1 and the frequency of the ultrasonic wave generated from the second sound wave generator 3 is f2, the absolute value of the difference between f1 and f2 is When in the audible range, that is, in the generally defined range from 20 Hz to 20 kHz,
| F1-f2 | = S1
Then
20Hz ≦ S1 ≦ 20kHz
When the user 10 has the relationship, at a predetermined position P1, the ultrasonic wave generated from the first sound wave generator 2 and the ultrasonic wave generated from the second sound wave generator 3 intersect with each other. Due to the beat, a sound in the audible region of the frequency S1 is heard. On the other hand, in an area other than the predetermined position P1, the ultrasonic waves generated from the first sound wave generator 2 and the ultrasonic waves generated from the second sound wave generator 3 may not intersect and interfere with each other. Since there is no beat, no beat occurs, and the user 10 cannot hear the sound.
[0032]
In other words, it instructs the user 10 to move to a position where a beat can be heard (for example, a message such as “Please move to a position where sound can be heard” is posted on the surface of the housing facing the user 10. Or display on a display unit (not shown)), the user 10 can be moved to the position P1 where a beat can be heard.
[0033]
Next, the operation of the guidance device 1 of the present embodiment will be described. In the description, an example will be described in which the guidance device 1 guides the user 10 to place the head of the user 10 at the predetermined position P1 and captures an eye image of the user 10. FIG. 2 is a flowchart showing operation steps of the guidance device.
[0034]
First, the control unit 7 instructs the sensor unit 4 to start sensing whether or not the user 10 as a subject exists in an area including the predetermined position P1. Is started (step S1).
[0035]
The signal from the sensor unit 4 is sent to the control unit 7, and the control unit 7 instructs the sensor unit 4 to continue sensing until the sensor unit 4 detects a signal indicating that a subject has been detected ( Step S2).
[0036]
When an object is detected by the sensor unit 4, the control unit 7 instructs the first sound wave generation unit 2 and the second sound wave generation unit 3 to generate an ultrasonic wave, The sound wave generator 2 and the second sound wave generator 3 generate ultrasonic waves having the above-mentioned predetermined frequencies f1 and f2 (step S3). Further, the above-mentioned guidance message is displayed on a display unit (not shown).
[0037]
Immediately thereafter, the control unit 7 instructs the imaging unit 5 to continuously capture an image of the area including the predetermined position P1 (step S4).
[0038]
According to the guidance message, the user 10 moves to a position where sound can be heard, that is, the predetermined position P1, so that appropriate guidance is performed.
[0039]
Next, a detection method for detecting how the guidance device 1 has moved the user 10 to the predetermined position P1 will be described.
[0040]
The output from the imaging unit 5 is sent to the subject determination unit 8, and when the presence of an eye image is detected by the subject determination unit 8 (step S5), the control unit 7 moves the user 10 to a predetermined position P1. Considered as induced. Then, the application execution unit 9 is instructed to execute the application (step S6). The eye image captured by the imaging unit 5 is sent to the application execution unit 9 via the subject determination unit 8.
[0041]
In this manner, the user 10 can be guided to a predetermined position using the guidance device 1 described in the present embodiment, and the eye image can be taken.
[0042]
According to the guidance device 1 of the present embodiment, since sound waves are used as guidance means, it is possible to guide the user 10 to move to a predetermined position regardless of the effect of the user 10. .
[0043]
Further, according to the guiding device 1 of the present embodiment, the ultrasonic waves generated by the first sound wave generator 2 and the second sound wave generator 3 at the predetermined position P1 where the user 10 is to be guided. Since the user 10 is guided by using a beat sound generated by intersecting and interfering, the user 10 does not hear the sound at a position other than the predetermined position P1, and the distance between the guiding device and the user is different. Guidance can also be performed appropriately.
[0044]
(Second embodiment)
Next, another example of the guidance device of the present invention will be described as a second embodiment. FIG. 3 is a block diagram showing a configuration of the guidance device according to the second embodiment of the present invention.
