JP3504177B2 - Photographing device and iris image input device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generates a code capable of personal recognition from an image (hereinafter, referred to as an iris image) in which a pattern of iris in a human or animal eye is clearly reflected to generate personal recognition. The present invention relates to a photographing device, an iris image input device and an iris image input method.

[0002]

2. Description of the Related Art Conventionally, an iris image input device has been installed on a table so that the photographing position is at a predetermined height. A person whose iris is photographed, that is, a person who wants to confirm whether or not he / she is the person by personal recognition (hereinafter referred to as a person to be identified) moves his / her head so that his / her eyes are within the photographing range of the apparatus. The camera inside the device acquires an iris image of the person to be identified when an eye enters the shooting range. The acquired iris image is converted into a code (hereinafter referred to as an iris code) that can be recognized by an individual by an iris patterning program and registered in the storage means, or an iris code already registered in the storage means. Is used to confirm whether or not the person to be identified is who he or she is.

[0003]

However, in the conventional iris image input device, the device is fixed at a predetermined height. Therefore, when photographing the iris, the person to be identified, who is tall, needs to bend his or her waist greatly in order to face the front of the device. In addition, the person to be identified who is short is
You must bend over or sit on a table to turn your face to the front of the device. In such a case, since the person to be identified needs to move his / her posture many times, it takes a long time to complete the photographing.

Further, even when the same person to be discriminated repeatedly photographs an iris, the posture of the person to be discriminated may differ each time the photograph is taken. In such a case, even the person to be identified, who was able to be confirmed as the person in the past, may not be able to be confirmed as the person himself.

The present invention is a photographing device, an iris image input device, and an iris image input method that are easy to operate regardless of the height of the person to be identified and can quickly and accurately obtain the iris code of the person to be identified. The purpose is to provide.

In order to achieve the above object, the present invention is configured such that the person to be identified himself / herself holds a photographing device with his / her own hand to acquire an iris image of himself / herself. Then, the photographing apparatus, the iris image input apparatus, and the iris image input method of the present invention have a shape most suitable for such a form.

[0007]

In order to solve the above-mentioned problems, a first invention is a portable photographing apparatus for acquiring an iris image, and an illumination means for irradiating the iris and an image are provided in the apparatus. The shooting hole to be taken in is provided on the surface facing the iris of the subject at the time of shooting, and is integrally provided with the pointing device and the surface facing the iris of the subject at the time of shooting, and the brightness of ambient light is set. And a power supply control unit for controlling the lighting means to be turned off by the output of the illumination detection sensor when the illumination detection sensor does not detect the brightness. And In the photographing apparatus having such a configuration, the illumination detection sensor detects the brightness when used as the photographing apparatus, and the illumination detection sensor does not detect the brightness when used as the pointing device.

A second aspect of the invention is directed to a photographing device according to the first aspect of the invention, a recognition device for registering or collating information about an iris based on an iris image acquired by the photographing device, and an iris acquired by the photographing device. It is characterized in that an iris image input device is constituted by a monitor displaying an image.

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. The elements common to the drawings are given the same reference numerals. In addition, various embodiments described below can be combined with a part of the configurations described in other embodiments. The present invention includes an embodiment in which some of such configurations are combined.

(First Embodiment) First, the first embodiment will be described. FIG. 1 is a block diagram of an iris image input device according to the first embodiment. The photographing device 3 for photographing the iris 7 is connected by a cable 6 to a personal computer (hereinafter, referred to as a recognizing device) 1 that generates an iris code from an iris image and performs individual recognition. The person to be identified 8 holds the movable handy type photographing device 3 with his / her hand 9 and brings the photographing hole 4 of the photographing device 3 close to one eye 10 for registering or collating the iris 7 for photographing. At this time, the illumination unit 13 described later irradiates the iris with light so that a good iris image can be captured. Further, the person to be identified 8 confirms the image of the iris 7 displayed on the monitor 2 with the other eye 11, and the photographing device 3
The switch 5 is pressed to perform registration or verification operation.
The switch 5 is provided on the back surface of the surface where the photographing hole 4 is provided so that the person to be identified 8 can easily press it.
Further, W in the drawing indicates that the center of the photographing hole 4 is located at equal positions from the left and right of the surface facing the iris at the time of photographing.

By the way, the photographing device 3 is for photographing the iris. Therefore, the following measures are desired. Since the person to be identified 8 may be a person with acrophobia in the imaging device 3, the person to be identified 8 does not have a protrusion so as not to give fear to the person to be identified 8. Is desired. Therefore, it is desirable that the surface of the imaging device 3 that faces the iris during imaging (that is, the surface on which the imaging hole 4 and the illumination unit 13 are provided) is a flat surface. For the same reason, the flat surface is preferably circular or elliptical so that it has no corners. Further, in the photographing device 3, it is desirable that the photographing holes 4 are provided at equal positions from the left and right of the plane for the following two reasons.
That is, the first reason is that in order to increase the degree of freedom in the design of the image capturing apparatus 3, the largest component (main board 14) in the image capturing apparatus 3 can be the largest space in the image capturing apparatus 3. This is because it is arranged in a space near the center of the image capturing device 3. The second reason is that the person to be identified 8
This is because the photographing hole 4 is positioned in the center of the width of the photographing device 3 so that the photographing hole 4 can be easily directed to the iris of the photographer. This means that if the photographing hole 4 is positioned at the center of the width of the photographing device 3, the photographing hole 4 will be positioned at the center of the palm of the person to be photographed 8 during photographing,
The person to be identified 8 grasps the photographing device 3 with his / her own hand and photographs his / her iris, so that it becomes easy to intuitively align the photographing hole 4 and his / her iris. Therefore, the person to be identified 8 can easily take an appropriate iris image of himself. Further, in the image capturing apparatus 3, as the position of the image capturing hole 4 becomes closer to the palm, the person to be identified 8 can easily sense the position of the image capturing hole 4 and the position of its own iris.
It is desirable that the upper and lower parts are also provided at equal positions.

Further, in FIG. 1, the cable 6 is on the lower side of the photographing device 3 (the position on the lower side when the iris image is obtained).
It has been drawn from. In this way, the cable 6 is pulled out from the lower side of the image capturing device 3 for the following two reasons. That is, the first reason is that when the cable 6 is pulled out from the upper side of the image capturing apparatus 3, the cable 6 hangs unstablely from the upper side to the lower side, so that the person to be identified 8 tries to freely move the image capturing apparatus 3. This will prevent you from doing so. A second reason is that if the cable 6 is pulled out from the upper side of the image capturing device 3, the cable 6 may block the top of the image capturing hole 4, and the image capturing device 3 may not be able to obtain a good iris image. Because.

FIG. 2 is a detailed view showing the structure of the image pickup apparatus shown in FIG. The image pickup device 3 has a main board 14 in which a camera unit 12 and a lighting unit 13 are fixed. On the main board 14, a lower case 15 has board fixing screws 16a, 16
The upper case 17 is attached by the main board 1
4 to the lower case 15 so as to cover 4
It is attached by a and 18b.

A switch 5 is provided on the upper case 17, and the switch 5 is connected to the wiring pattern of the main board 14 by a code line 19. A protective glass 20 is attached to the photographing hole 4 of the lower case 15 with glass fixing screws 21 and 21.

A camera case 22 is provided on one surface 14a of the main board 14, and a camera section 12 and an illuminating section 13 are provided in the camera case 22. The illumination optical axis 24 has an intersection angle θ with the camera optical axis 23. A visible light cut glass 25 provided in the camera unit 12 and a diffusion glass 26 provided in the illumination unit 13 are fitted in the camera case 22.

A lens mount 27 and a CCD substrate 28 are attached to the other surface 14b of the main substrate 14 by screws (not shown). The lens mount 27 presses the step surface 27a against the other surface 14b of the main substrate 14 to project into the camera case 22, and the lens portion 31 into which the lens 30 for converging the light entering the device is fitted. Divided into

The main body portion 29 has a through hole 29a along the optical axis 23 of the camera, and the lens portion 31 is formed on the inner surface of the through hole 29a.
A female screw 29b is provided so as to mesh with a male screw 31a provided on the outer peripheral surface of the. A CCD sensor 32 that converts light into an electric signal is mounted on the CCD substrate 28. The CCD sensor 32 has a through hole 2 in the lens mount 27.
It faces the lens 30 through the through hole of the lens portion 31 and the lens portion 31.

The focal length of the lens 30 is fixed to a certain value within 0.5 to 50 cm from the photographing hole 4. The minimum focal length of the lens 30 is about 0.5 cm so that the eye 10 and its eyelashes do not come into contact with the photographing hole 4. This is because when the eye 10 or its eyelashes come into contact with the imaging device 3, foreign matter may adhere to the eye 10, its eyelashes, or the imaging device 3, which makes the person to be identified 8 disliked and is desirable in hygiene. Because there is no. Furthermore, this is because the person to be identified 8 may be injured if someone pushes the person to be identified 8 or the image capturing apparatus 3 while the eyes 10 or the eyelashes thereof are in contact with the image capturing apparatus 3. The focal length of the lens 30 is set to about 50 cm at maximum because the range in which the person to be identified 8 can freely move with the hand 9 is taken into consideration.

The focal length of the lens 30 depends on the person to be identified 8.
Considering that the person may wear glasses, and that someone may push the person to be identified 8 or the photographing apparatus 3, it is preferable that the distance be at least about 2 cm. Further, considering that the lens 30 may be operated by a woman or a child, it is desirable that the maximum focal length be about 20 cm. The maximum focal length of the lens 30 is about 20c, considering that the iris image displayed on the monitor 2 is viewed by the other eye 11 without being aware that the imaging device 3 is shooting the eye 10.
It is desirable to set m. This is because if the image capturing device 3 enters the field of view of both eyes, the line of sight of the person to be identified 8 moves between the image capturing device 3 and the monitor 2, and the position of the iris changes, so that an appropriate iris image is obtained. This is because you will not be able to obtain it. In other words, in order to obtain a proper iris image, it is necessary to keep the position of the iris unchanged, and in order to do so, it is necessary for the left and right eyes to be able to see different objects without being conscious of it. is there. In the case where the left and right eyes can view different objects without being conscious of each other, the field of view is within about 10 to 20 degrees from the center of one eye to the left and right. For this reason, the person to be identified 8 looks at the imaging device 3 with the eye 1.
It is difficult to obtain a proper iris image unless the iris is photographed so as not to enter the field of view within about 10 to 20 degrees from 1 to the left and right. Approximately 10 from eye 11 to the left and right
The invisible distance within 20 degrees is a distance within about 20 cm from the eye 10. Therefore, it is desirable for the person to be identified 8 to photograph the photographing device 3 within a distance of about 20 cm from the eye 10, and therefore the focal length of the lens 30 is fixed and set to a certain value within about 20 cm from the photographing hole 4. Is desirable. The focal length of the lens 30 is specified by the refractive index, shape, and thickness of the material.

By the way, in the photographing apparatus 3, the lens 30 can be configured to be movable so that it can be auto-focused. However, it is desirable that the imaging device 3 be as light, thin and compact as possible so that the person to be identified 8 can easily operate it. Moreover, it is also desired that the photographing device 3 be as inexpensive as possible. In order to achieve these objectives, it is necessary to eliminate an extra configuration from the image capturing device 3 as much as possible. Therefore, in the present embodiment, the imaging device 3 has a configuration in which the lens 30 is fixed. Further, the photographing device 3 does not have a power supply unit itself, and power is supplied from the recognition device 1.

The lighting unit 13 has three light emitting elements (LEDs).
Illumination pedestal 34 to which 33a, 33b, 33c are attached
Are fixedly formed on one surface 14a of the main substrate 14. In FIG. 2, 33c is hidden behind 33a and is not shown.

The illuminating unit 13 irradiates the face of the person to be identified 8 in the illumination line 35 through the diffusion glass 26 with light so that the photographing device 3 can photograph a clear iris image.
Here, the distance L between the imaging device 3 and the iris 7 is about 2. In consideration of the shape of the face of the person to be identified 8 to be input, the person 8 to be identified may wear glasses, and the like. It should be 0 cm or more. Intersection angle θ between the camera optical axis 23 and the illumination optical axis 24
Is a condition that the variation of the illumination intensity within the shooting range is 10% or less, that the reflection point of the illumination reflected in the eyes is not on the iris 7, and that the reflection point of the illumination reflected by the glasses is not on the iris 7. Set to meet.

In the present invention, the diffusion glass 26 is arranged on the upper surfaces of the light emitting elements 33a to 33c so that the variation of the illumination intensity within the range that can be photographed by the camera section 12 of the photographing device 3 is within 10%. The emission wavelength range of the light emitting elements 33a to 33c is near infrared light having a predetermined wavelength so that the iris 7 becomes bright when reflected by the iris 7. In addition, the illumination intensity of the light emitting elements 33a to 33c is set to a predetermined illumination intensity or less in consideration of safety to the eyes. Although the number of light emitting elements is three in the present embodiment, the number can be changed as long as the variation of the illumination intensity within the range that can be photographed by the camera unit 12 of the photographing device 3 is within 10%. Is.

FIG. 3 is a system block diagram of the iris image input device shown in FIG. The recognition device 1 includes a central processing unit 35 (hereinafter referred to as CPU 35), a memory 36, a power supply unit 37, an interface unit 38, an image input unit 39, a camera driver 40, and a lighting driver 41. Power supply 3
Reference numeral 7 supplies power to the entire device.

The CPU 35 is connected to the image input section 39 by a signal line 42, and further connected to the monitor 2 and the CCD sensor 32 of the camera 12 by a signal line 43. The CPU 35 is connected to the camera driver 40 and the illumination driver 41 by signal lines 44 and 46, respectively, and further, the CCD sensor 32 and the illumination unit 13 are connected by signal lines 45 and 47.
Respectively connected to. Further, the CPU 35 is connected to the switch 5 and the interface section 38 of the photographing device 3 by signal lines 48 and 49, respectively, and is connected to the memory 36 by a bus line 50.

Iris 7 incident through the lens unit 31
The reflected light from is imaged on the CCD element surface of the CCD sensor 32. The iris image is converted into a voltage proportional to the contrast by the CCD element and sent as a video signal to the image input section 39 through the signal line 43. The video signal at this time is also sent to the monitor 2 and displayed on the monitor 2 as an iris image as shown in FIG.

The CPU 35 converts the video signal of the iris image input to the image input unit 39 into a code that can be recognized by an individual by an iris patterning program stored in advance in the memory 36. Then, in the case of the iris registration processing, the photographed code is stored in the memory 36, and in the case of the iris collation processing, the code registered in advance in the memory 36 is read out and compared and collated with the newly photographed code. To do.

Further, the CPU 35 controls the camera driver 40 to change the image gain (gain) of the CCD sensor 32 and the shutter speed value so that a high quality image can be received during the iris patterning process. When the light amount is insufficient, the light driver 41 is controlled to increase the light amount of the light emitting element 33 in the lighting unit 13.

FIG. 4 is a flow chart for explaining the operation of the first embodiment. When a power switch (not shown) of the recognition device 1 is turned on, power is supplied from the power supply unit 37 to the entire device, and the system starts up. afterwards,
As shown in FIG. 1, the person to be identified 8 holds the photographing device 3 with his / her hand 9 and brings an eye 10 for registering an iris or collating the iris close to the photographing hole 4 of the photographing device 3. In this embodiment, the case where the iris 7 of the right eye is registered is shown.

In step S1, the CPU 35 causes the monitor 2 to display a selection screen for selecting either "register iris" or "verify iris". At this time, on the selection screen, it is indicated that the switch 5 on the photographing apparatus 3 is pressed once when selecting “register iris” and the switch 5 is pressed twice when selecting “match iris”. A message is displayed. The person to be identified 8 who has seen the message presses the switch 5 on the photographing apparatus 3 once or twice.