[0045]
In FIG. 3, for the sake of simplicity, the same components as those of the guidance device 1 shown in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0046]
The guidance device 20 of the present embodiment is different from the guidance device 1 of the first embodiment in the configuration of the first sound wave generator 12 and the second sound wave generator 13.
[0047]
In the guidance device 20 of the present embodiment, each of the first sound wave generator 12 and the second sound wave generator 13 includes two speaker units. The first sound wave generator 12 includes a first speaker unit 14 and a second speaker unit 15, and the second sound wave generator 13 includes a third speaker unit 16 and a fourth speaker unit 17. Have been.
[0048]
When the user 10 is located at a predetermined position P1, the first speaker unit 14 and the second speaker unit 15 constituting the first sound wave generator 12 are located at a position P2 where the right ear 18 is to be arranged. Are arranged at such an angle as to generate an ultrasonic wave of a predetermined frequency toward. On the other hand, when the user 10 is located at the predetermined position P1, the left ear 19 of the third speaker 16 and the fourth speaker 17 constituting the second sound wave generator 13 should be arranged. It is arranged to generate an ultrasonic wave of a predetermined frequency with respect to the position P3. A dashed line in FIG. 3 indicates a traveling direction (hereinafter, referred to as a sound axis) of an ultrasonic wave generated from each speaker unit.
[0049]
Generation of ultrasonic waves from the first speaker unit 14, the second speaker unit 15, the third speaker unit 16, and the fourth speaker unit 17 is controlled by the control unit 7.
[0050]
Further, the frequency of the ultrasonic wave generated from the first speaker unit 14 is F1, the frequency of the ultrasonic wave generated from the second speaker unit 15 is F2, and the frequency of the ultrasonic wave generated from the third speaker unit 16 is F1. Is F3 and the frequency of the ultrasonic wave generated from the fourth speaker unit 17 is F4, the absolute value of the difference between F1 and F2 and the absolute value of the difference between F3 and F4 are in the audible region, that is, generally, It is configured to have a frequency in the range of 20 Hz to 20 kHz as defined. That is,
| F1-F2 | = S2
| F3-F4 | = S3
Then
20Hz ≦ S2 ≦ 20kHz
20Hz ≦ S3 ≦ 20kHz
It is configured to have the following relationship.
[0051]
With such a configuration, when the right ear 18 is located at the predetermined position P2, the user 10 intersects the ultrasonic waves generated from the first speaker unit 14 and the second speaker unit 15 at the predetermined position P2. When the left ear 19 is located at the predetermined position P3, the ultrasonic waves generated from the third speaker unit 16 and the fourth speaker unit 17 generate a predetermined sound. And interferes at the position P3, so that the beat sound can be heard. That is, by moving both ears to a position where sound can be heard, guidance to a more accurate position can be performed.
[0052]
According to the guidance device 20 of the present embodiment, the first sound wave generator 12 and the second sound wave generator 13 corresponding to the right ear 18 and the left ear 19 of the user 10 are provided, respectively. It is possible to guide the user 10 to a more accurate position as compared with the guide device 1 shown in the embodiment.
[0053]
In the guidance device shown in the first embodiment and the second embodiment of the present invention, the frequency of the beat sound generated by the interference at the position where the ultrasonic waves generated from the loudspeaker intersects the audible range. However, from the viewpoint of practicality, it is possible to most appropriately guide the user by setting the frequency of the beat sound to a frequency of 2 kHz or more and 4 kHz or less, which is high in sensitivity of the human ear. it can.
[0054]
(Third embodiment)
Next, still another example of the guidance device of the present invention will be described as a third embodiment. FIG. 4 is a block diagram illustrating a configuration of the guidance device according to the third embodiment of the present invention.
[0055]
In FIG. 4, to simplify the description, the same components as those of the guidance devices 1 and 20 shown in the first embodiment and the second embodiment are denoted by the same reference numerals, and the description will be omitted. Omitted.
[0056]
The guidance device 30 of the present embodiment is different from the guidance device 1 of the first embodiment in the configuration of the first sound wave generator 21 and the second sound wave generator 22.