In step S2, the CPU 35 detects whether or not the switch 5 has been pressed, and detects the number of times the switch 5 has been pressed.

In step S3, the CPU 35 stores the number of times the switch 5 has been pressed in the memory 36. At this time, the photographing device 3 continues to photograph the iris images of the eyes 10 of the person to be identified 8 at predetermined intervals, and sequentially outputs the photographed iris images to the recognition device 1. The CPU 35 of the recognition device 1 sequentially stores the iris images output from the photographing device 3 in the memory 36. The memory 36 has a capacity capable of storing a plurality of frames of iris images, and sequentially stores the iris images output from the photographing device 3. And memory 3
When the data is stored up to the full capacity, 6 erases the old iris image and stores a new iris image. Further, the CPU 35 of the recognition device 1 causes the monitor 2 to display the iris image output from the photographing device 3. The person to be identified 8 shoots the iris image of the right eye projected on the monitor 2 with the other eye (that is, the left eye) 11 while taking a picture so that the iris image is in focus (the pattern of the iris 7 is clear). Move device 3 back and forth. The person to be identified 8 adjusts the focus of the iris image in this way, and presses the switch 5 when the image is in focus. At this time, since the person to be identified 8 presses the switch 5 himself, he / she can know when the photographing device 3 is photographing the iris. Therefore, the person to be identified 8 can regulate his / her own movement so as not to move at the moment of pressing the switch 5. As a result, the iris image input device of the present invention can acquire a good image in which the iris is still still.

In step S4, the CPU 35 detects whether or not the switch 5 has been pressed, and detects that the switch 5 has been pressed.

In step S5, the CPU 35 causes the switch 5
When it is detected that is pressed, after the iris image of a predetermined number of frames is continuously stored in the memory 36,
An iris image of a plurality of frames stored in the memory 36 is extracted from an iris image satisfying a condition for use in registration or matching, and the extracted iris image is converted into signal data which can be recognized by an individual and stored in the memory 36.

There are the following three conditions, for example. The first condition is that the iris image is within the shooting frame. The second condition is that the iris image is larger than a predetermined size with respect to the frame. The third condition is that the shadow of eyelashes and the reflection of illumination are smaller than a predetermined size in the iris area.

The first condition is that the iris image protruding from the frame cannot extract a small amount of characteristic information of the individual and thus cannot be recognized by the individual, and is set to eliminate such an iris image. ing. The second condition is that an iris image having a size smaller than a predetermined size with respect to a frame is unclear, so that characteristic information of an individual may be erroneously extracted, and such an iris image is excluded. Is set for. The third condition is that an iris image in which the shadows of eyelashes and the reflection of illumination are larger than a predetermined size in the iris area cannot extract a small amount of characteristic information of an individual, and thus cannot identify the individual. It is set to eliminate such iris images.

In step S6, the CPU 35 refers to the number of times the switch is pressed in step S3 stored in the memory 36, and determines whether the process is "register iris" or "verify iris". . If the process is "register iris", the step proceeds to step S7, and if the process is "verify iris", the step proceeds to step S8.

In step S7, the CPU 35 causes the monitor 2 to display the registered message and ends the processing.

In step S8, the CPU 35 reads the iris pattern data registered in advance from the memory,
Match with the iris pattern data acquired this time.

In step S9, the CPU 35 causes the monitor 2 to display a message indicating the determination result of the collation process and ends the process.

By the way, in the above steps, the photographing device 3 sequentially outputs the iris images acquired at predetermined intervals to the recognition device 1, and the recognition device 1 sequentially stores the iris images output from the photographing device 3 in the memory 36. Keeps on doing. When the recognition device 1 detects that the switch 5 has been pressed, the recognition device 1 continues to store a predetermined number of frames of iris images in the memory 36, and then registers or selects from among the plurality of frames of iris images stored in the memory 36. Those that satisfy the conditions for use in matching are extracted, converted into signal data that can be personally recognized, and stored in the memory 36. In the present embodiment, the iris image input device is configured to operate in this manner, so that the imaging device 3
The extra configuration has been eliminated from. That is, the photographing device 3
Has no function of processing an iris image, but has only a function of outputting an iris image to the recognition device 1. Therefore, the photographing device 3 has a lightweight, thin, and compact configuration, and a maker can make the photographing device 3 at low cost.

The criterion of the determination result of the collation process is determined by the high security required for this device. Security is high when it comes to money and personal privacy. In such a case, it is desirable to extract and register as much feature data of the captured iris image as possible. This is because the recognition accuracy is improved accordingly. However, if this is done, the amount of processing will increase accordingly, and it will take time to complete the collation determination. It is necessary to set the criterion of the determination result of the matching process in consideration of the balance between the importance of recognition accuracy and the importance of time.

According to the first embodiment, the iris image input device of the present invention includes a photographing device for photographing an iris image that can be carried by one hand and obtaining an iris image, and an iris image obtained by the photographing device. A recognition device for registering or collating information about the iris based on the above, and a switch for instructing the recognition device to start registration or collation,
The photographing device includes a grip portion that is sized to fit in the palm of the hand and is held by an iris photographer, and is provided on a surface facing the iris at the time of photographing, the illuminating means for illuminating the iris, and the photographing hole for taking the light into the device. And a CCD element provided inside, which converges light that has entered the apparatus through the photographing hole and a CCD element that converts the light converged by the lens into an electric signal, and the focus of the lens is It is fixedly set to a certain value within 0.5 to 50 cm from the photographing hole. The person to be identified can adjust the distance between the photographing device and the eyes so that the iris image is in focus. Therefore, the iris image input device of the present invention is
Regardless of the height of the person to be identified, the operation is easy, and the code of the iris pattern of the person to be identified can be acquired quickly and accurately.

(Second Embodiment) Next, a second embodiment will be described. In the second embodiment, whether the iris image is converted into a geometric pattern indicating how the iris appears and is displayed on the monitor, or the portion indicated by the geometric pattern is in focus is displayed. It was dyed with a color indicating whether or not it was displayed on the monitor, or a message indicating the condition of the eyes was displayed on the monitor.

FIG. 5 is a diagram showing correspondence between eye images and geometric patterns. Of the eye images shown on the left side of FIG. 5,
(A) shows the most ideal state where the eyes are wide open, and the iris 7 looks almost circular. (B) shows a state in which the eyes are narrowed or the eyes of a person with narrow eyes are shown.
Compared to (A), Iris 7 is slightly hidden by the upper and lower eyelids. (C) shows a state in which the eye wear is used, and the iris 7 is largely hidden by the upper eyelid.

The conversion from the image on the left side of FIG. 5 to the image on the right side is performed as follows. That is, first the CPU
Reference numeral 35 identifies the position of the black eye portion 51 (the portion including the iris 7 and the pupil 52) from the image on the left side (the image of the photographed eye). Since the black eye portion 51 has the darkest luminance in the image, the CPU 35 can specify the position of the black eye portion 51 by searching for the place where the luminance is the darkest in the image. Next, the CPU 35 obtains the contour of the black eye portion 51. Since the black eye portion 51 has a large luminance difference from the surrounding white eye portion 53, the CPU 35 can obtain the contour of the black eye portion 51 by searching for a portion having a large luminance difference. As shown on the left side of FIGS. 5A to 5C, the CPU 35 determines the outline of the black eye portion 51 as a circle 54 and an ellipse 5.
5. Convert it into a geometric pattern such as a flat ellipse 56 and display it on the monitor 2.

The person to be identified 8 can know from the geometric pattern shown on the monitor 2 what the condition of the photographed eye is. Therefore, the person to be identified 8 can operate so that the eyes are in an ideal state. In this way, the iris image input device of the present invention is used by the person to be identified 8.
You can call attention to how to open your eyes.

Further, in the iris image input device of the present invention, when the iris image is in focus, the portion indicated by the geometric pattern is displayed, for example, by being dyed in green or blue, and the iris image is in focus. If not, the part indicated by the geometric pattern is dyed and displayed in red. As shown in FIG. 2, whether or not the iris image is in focus is determined by determining whether the iris 7 is at a position where the illumination optical axis 24 and the camera optical axis 23 intersect.
It depends on whether or not there is. Whether or not the iris 7 is located at a position where the illumination optical axis 24 and the camera optical axis 23 intersect is determined because the contrast of the image captured by the camera unit 12 is proportional to the output voltage of the CCD sensor 32. It can be determined by detecting the voltage. Note that the camera lens has a certain depth of field. The depth of field refers to a range of image formation positions of a captured image, which are considered to be in focus of the image. The CCD sensor 32 outputs a voltage of the same value if the imaged position of the captured image is within the depth of field. Therefore, although it depends on the focal length of the lens 30, even if the iris 7 is not at the position where the illumination optical axis 24 and the camera optical axis 23 intersect, but in the vicinity thereof, the captured image is formed. If the position is within the depth of field, the iris image is considered to be in focus. The CPU 35 obtains the contrast of the iris image that changes according to the distance between the photographing device 3 and the photographed eye 10, and determines that the iris image is in focus when the contrast value exceeds a certain reference value.

FIG. 6 is a table in which geometric patterns, eye states, and instructions to the person to be identified are associated and stored in the memory 36. The CPU 35 reads the state of the eyes and instructions to the person to be identified from the memory 36 and displays them on the monitor 2 according to the geometric pattern of the photographed eye 10. At this time, the CPU 35 dyes and displays the portion indicated by the geometric pattern in the above-mentioned color in order to inform whether or not the focus is achieved.

According to the second embodiment, since the iris image is shown by the geometric pattern, even a person who feels physiological dislike for the iris image can take the iris image without causing such emotions. can do. Further, since the state of the eyes is displayed on the monitor as a message, even a beginner can operate so as to obtain an ideal iris image. Further, since the iris image of the geometric pattern is displayed by being dyed with a color that indicates whether or not the iris of the person to be identified is located near the focal point of the camera, the person to be identified easily knows the timing of pressing the switch. be able to.

(Third Embodiment) Next, a third embodiment will be described. In the third embodiment, the operation panel is displayed as an icon on the monitor 2, and a mark that moves in association with the movement of the person 8 to be identified is displayed on the monitor 2.

The person to be identified 8 can input an instruction by pressing the switch 5 of the photographing apparatus 3 twice when the mark comes to the position of the target icon. The mechanism for moving the mark in this embodiment is as follows. That is, the CPU 35 detects the movement direction and the movement amount of the eye 10 by utilizing the fact that the eye 10 moves in conjunction with the movement of the eye 11, and according to the detected movement direction and the movement amount of the eye 10. The mark on the screen of the monitor 2 is moved.

FIG. 7 is a monitor screen showing the operation panel of the third embodiment. (A) is the screen 2a at the time of system activation, and an icon 56 indicating that the system is being activated is displayed. (B) is a screen 2b for selecting any of "iris registration processing", "iris matching processing", "stop", and "system termination", and icons 57 to 60 for selecting any one are selected. The mark 61 used for is displayed. (C) is the screen 2c in the iris shooting state, in which an image 62 of the eye being shot and icons 63 to 64 indicating the processing result are displayed. However, the icon 63,
No. 64 is not displayed on the monitor screen during iris shooting and processing, and either one is displayed as the processing result after the processing is completed.

The system block of the iris image input device of the third embodiment is the same as that of the first embodiment except that the recognition device 1 shown in FIG. 3 has a feature detection means and a signal output means (neither shown). It is almost the same as the form. From the image 62 of the eye 10 captured by the camera unit 12, the feature detection means
The biological features other than the white eye portion 53, for example, the pupil 52 is extracted, and the moving direction and the moving amount of the pupil 52 are calculated. The signal output means outputs a signal for moving the mark on the screen of the monitor 2 to the monitor 2 according to the moving direction and the moving amount of the pupil 52.
Output to. These are executed by the CPU 35 based on a control program stored in the memory 36.

FIG. 8 is a diagram showing the position of the pupil extracted from the eye image. Since the pupil 52 is basically the darkest part of the eye, the CPU 35 can easily extract the pupil 52 from the image of the eye. Moreover, since the pupil 52 moves relatively large in the image of the eye, the CPU 35 can easily calculate the moving direction and the moving amount thereof.

FIG. 8A shows an image 6 of the eyes facing the front.
The case where the pupil 52 is extracted from 2 is shown. As shown in the figure, the CPU 35 sets the position of the pupil 52 as the origin and sets X.
The axis 65 and the Y axis 66 are set.

FIG. 8B shows a case where the person to be identified 8 moves his eyes to the left (arrow A), and the pupil 5 after the movement is shown.
The position of 2 is (X1, Y1). The CPU 35 obtains the movement amounts X1 and Y1 from the origin, converts them into the movement amount of the mark 61 on the screen of the monitor 2, and outputs a signal for moving the mark 61 to the monitor 2. As a result, the mark 61 on the screen of the monitor 2 moves toward the target icon. The moving direction is determined by the signs of X1 and Y1.

FIG. 8C shows a case where the person to be identified 8 moves his eyes upward (arrow B), and the position of the pupil after the movement is (X2, Y2).

FIG. 9 is a flow chart for explaining the operation of the third embodiment. When a power switch (not shown) of the recognition device 1 is turned on, power is supplied from the power supply unit 37 to the entire device. Then the system starts up,
A screen 2a shown in FIG. 7A is displayed on the monitor 2.
After that, as shown in FIG.
With the hand 9, the eye 10 (in this embodiment, the right eye) for iris registration or iris matching is brought close to the photographic hole 4 of the photographic device 3.

In step S1, the CPU 35 causes the monitor 2 to display the screen 2b shown in FIG. Person to be identified 8
Sees the icon (eg, iris registration 57) selected with the other eye 11. At this time, the CPU 35 makes the mark 61
Is displayed on the monitor 2 so as to move toward the iris registration 57. The person to be identified 8 presses the switch 5 twice when the mark 61 comes to the iris registration 57.

In step S2, the CPU 35 determines whether the process is "register iris" or "verify iris". Processing is "Register Iris"
In the case of (if the iris registration 57 is selected), the process proceeds to step S3, and the process is "verify iris".
If (the iris matching 58 is selected), the step proceeds to step S7.

In step S3, the photographing device 3 continues photographing the iris images of the eyes 10 of the person to be identified 8 at predetermined intervals, and sequentially outputs the photographed iris images to the recognition device 1. The CPU 35 of the recognition device 1 sequentially stores the iris images output from the photographing device 3 in the memory 36. Memory 36
Has a capacity capable of storing a plurality of iris images, and sequentially stores the iris images output from the photographing device 3. Then, when the memory 36 has been stored to the full capacity, the old iris image is erased and a new iris image is stored. Further, the CPU 35 of the recognition device 1 is shown in FIG.
The screen 2c shown in (C) is displayed on the monitor 2. The person to be identified 8 shoots the iris image of the right eye displayed on the monitor 2 with the other eye (that is, the left eye) 11 so that the iris image is in focus (the pattern of the iris 7 is clear). Move device 3 back and forth. Person to be identified 8
In this way, the focus of the iris image is adjusted in this manner, and when the focus is achieved, the switch 5 is pressed.

In step S4, the CPU 35 detects whether or not the switch 5 has been pressed, and detects that the switch 5 has been pressed.

In step S5, the CPU 35 causes the switch 5
When it is detected that is pressed, the iris image is continuously stored in the memory 36 for a while, and then the condition for registering or matching is satisfied from the iris images of a plurality of frames stored in the memory 36. What is present is extracted, converted into signal data that can be personally recognized, and stored in the memory 36.

In step S6, the CPU 35 displays the icon 63 on the screen of the monitor 2 to inform the person to be identified 8 that the registration has been completed.