[0057]
In the guiding device 30 according to the present embodiment, each of the first sound wave generating unit 21 and the second sound wave generating unit 22 includes two speaker units. It is the same as the device 20. That is, the first sound wave generator 21 includes a first speaker unit 23 and a second speaker unit 24, and the second sound wave generator 22 includes a third speaker unit 25 and a fourth speaker unit 26. It is composed of Different from the guidance devices 1 and 20 shown in the first and second embodiments, each speaker unit generates an audible sound wave (indicating a sound wave whose frequency is 20 Hz or more and 20 kHz or less). .
[0058]
The first speaker unit 23 and the second speaker unit 24 constituting the first sound wave generator 21 are arranged such that axes (sound axes) indicating directions in which sound waves travel from the speaker unit are parallel to each other. It is configured. A line L1 parallel to the sound axis of the first speaker unit 23 and the sound axis of the second speaker unit 24 and passing through the center thereof intersects a position P2 where the right ear 18 of the user 10 is to be arranged. It is arranged to be. On the other hand, the center line L2 between the sound axis of the third speaker unit 25 and the sound axis of the fourth speaker unit 26 constituting the second sound wave generator 22 should be arranged at the left ear 19 of the user 10. It is arranged so as to cross the position P3.
[0059]
Generation of sound waves from the first speaker unit 23, the second speaker unit 24, the third speaker unit 25, and the fourth speaker unit 26 is controlled by the control unit 7.
[0060]
Further, the frequency of the sound wave generated from the first speaker unit 23 is F1, the frequency of the sound wave generated from the second speaker unit 24 is F2, the frequency of the sound wave generated from the third speaker unit 25 is F3, If the frequency of the sound wave generated from the fourth speaker unit 26 is F4,
F1 = F2 = λ1
F3 = F4 = λ2
It is configured so that
[0061]
The distance W1 between the sound axis of the first speaker unit 23 and the sound axis of the second speaker unit 24, the distance between the sound axis of the third speaker unit 25 and the sound axis of the fourth speaker unit 26 W2 is
W1 = (λ1 / 2)
W2 = (λ2 / 2)
It is configured so that When the sound wave to be generated is a sound wave having a frequency that is comfortable to the human body, for example, 2 kHz, the distances W1 and W2 between the speakers may be about 8.5 cm.
[0062]
With such a configuration, the first speaker section 23 and the second speaker section 23 are located on the center line L1 between the sound axis of the first speaker section 23 and the sound axis of the second speaker section 24 due to sound interference. Cannot be heard from the speaker section 24 of FIG. Further, at a location on the center line L2 between the sound axis of the third speaker section 25 and the sound axis of the fourth speaker section 26, the third speaker section 25 and the fourth speaker section 26 I can't hear audio from. In other areas, the user 10 can hear the sound generated from each speaker unit.
[0063]
In other words, the user 10 can be guided to a position where the right ear 18 and the left ear 19 cannot hear the sound from each speaker unit, so that more accurate guidance can be performed.
[0064]
As described above, the first sound wave generator 21 and the second sound wave generator 22 corresponding to the right ear 18 and the left ear 19 of the user 10 are also provided by the guidance device 30 of the present embodiment. It is possible to guide the user 10 to a more accurate position as compared with the guide device 1 shown in the first embodiment.
[0065]
In addition, in the embodiment of the present invention, the configuration in which the guidance device guides the user in the X direction and the Z direction in each drawing is shown. In the Y-axis direction, since there is no parallax between the left and right eyes, it is possible to perform guidance by a configuration using a conventional mirror, but by using the guidance device of the present invention, the guidance device can be moved in the Y-axis direction. It is also possible to move or rotate to adjust to eye level.
[0066]
In the embodiment of the present invention, the application executing unit 9 cuts out image information of an iris portion from an eye image captured by the imaging unit 5 and codes the extracted image information by a known method. Based on this, if the user 10 is configured to be authenticated, an iris authentication device can be configured.
[0067]
Furthermore, the guiding device of the present invention is not only an authentication device including an iris, a retina, an auricle, a face, and the like, but also a device that needs to guide a user's eye as a subject to a predetermined position, for example, a lenticular lens. It is needless to say that the present invention may be used for a three-dimensional (three-dimensional) display device or the like using the same.