In step S7, the photographing device 3 continues photographing the iris images of the eyes 10 of the person to be identified 8 at predetermined intervals, and sequentially outputs the photographed iris images to the recognition device 1. The CPU 35 of the recognition device 1 sequentially stores the iris images output from the photographing device 3 in the memory 36. Memory 36
Has a capacity capable of storing a plurality of iris images, and sequentially stores the iris images output from the photographing device 3. Then, when the memory 36 has been stored to the full capacity, the old iris image is erased and a new iris image is stored. Further, the CPU 35 of the recognition device 1 is shown in FIG.
The screen 2c shown in (C) is displayed on the monitor 2. The person to be identified 8 shoots the iris image of the right eye projected on the monitor 2 with the other eye (that is, the left eye) 11 while taking a picture so that the iris image is in focus (the pattern of the iris 7 is clear). Move device 3 back and forth. Person to be identified 8
In this way, the focus of the iris image is adjusted in this manner, and when the focus is achieved, the switch 5 is pressed.

In step S8, the CPU 35 detects whether or not the switch 5 has been pressed, and detects that the switch 5 has been pressed.

In step S9, the CPU 35 causes the switch 5
When it is detected that is pressed, the iris image is continuously stored in the memory 36 for a while, and then the condition for registering or matching is satisfied from the iris images of a plurality of frames stored in the memory 36. What is present is extracted, converted into signal data that can be personally recognized, and stored in the memory 36.

In step S10, the CPU 35 reads the iris pattern data registered in advance from the memory and compares it with the iris pattern data acquired this time.

In step S11, the CPU 35 causes the monitor 2
The icon 63 or the icon 64 is displayed on the screen to notify the person to be identified 8 of the determination result of the matching process.

When the switch 5 is pressed in steps S4 and S8, iris registration processing or iris matching processing is started. At this time, if the process is not completed, the person to be identified 8 may select the icon 59 or the icon 60 with the mark 61 displayed on the screen 2c to stop the process. If the icon 59 is selected, the screen returns from 2c to 2b, and if the icon 60 is selected, the system ends.

According to the third embodiment, just by looking at the icon displayed on the monitor, the mark moves toward the icon, so that the person to be identified inputs an instruction without taking his eyes off the photographing device. be able to. Therefore, even a beginner can easily operate and input an iris image.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, the person 8 to be identified has a shape that makes it easy for the person to be identified 8 to grip the imaging device and to align the eye position with the imaging hole. The fourth embodiment is provided with a start switch der Ru switch 7 3 for starting the switch 72 and matching iris is a start switch for starting the registration of the iris at the bottom of the monitor 2.

FIG. 10 is a block diagram of an iris image input device according to the fourth embodiment. In FIG. 10, a photographing device 71 that photographs the iris 7 includes a recognition device 1 that performs image processing on an iris pattern to perform personal identification, and a cable 6.
Connected by. The person to be identified 8 holds a movable handy type photographing device 71 with his / her hand 9 and brings the photographing hole 4 of the photographing device 71 close to the eye 10 for registering or checking the iris 7 for photographing. At that time, while confirming the image of the iris 7 displayed on the monitor 2 with the other eye 11, the switch 72 or 73 at the bottom of the monitor 2 is pressed to perform registration or collation operation.

For the same reason as described in the first embodiment, the photographing holes 4 are provided on the plane and at even positions from the left and right sides of the plane. The cable 6 is
For the same reason as described in the first embodiment, the photographing device 7
It is pulled out from the lower side of 1 (the position which becomes the lower side when the iris image is acquired).

11 and 12 are perspective views showing a photographing apparatus according to the fourth embodiment. FIG. 11 shows the rear side of the photographing apparatus and FIG. 12 shows the front side of the photographing apparatus. In both figures, the outer shape of the photographing device 71 is composed of a front cover 74 and a rear cover 75. The front cover 74 and the rear cover 75 are fixed to each other by screws 80. The front cover 74 and the rear cover 75 are used for the photographing unit 7.
6 and the grip portion 77 are formed.

The photographing section 76 is formed in a substantially circular plane shape wider than the grip section 77, and a photographing opening 78 and an illumination opening 79 are provided therein. The shooting port 78 is one end of the shooting hole 4 covered by a half mirror 91 described later.

The grip portion 77 is sized so that it can be gripped with one hand, and the rear cover 75 is formed in a rounded shape. Specifically, the size of the grip portion 77 is such that the radius of the lower curved portion is approximately 10 mm to 30 mm, and the roundness of the rear cover 75 has an inclination angle of approximately 30 degrees to 60 degrees. Further, the grip 77 is
A constricted portion 81 is formed at the boundary with the photographing unit 76.
Since the grip portion 77 has such a shape, the person to be identified 8 brings the palm of the hand into contact with the rounded portion of the rear cover 75 and presses the thumb and forefinger against the constricted portion 81 of the grip portion 77, thereby gripping the grip portion. You can hold 77 firmly.

The reflecting portion 82 is provided for the eyes 10 of the person to be identified 8.
It is made of a color that easily reflects the external light so that the surrounding area becomes bright. Specifically, it has a white or whitish color or a mirror-like color with a reflectance of 50% or more. The reason why the reflecting portion 82 is formed in this way is that the eye 10 of the person to be identified 8 reacts to light, the pupil becomes smaller and the iris becomes larger, so that the iris can be photographed well. is there.

Next, the internal structure of the photographing apparatus will be described. Figure 1
3 is a cutaway perspective view showing the internal structure of the image capturing apparatus according to the fourth embodiment, FIG. 14 is a perspective view showing the internal unit of the image capturing apparatus, and FIG. 15 is a side view showing the inside of the image capturing apparatus. In these figures, the photographing device 71 is a large mirror 8
4, a small mirror 85, a lens unit 86 and a CCD sensor substrate 87, and a camera section 88, and an illumination section 90 composed of six light emitting elements (LEDs) 89.

The large mirror 84 has a half mirror 91 attached to the front side (the side facing the iris), and a front cover 74 attached so that the half mirror 91 and the photographing opening 78 overlap. The half mirror 91, unlike a general half mirror, has a characteristic of reflecting visible light and passing only near infrared light. Therefore, the half mirror 91 reflects visible light among the light emitted from the illumination unit 90, and allows only the near infrared light reflected by the iris surface of the person to be identified to reach the large mirror 84. Since the half mirror 91 reflects visible light, the half mirror 91 projects an image showing the eyes of the person to be identified 8 or the periphery thereof.
Therefore, the person to be identified 8 can easily focus the iris image by moving the photographing device 71 so that his / her eyes are located at the center of the half mirror 91 without looking at the monitor 2.

The illumination unit 90 is composed of six light emitting elements 89 having a peak wavelength in the near infrared light region. Three light emitting elements 89 are arranged on each of the left and right sides of the half mirror 91, and emit light from an illumination port 79 formed in the imaging unit 76. Lighting board 93 to which a light emitting element 89 and a drive circuit (not shown) for driving the light emitting element 89 are soldered
Is attached to the flange 92. The flange 92 is a part of the mirror holder 94. Mirror holder 94
Is the optical axis of the incident light passing through the half mirror 91.
A large mirror 84 that can be bent is attached. The mirror holder 94 is combined with the lens holder 95.
The lens unit 86 is fitted in the lens holder 95, and the lens unit 86 is inserted in the lens mount 96. A small mirror 85 and a CCD sensor substrate 87 are attached to the lens mount 96. The incident light reflected by the large mirror 84 passes through the lens unit 86 and reaches the small mirror 85. Incident light is further 90 with a small mirror 85
CCD that is bent once and is arranged on the CCD sensor substrate 87
Reach the sensor. For the same reason as described in the first embodiment, the focal length of the lens unit 86 is within a range of about 0.5 to 50 cm (preferably about 2 to 20 cm) from the photographing opening 78. It is fixedly set to.