[0068]
In the guidance device according to the embodiment of the present invention, the subject is guided to a predetermined position by using an acoustic interference phenomenon generated by a phase difference of sound waves or a frequency difference of sound waves generated from each of the plurality of sound sources. A line connecting the plurality of sound wave generators, and an imaging unit arranged between the plurality of sound wave generators and capturing an eye image of the person to be authenticated, is a line connecting the plurality of sound wave generators when viewed from the person to be authenticated. Although the configuration is shown to be at least partially overlapped with, for example, in a configuration used for a three-dimensional display device, a line connecting a plurality of sound wave generators, and a display unit that displays a three-dimensional image is partially They are arranged to overlap.
[0069]
With such a configuration, the size of the device can be reduced, and the height of the eyes or ears of the person to be authenticated or the observer of the three-dimensional display is not changed even when the position is moved. Thus, the person to be authenticated or the observer can be efficiently guided to a predetermined position.
[0070]
【The invention's effect】
As described above, according to the guiding device of the present invention, since the user is guided using sound waves, the positional relationship between the imaging device of the authentication device and the user is determined in the distance direction and the width. Guidance can be appropriately provided so as to be arranged at a predetermined position in the direction regardless of the effect.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a guidance device according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing operation steps of the guidance device according to the first embodiment of the present invention;
FIG. 3 is a block diagram showing a configuration of a guidance device according to a second embodiment of the present invention.
FIG. 4 is a block diagram showing a configuration of a guidance device according to a third embodiment of the present invention.
FIG. 5 is a schematic diagram showing a configuration of a conventional guidance device.
[Explanation of symbols]
1,20,30 Guidance device
2,12,21 First sound wave generator
3,13,22 Second sound wave generator
4 Sensor section
5 Imaging unit
6 Optical system
7 control section
8 Subject judgment unit
9 Application execution unit
10 Users
14, 23 First speaker section
15, 24 second speaker unit
16, 25 Third speaker unit
17, 26 Fourth speaker unit
18 Right ear
19 Left ear

Claims (9)

An imaging unit that captures an image,
A first sound wave generator that generates ultrasonic waves in a direction of a predetermined position within the angle of view of the imaging unit;
A second sound wave generator provided at a position different from the first sound wave generator, which generates an ultrasonic wave in the direction of the predetermined position,
A subject determination unit that determines whether or not a subject is present from the image captured by the imaging unit and outputs a corresponding signal;
A control unit that controls the generation of ultrasonic waves from the first sound wave generator and the second sound wave generator, and the imaging of the imaging unit, and receives the signal output from the subject determination unit. Prepare,
The control unit issues an instruction to generate an ultrasonic wave to the first sound wave generation unit and the second sound wave generation unit and an instruction to shoot an image to the imaging unit. A guiding device that determines that the subject is guided to the predetermined position when it is determined that the subject is present in,
When the frequency of the ultrasonic wave generated from the first sound wave generator is f1 and the frequency of the ultrasonic wave generated from the second sound wave generator is f2, the difference between f1 and f2 becomes an audible frequency. An induction device, characterized in that it is provided. A first speaker unit and a second speaker unit, which are arranged at different positions and generate ultrasonic waves in the direction of the position where the right ear of the user to be guided is to be arranged;
A third speaker unit and a fourth speaker unit arranged at different positions, which generate ultrasonic waves in the direction of the position where the left ear of the user to be guided is to be arranged;
An imaging unit that captures an image of a subject between the position where the right ear is to be arranged and the position where the left ear is to be arranged,
A subject determination unit that determines the presence or absence of a subject from an image captured by the imaging unit;
The first speaker section, the second speaker section, the third speaker section and the fourth speaker section control the generation of ultrasonic waves and the imaging section, and control the imaging of the imaging section. A control unit for receiving a signal,
The control unit performs an instruction to generate ultrasonic waves for the first speaker unit, the second speaker unit, the third speaker unit, and the fourth speaker unit, and captures an image for the imaging unit. A guidance device for performing an instruction to perform, and determining that the subject has been guided to the predetermined position when it is determined that the subject is present in the subject determination unit,