The manufacturing process of the camera unit 88 having the above structure will be described below. First, the small mirror 85 is attached to the lens mount 96, and the CCD sensor substrate 87 is attached to the lens mount 96 with two screws 97. Next, the lens unit 86 is fitted into the hole of the lens mount 96, aligned with a predetermined position, and fixed from the side with screws 98. The lens unit 86 is fitted into the hole of the lens holder 95. Next, attach the large mirror 84 to the mirror holder 94,
The light emitting element 89 and the illumination substrate 93 for the light emitting element 89 are attached to the flange 92 of the mirror holder 94. The mirror holder 94 is fitted into the hole of the lens holder 95. That is, the lens holder 95 has the lens unit 8 at one end of the hole.
6 is fitted, and the mirror holder 94 is fitted in the other end of the hole. In this way, the lens unit 8
6, the mirror holder 94 and the lens holder 95 are shown in FIG.
4, the lens unit 86 and the mirror holder 94 have the same optical axis.

Next, the half mirror 91 is attached to the front cover 74 so as to cover the photographing opening 78. afterwards,
Lens unit 86 with integrated front cover 74
And the mirror holder 94 and the lens holder 95. At this time, the front cover 74 is the front cover 7
The screw holes of No. 4 are aligned with the respective fixing holes of the CCD sensor substrate 87 and the illumination substrate 93, and as shown in FIG.
Then, the lens unit 86, the mirror holder 94 and the lens holder 95 are fixed. Next, a cord (not shown) is passed through the cord hole 100 to fix the front cover 74 and the rear cover 75 with screws 101.

FIG. 16 is a system block diagram of the iris image input device of the fourth embodiment. The configuration of the recognition device 1 is similar to that of the first embodiment, and the CPU 3
5, memory 36, power supply unit 37, interface unit 3
8, an image input unit 39, a camera driver 40, and a lighting driver 41. The power supply unit 37 supplies power to the entire device.

The CPU 35 is connected to the image input section 39 by a signal line 42, and is further connected to the monitor 2 and the CCD sensor 32 of the camera 12 by a signal line 43. The CPU 35 is connected to the camera driver 40 and the illumination driver 41 by signal lines 44 and 46, respectively, and further, the CCD sensor 32 and the illumination unit 13 are connected by signal lines 45 and 47.
Respectively connected to. Further, the CPU 35 is connected to the switch 5 and the interface section 38 of the photographing device 3 by signal lines 48 and 49, respectively, and is connected to the memory 36 by a bus line 50. Also, the CPU of the recognition device 1
35 is connected to the switch unit 102, and the CPU 35
Detects pressing of the registration switch 72 and the verification switch 73 of the switch unit 102.

In the photographing device 71, the half mirror 91
The reflected light from the iris 7 that has entered through the optical system of the camera unit 88 forms an image on the CCD element surface on the CCD sensor substrate 87. The iris image is converted by the CCD element into a voltage proportional to the contrast, and the signal line 4 is used as a video signal.
3 is sent to the image input unit 39. The video signal at this time is also sent to the monitor 2, where it is converted into a video signal, and then an iris image is displayed as shown in FIG.

The CPU 35 converts the video signal of the iris image input to the image input unit 39 into a code which can be recognized by an individual by an iris patterning program stored in the memory 36 in advance. After that, in the case of the iris registration processing, it is stored in the memory 36, and in the case of the iris verification processing, the code registered in advance in the memory 36 is read out and compared and compared with the newly photographed iris code. The iris registration process is executed when the registration switch 72 is pressed, and the iris verification process is executed when the verification switch 73 is pressed.

Further, during the iris patterning process, the CPU 35 controls the camera driver 40 to change the image gain of the CCD sensor 32 and the value of the shutter speed so that a high quality image can be received. When the light quantity is insufficient, the light driver 41 is controlled to increase the light quantity of the light emitting element 33 in the lighting unit 36.

The illumination by the LED 89 can be arbitrarily changed by controlling the illumination driver 41 by the iris code processing method. Specifically, in addition to the control patterns such as the light amount control, blinking control, and continuous lighting control of all six LEDs 89, an arbitrary number of LEDs among the six LEDs
There are 89 control patterns such as light amount control, blinking control, continuous lighting control and the like. These can be selected according to the specifications of the iris patterning processing program registered in the memory 36 in advance.

The operation of the fourth embodiment is almost the same as the operation of the above-described first embodiment. When a power switch (not shown) of the recognition device 1 is turned on, power is supplied from the power supply unit 37 to the entire device, and the system starts up. The CPU 35 displays a screen for selecting iris registration and iris matching on the monitor 2. On the selection screen, the registration switch 72 is pressed to select the iris registration, and the verification switch 7 is selected to select the iris verification.
A message to the effect that 3 is pressed is displayed. Also CPU
Reference numeral 35 drives the illumination board 93 via the illumination driver 41 to turn on the light emitting element 89 in the photographing device 71.

As shown in FIG. 10, the person to be identified 8 holds the photographing device 71 with his / her hand 9 and brings the photographing eye 10 close to the photographing opening 78 of the photographing device 71. At this time, the person to be identified 8 can easily move the photographing device 71 by putting the palm of the hand on the roundness and the thumb and the index finger or the thumb and the middle finger on the constricted portion 81 because the photographing device 71 has the roundness and the constricted portion 81. Can have

The person to be identified 8 starts photographing the eyes. At this time, the light emitting element 89 of the photographing device 71 lights up,
The near-infrared light reflected from the iris 7 of the person to be identified 8 passes through the half mirror 91 and enters the camera unit 88, and the half mirror 91 reflects visible light to project the eyes 10 of the person to be identified 8. The person to be identified 8 can easily move the photographing device 71 so that his / her eyes are reflected in the center of the half mirror 91 by seeing his / her eyes reflected in the half mirror 91. The optical axis of the light emitting element 89 is parallel to the optical axis of the reflected light of the iris incident on the camera unit 88 in order to ensure the eye safety of the person to be identified 8.

The reflected light 104 from the iris 7 incident on the camera unit 88 is first reflected by the large mirror 84 as shown in FIG.
The optical axis is bent by the lens unit 96, the optical axis is bent again by the small mirror 85, and the light is input to the CCD sensor on the CCD sensor substrate 87.

Note that the photographing device 71 reflects the light entering the photographing device 71 through the photographing opening 78 by a plurality of mirrors (that is, the large mirror 84 and the small mirror 85) to make a CCD.
It is configured to lead to the sensor 32. There are three reasons for configuring the imaging device 71 in this way. The first reason is to reduce the thickness of the imaging device 71. This is because the light that has entered the photographing device 71 from the photographing port 78 is directly CCD
Since the thickness of the image pickup device 71 becomes thicker if it is configured to be received by the sensor, in order to reduce the thickness of the image pickup device 71, it is necessary to reflect light and then receive it by the CCD sensor. is there. The second reason is CCD
This is because the CCD sensor substrate 87 on which the sensor 32 is mounted is arranged in the space having the largest area inside the photographing device 71 (that is, the space near the center inside the photographing device 71). This is because the CCD sensor substrate 87 is particularly large in the components of the image capturing device 71, and therefore the image capturing device 71 must be arranged in the space that can take up the largest area inside the image capturing device 71. This is because it becomes larger. The third reason is to use a narrow-angle lens. The narrow-angle lens does not distort the iris image unlike the wide-angle lens even when the optical axis deviates from the center of the iris 7 of the person to be identified 8, and an iris image with high resolution and little variation in magnification can be acquired. However, narrow-angle lenses require long focal lengths. Therefore, in the present embodiment, by reflecting the reflected light 104 with a plurality of mirrors,
A long focal length can be secured inside the compact photographing device 71. Moreover, the imaging device 71 can shorten the distance between the eye 10 of the person to be identified 8 and the half mirror 91 by using the narrow-angle lens by increasing the optical path length of the reflected light 104. . Therefore, the imaging device 71 can reduce the illumination intensity of the light emitting element 89, and can reduce the power consumption for illumination.
When the person to be identified 8 wears glasses, extraneous light may be reflected by the glasses and reflected in an iris image. In such a case, the person to be identified 8 had to take off the glasses and photograph the iris. However, the extraneous light reflected by such spectacles causes the eye 10 of the person to be identified 8 and the half mirror 9
By shortening the distance between 1 and 1, the camera will not enter the shooting range of the camera. Therefore, the photographing device 71
By shortening the distance between the eye 10 of the person to be identified 8 and the half mirror 91, the person to be identified 8 can photograph the iris without removing the glasses.