The frequency of the ultrasonic wave generated from the first speaker unit is F1, the frequency of the ultrasonic wave generated from the second speaker unit is F2, and the frequency of the ultrasonic wave generated from the third speaker unit Is defined as F3 and the frequency of the ultrasonic wave generated from the fourth speaker unit is defined as F4, and the difference between F1 and F2 and the difference between F3 and F4 are both in the audible frequency. apparatus. The guidance device according to claim 1, wherein the audible frequency is not less than 20 Hz and not more than 20 kHz. A first speaker unit and a second speaker unit that are arranged at mutually different positions and generate sound waves having the same frequency in directions parallel to each other;
A third speaker unit and a fourth speaker unit that are arranged at different positions and generate sound waves of mutually equal frequencies in directions parallel to each other;
An imaging unit that captures an image of a subject between the position where the right ear of the user is to be arranged and the position where the left ear of the user is to be arranged,
A subject determination unit that determines the presence or absence of a subject from an image captured by the imaging unit;
It controls the generation of sound waves from the first speaker unit, the second speaker unit, the third speaker unit, and the fourth speaker unit, and the photographing of the imaging unit. A control unit for receiving a signal,
The control unit has an instruction to generate sound waves for the first speaker unit, the second speaker unit, the third speaker unit, and the fourth speaker unit, and an instruction to perform imaging for the imaging unit. Performing, when the subject determination unit determines that the subject is present, a guiding device that determines that the subject has been guided to the predetermined position,
A center line of a sound axis of the first speaker unit and the second speaker unit intersects a position where the right ear is to be arranged, and
A center line of a sound axis of the third speaker unit and the fourth speaker unit intersects a position where the left ear is to be arranged;
A distance between the first speaker unit and the second speaker unit is one half of a wavelength of a sound wave generated from the first speaker unit and the second speaker unit; and A distance between the third speaker unit and the fourth speaker unit is one half of a wavelength of a sound wave generated from the third speaker unit and the fourth speaker unit. And guidance device. The frequency of a sound wave generated from the first speaker unit, the second speaker unit, the third speaker unit, and the fourth speaker unit is 20 Hz or more and 20 kHz or less. The guidance device according to claim 1. A plurality of sound wave generators for guiding a person to be authenticated to a predetermined position by using an acoustic interference phenomenon generated by a frequency difference of sound waves generated from each of the plurality of sound sources, and the plurality of sound wave generators are arranged between the plurality of sound wave generators. An imaging unit that captures an eye image of the person to be authenticated, wherein the imaging unit is arranged so as to at least partially overlap a line connecting the plurality of sound wave generators when viewed from the person to be authenticated. A guidance device characterized by the above-mentioned. A plurality of sound wave generators for guiding an observer to a predetermined position by using an acoustic interference phenomenon generated by a frequency difference of sound waves generated from each of the plurality of sound sources; and the plurality of sound wave generators arranged between the plurality of sound wave generators for the observation. A display unit for presenting a three-dimensional image to an observer, wherein the display unit is arranged so as to at least partially overlap a line connecting the plurality of sound wave generators when viewed from the observer. And guidance device. A plurality of sound wave generators for guiding a person to be authenticated to a predetermined position using an acoustic interference phenomenon generated by a phase difference of sound waves generated from each of the plurality of sound sources, and the plurality of sound wave generators are arranged between the plurality of sound wave generators. An imaging unit that captures an eye image of the person to be authenticated, wherein the imaging unit is arranged so as to at least partially overlap a line connecting the plurality of sound wave generators when viewed from the person to be authenticated. A guidance device characterized by the above-mentioned. A plurality of sound wave generators for guiding an observer to a predetermined position by using an acoustic interference phenomenon generated by a phase difference of sound waves generated from each of the plurality of sound sources; and the plurality of sound wave generators arranged between the plurality of sound wave generators for the observation. A display unit for presenting a three-dimensional image to an observer, wherein the display unit is arranged so as to at least partially overlap a line connecting the plurality of sound wave generators when viewed from the observer. And guidance device.

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