The outer shape of the photographing section 76 of the front cover 74 and the half mirror 91 are both circular. Since the image pickup unit 76 and the half mirror 91 have such outer shapes, when the person to be identified 8 looks at them, the person to be identified 8
Can visually measure even positions from the left, right, top and bottom of these contours. Therefore, the imaging device 71 can reduce the mental burden when the person to be identified 8 positions the eyes.

The photographing device 71 may or may not have an automatic focusing function. Imaging device 71 having a configuration with an automatic focusing function
The person to be identified 8 can obtain a focused iris image by moving the photographing device 71 so that his / her eyes are reflected in the center of the half mirror 91. The image capturing apparatus 71 having no automatic focusing function displays the image displayed on the monitor 2 after the person to be identified 8 moves the image capturing apparatus 71 so that his / her own eye appears in the center of the half mirror 91. By moving the photographing device 71 forward and backward with respect to the eye 10 while looking at the other eye 11, a focused iris image can be obtained. Since the image pickup apparatus 71 having a configuration to which the automatic focusing function is not added can perform focusing in this way, it is possible to use a fixed focus lens, and the apparatus can be downsized.

When the switch 72 or 73 is pressed by the person to be identified 8 when the camera is focused on the iris 7, the CPU 35 causes the signal data to personally recognize the iris image, as in the first embodiment. And is stored in the memory 36. At this time, the CPU 35 continues to store the iris images of a plurality of frames input from the photographing device 3 in the memory 36, and when detecting that the switch 5 is pressed, the iris image is continuously stored in the memory 36 for a while. After continuing, the iris images of a plurality of frames stored in the memory 36 are extracted, and those which satisfy the condition for use in registration or matching are extracted, converted into signal data that can be recognized by the individual, and stored in the memory 36. Remember. When the registration switch 72 is pressed, the CPU 35 displays a registered message on the monitor 2 to end the processing, and when the verification switch 73 is pressed down, the CPU 35 stores the iris pattern data registered in advance. Then, the iris pattern data registered this time is collated, the message of the collation result is displayed on the monitor 2, and the process is terminated.

(Fifth Embodiment) Next, a fifth embodiment will be described. In the fifth embodiment, a pointing device (mouse, joystick, pressure sensitive panel, etc.) is mounted on a photographing device for photographing an iris. 17 and 18 are perspective views showing an image pickup apparatus according to the fifth embodiment.

17 and 18, in the image taking device 111 of the fifth embodiment, an illumination detecting sensor 112 is arranged on the side of the front cover 74 of the image taking section 76. Since the illumination detection sensor 112 is arranged in the reflection section 82, the light of the light emitting element 89 reflected from the subject at the time of photographing the iris is input to the illumination detection sensor 112. Lighting detection sensor 1
12 is provided inside the front cover 74.

A ball cap 113 is attached to the front cover 74 side of the grip portion 77, and a ball 114 is rotatably arranged on the ball cap 113.
Pads 115 are attached to the upper and lower portions of the ball cap 113. The pad 115 is for adjusting the level difference with the surface of the reflection portion 82, and the surface of the pad 115 is flush with the surface of the reflection portion 82. This is the photographing device 11
This is to prevent rattling even if the rear cover 75 side is pushed when the mouse operation is performed with the front cover 74 side of No. 1 lying down on the desk.

On the rear cover 75, the right switch pad 1
16 and a left switch pad 117 are provided, and the left and right switch pads 116 and 117 allow the right switch and the left switch for mouse operation described below to be independently pressed. The left and right switch pads 116 and 117 can rotate at fulcrums 118 and 119, respectively.
By pressing the tips of 6, 117, the left and right switches for mouse operation can be pressed.

The photographing device 111 can be connected to an external device by a cable 120, and the cable 120 has a connector block 121. The connector block 121 has connectors 122, 123, and 124.

FIG. 19 is a block diagram showing the arrangement of an image pickup apparatus according to the fifth embodiment. In FIG. 19, the photographing device 111 includes a camera unit 88, an illumination unit 90, and an illumination detection sensor 1.
12, a mouse unit 131 and a power supply control unit 132. A connector can be connected to the PC through a signal line in each of these units.

The mouse portion 131 moves the ball 114 so that the ball 114 moves when the photographing device 111 is moved in an arbitrary direction.
The rotation amount of the ball 114 is measured by the X-direction encoder 133 and the Y-direction encoder 134. The amount of rotation in each direction at that time or a signal related to the amount of rotation is sent to an external device via the mouse connector 135, the signal line 138, and the connector 122. The mouse unit 131 has a right switch 136 and a left switch 137, and ON / OFF signals when the switches 136 and 137 are pressed are also sent to an external device via the mouse connector 135, the signal line 138 and the connector 122.

In the fifth embodiment, when the iris is input, the iris image is registered when the right switch 136 is pressed, and the iris image is collated when the left switch 137 is pressed. For example,
Send a signal to your computer). The monitor 2 includes the switch 72 and the switch 73 described in the fourth embodiment.
May be provided, or these may be excluded.

The camera section 88, the illumination section 90 and the illumination detection sensor 112 are connected to the power supply control section 132. The illumination detection sensor 112 receives the light from the illumination unit 90 and brightens the iris or the face of the person to be identified when the person to be identified 8 holds the image capturing device 111 in the hand and photographs the iris. To detect. And illumination detection sensor 1
12 transmits a detection signal to the power supply controller 132. vice versa,
The illumination detection sensor 112 is used by the person to be identified 8 as the imaging device 111
When using the mouse as a mouse on a desk, the lighting unit 90
It does not detect the brightness because it does not receive light from. That is, the iris shooting is performed when the illumination detection sensor 112 detects the brightness, and the mouse operation is performed when the illumination detection sensor 112 does not detect the brightness. The power supply controller 132 is connected to the illumination detection sensor 112 by a signal line 138. The power control unit 132
On / off control of input power to the camera unit 88 and the illumination unit 90 is performed by a signal from the illumination detection sensor 112.

The power supply control section 132 is connected to the CCD sensor board 87 of the camera section 88 by a signal line 139, and is connected to the illumination board 93 of the illumination section 90 by a signal line 140. Further, the power supply controller 132 is connected to the connector 124 via the power supply connector 139. Power is supplied to the camera unit 88 and the illumination unit 90 by the power supply control unit 132.

The power supply control section 132 has the CCD sensor substrate 8
7 and the illumination substrate 93 have different input voltages, power is supplied from an external device and the power is supplied to each substrate 87,
The voltage is converted into the voltage of the specification of 93 and supplied to the substrates 87 and 93. Therefore, the power supply control unit 132 has a configuration including both an AC / DC conversion unit and a DC / DC conversion unit if the power supply of the external device is AC. The AC / DC conversion unit is not necessary when DC is supplied from the external device to the power supply control unit 132.

The camera section 88 is provided with a CCD connector 141. The CCD connector 141 is connected to the CCD sensor substrate 87 by the signal line 142, and also the signal line 143.
Is connected to the connector 123. That is, CCD
The image signal output from the sensor substrate 87 is sent to the connector 123 via the CCD connector 141.

FIG. 20 is a system block diagram when the photographing apparatus is connected to a personal computer (PC) in the fifth embodiment.

In FIG. 20, the connector 122 connected to the mouse unit 131 conforms to the conventional mouse signal line specifications, and is connected to the mouse signal line 153 connected to the CPU 152 of the PC 151. On the other hand, since the connector 123 connected to the camera unit 88 outputs the image signal, it is connected to the image input unit 154 of the PC 151 via the signal line 155. The image input unit 154 is the PC 15
PC1 if 1 is a tower type or desktop type
It corresponds to a capture board that can be connected to the ISA bus or PCI bus of the 51 main body. Therefore, the image input unit 154 uses the specifications of the connector 123 as those used in the capture board (for example, pin jack,
BNC, etc.) so that the signal line 1 with the same specifications
It can be connected to the connector 123 by 55.

Further, the power supply control section 132 in the photographing apparatus 111
The connector 124 connected to is connected to the power supply unit 157 by the signal line 156.

The CPU 152 is connected to the monitor 159 via the signal line 158, connected to the keyboard 161 via the signal line 160, and the printer 163 via the signal line 162.
It is connected to the. The image signal input from the photographing device 111 is processed by the CPU 152, and the processing result is output and displayed on the monitor 159. In addition, the printer 163 prints out if necessary.

The CPU 152 is also connected to the memory 165 by a signal line 164. In the memory 165, the iris image of the person to be identified is registered and can be newly registered. The CPU 152 has a function of registering the iris image input by the image input unit 154 in the memory 165, and a function of comparing the newly input iris image with the registered iris image to determine whether they match. Have.

The operation of inputting an iris image in the fifth embodiment having the above configuration will be described. Input of registration or verification is performed by the right switch 136 or the left switch 137 of the mouse unit 131. In the fifth embodiment,
Since the iris image for registration or verification is input by pressing the right switch 136 or the left switch 137 provided in the image pickup apparatus 111, it is easier to handle than the fourth embodiment. In addition, the position of the eye of the person to be identified with respect to the imaging device 111 is less likely to be misaligned.

In addition, in the fifth embodiment, when the person to be identified 8 picks up the photographing device 111 and moves it away from the desk when inputting the iris image, the illumination detection sensor 112 detects the brightness of the ambient light. A detection signal is sent to the power supply control unit 132, and the power supply control unit 132 supplies power to the lighting unit 90. As a result, in the photographing device 111, the LED 89 emits light, and the iris can photograph. The operations from the shooting of the iris to the acquisition of the iris image in the fifth embodiment are the same as those in the fourth embodiment. The acquired iris image is input to the image input unit 154 of the PC 151 and further used by the CPU 152 for registration or matching.

When the photographing of the iris is completed, the photographing apparatus 1
11 is placed on a desk, for example. At this time, the photographing device 11
1 is placed with the front cover 74 side facing down,
The front cover 74 side becomes dark. The illumination detection sensor 112 detects this, and sends a signal indicating that it has become dark to the power supply control unit 132. Accordingly, the power control unit 132
Stops the power supply to the illumination unit 90. This can prevent unnecessary power consumption due to forgetting to turn it off.

It goes without saying that the illumination detection sensor for detecting the brightness may be provided in the image pickup device 71 of the fourth embodiment.

In the fifth embodiment, the number of recent PCs in which the mouse is connected is increasing, and when the mouse and the photographing device are separately connected to the PC, the work space on the desk becomes small. Is the solution. That is, the fifth
In the embodiment of the present invention, since the function of a mouse, which is a pointing device, is added to the photographing device 111, it is possible to perform the work with the mouse and the input work of the iris image with one device without reducing the work space. Play.

21 and 22 are perspective views showing modifications of the image pickup apparatus according to the fifth embodiment. In this modification, the mouse portion is provided not on the front cover side but on the rear cover side. 21 and 22, the photographing device 11
1, a ball cap 113 is provided on the side of the rear cover 75 on the side of the photographing unit 76, and a ball 114 is rotatably attached to the ball cap 113.

By providing the ball 114 on the rear cover 75 side, the person to be identified 8 can rotate the ball 114 with his / her finger even while holding the image pickup device 111 in his hand and taking an image of the iris. As a result, for example, the person to be identified 8 moves the ball 114 with his / her finger with the image pickup device 111 still facing the eye 10 to select the icon displayed on the monitor 159, and the different application to the iris image input device. It is possible to activate it.

[0133]

As described in detail above, according to the present invention, the person to be identified can hold the image pickup device with his / her own hand to photograph his / her iris, and the iris code is easy and quick to operate. Can be obtained. Further, since the pointing device is integrally provided, the illumination detection sensor arranged on the surface facing the iris of the person to be identified at the time of photographing, and the power supply control unit for controlling the illumination means by the output of the illumination detection sensor are provided. It is possible to perform the work with the mouse and the work for inputting the iris image with one device, and it is possible to automatically stop the power supply to the illumination means when the device is used as a pointing device.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an iris image input device according to a first embodiment.

FIG. 2 is a detailed diagram showing the configuration of the image capturing apparatus shown in FIG.

FIG. 3 is a system block diagram of the iris image input device shown in FIG.

FIG. 4 is a flowchart showing an operation of the first embodiment.

FIG. 5 is a diagram showing correspondence between eye images and geometric patterns.

FIG. 6 is a table in which geometric patterns, eye states, and instructions to the person to be identified are associated with each other.

FIG. 7 is a monitor screen showing an operation panel according to a third embodiment.

FIG. 8 is a diagram showing a position of a pupil extracted from an eye image.

FIG. 9 is a flowchart illustrating the operation of the third embodiment.

FIG. 10 is a configuration diagram of an iris image input device according to a fourth embodiment.

FIG. 11 is a perspective view showing an image pickup apparatus according to a fourth embodiment.

FIG. 12 is a perspective view showing an image pickup apparatus according to a fourth embodiment.

FIG. 13 is a cutaway perspective view showing the internal structure of the image capturing apparatus.

FIG. 14 is a perspective view showing an internal unit of the image capturing apparatus.

FIG. 15 is a side view illustrating the inside of the image capturing apparatus.

FIG. 16 is a system block diagram of an iris image input device according to a fourth embodiment.

FIG. 17 is a perspective view showing an image pickup apparatus according to a fifth embodiment.

FIG. 18 is a perspective view showing an image pickup apparatus according to a fifth embodiment.

FIG. 19 is a block diagram showing a configuration of a photographing device according to a fifth embodiment.

FIG. 20 is a system block diagram when the image capturing device is connected to a PC.

FIG. 21 is a perspective view showing a modified example of the fifth embodiment.

FIG. 22 is a perspective view showing a modified example of the fifth embodiment.

[Explanation of symbols]

1 recognition device 2 monitors 3 Imaging device 4 shooting holes 5 switches 6 cables 7 Iris 8 Person to be identified 9 hands 10th eye 11 the other eye

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-8-191796 (JP, A) JP-A-10-5195 (JP, A) JP-A1-216486 (JP, A) JP-A-8- 266476 (JP, A) JP-A-8-266468 (JP, A) JP-A-9-313441 (JP, A) JP-A-10-69463 (JP, A) JP-A-10-49298 (JP, A) JP-A-11-3175 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G06T 1/00-7/60 A61B 3/00-3/16 A61B 5/117

Claims (5)

(57) [Claims] 1. A portable image taking apparatus for obtaining an iris image, wherein a lighting means for irradiating the iris with light and an image taking hole for taking the image into the apparatus face a iris of a person being photographed at the time of taking an image. The integrated pointing device, an illumination detection sensor that is disposed on the surface facing the iris of the subject at the time of shooting, and that detects the brightness of ambient light, and the illumination detection sensor controls the brightness. If not, then
The lighting means is turned off by the output of the lighting detection sensor.
An image pickup apparatus, comprising: a power supply control unit for controlling to turn on the light . 2. A pre-Symbol disposed photographing hole photographing apparatus according to claim 1 wherein in which a half mirror that reflects visible light. 3. The pointing device is a right switch.
Switch and a left switch.When inputting an iris image, the right switch or the left switch is used.
Contract to enter registration or verification by pressing the button
The imaging device according to claim 1 . 4. Use of the pointing device
In this case, turn down the side where the illumination detection sensor is installed.
The photographing apparatus according to claim 1, wherein the photographing apparatus is moved while being moved . 5. An iris based on the photographing apparatus according to claim 1 and an iris image acquired by the photographing apparatus.
A recognition device for registering or collating information about the image and a monitor for displaying the iris image acquired by the photographing device.
And an iris image input device .