JP2000331207A - Gate system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform gate control while exactly catching the image of the face of a passing person by performing photographing while setting the photographing direction of a photographing camera lower and obliquely upper than the height position of the face. SOLUTION: A gate system 11 monitors the condition of entering/leaving a room by arranging a first image pickup camera 14 and a second image pickup camera 15 on both the sides of an entrance/exit 13 of a room 12. The first and second image pickup cameras 14 and 15 are built in respective camera placing stands 16 installed on both the sides of the entrance/exit 13 of the room 12 so as to acquire images and the image acquiring angle is set a little obliquely upper than a position lower than the face height of a passing person 17 such as a wandering aged or nurse. Thus, the expression of the face of the passing person 17 tending to look down a little or features of the eyes, nose, mouth or the like can be clearly caught. This acquired face information is used for a collation element of the passing person 17, and this is collated with the previously registered information of the passing person 17 and set so as to be confirmed every time of entering/leaving the room.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate device for controlling the entrance and exit of a wandering person in a nursing home, for example, and more particularly to a gate device for controlling traffic according to pre-registered human face information. .

[0002]

2. Description of the Related Art Generally, when an image is taken by a monitoring imaging camera, the imaging camera is hung on a ceiling, and this imaging camera takes an image of, for example, a situation in a store, and monitors the taken image.

[0003] Such an imaging camera often shoots obliquely downward from above so that the entire inside of the store can be monitored with a small number of installations. For this reason, although the movement of a person can be detected, the facial expression and characteristics of each human face cannot often be captured.

[0004]

This is because humans tend to turn their faces in a horizontal or slightly downward direction when walking, and when their hair is on their forehead or when they are wearing a hat. , The eye that is an important distinguishing factor of humans,
This is because characteristic parts such as the nose and mouth are easily hidden.

[0005] In addition, when collation is performed by a computer using face information captured by an imaging camera, the face information captured from above the height position of the face has a small amount of features and is insufficient information that is difficult to verify. I was

In addition, a pedestrian is not always looking directly at the direction of travel, but is often facing left or right. The eyes, nose, mouth, and other parts that indicate may not be completely visible.

Therefore, the present invention focuses on accurately capturing the direction of the face, which is the tendency of a pedestrian to descend, and the features of the face such as eyes, nose, mouth, etc., and changes the imaging direction of the imaging camera to the face height position. It is an object of the present invention to provide a gate device that performs a gate control by accurately capturing an image of a passerby's face by capturing an image obliquely upward from below.

[0008]

According to the first aspect of the present invention,
What is claimed is: 1. A gate device for controlling passage of a gate position by comparing human face image information captured by an imaging camera with registration information registered in advance, wherein an imaging direction of the imaging camera is increased from a position below a face height of a passage. It is characterized by pointing to.

The invention according to claim 2 is characterized in that the imaging camera is arranged on the side of the passage.

The invention according to claim 3 is characterized in that the imaging cameras are arranged on both sides of the passage.

According to a fourth aspect of the present invention, there is provided a gate device for controlling passage of a gate position by comparing face image information of a person imaged by an image pickup camera with registered information registered in advance. Then, the face image information photographed by the user is compared with the registered information, and the gate traffic control is performed based on the result of the comparison.

[0012]

According to the present invention, when an image of a human face passing through a passage is picked up by an image pickup camera, the image pickup direction of the image pickup camera is picked up from a position below the face height of the passage upward. In addition, it is possible to clearly capture the image of the facial expression and features of eyes, nose, mouth, etc., of the face of a pedestrian who is slightly inclined downward and has a downward tendency. In addition, even if the pedestrian is facing in the horizontal direction, the pedestrian may be wearing a headgear or the like, or may not be visible from above due to drooping hair, and in such a case, face information can be accurately captured from below. . In particular, pedestrians do not always look directly at the direction of travel, and are often facing the right or left, especially in such cases. Part can be completely copied.

Therefore, also in the case of collating with the face information of the registrant registered in advance, the feature amount of the face captured from obliquely below is reliably obtained, so that the collation accuracy is improved and the collation reliability is improved. Therefore, accurate gate control can be performed by accurately capturing the feature amount of the human face.

When the imaging camera is arranged on the side of the passage, face information imaged from the side can be obtained.
For example, it is possible to collate registered information corresponding to a person who has a habit of looking at the imaging camera and a person who does not look at the camera.

Further, when the imaging cameras are arranged on both sides of the passage, face information can be obtained from the imaging cameras on both sides, so that abundant face information can be obtained, and the matching accuracy can be further improved. In particular, when the camera is facing left or right, the imaging camera on one side can accurately capture the feature amount of the face.

Further, when face image information picked up by a plurality of image pickup cameras is collated with registered information, and when the passage control of the gate position is performed based on the collation result, it is determined that the face image information is most likely to be a face. The gate control with high accuracy can be performed by selecting the determined face image information.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows a gate device for controlling the entrance and exit of a wandering person in a nursing home. As shown in FIG. 1, the gate device 11 has a first imaging camera 14 and a second imaging camera on both sides of an entrance 13 of a room 12. 15 to monitor the entry / exit status.

The first imaging camera 14 and the second imaging camera 15 described above are incorporated in respective camera mounts 16... Installed on both sides of the entrance 13 of the room 12 so as to be able to acquire images, and wander their image acquisition angles. It is set obliquely upward from a position below the face height of a passer 17 such as an elderly person or a nurse. As a result, it is possible to clearly capture the facial expression, eyes, nose, mouth, etc., of the face of the passer-by 17 who is inclined downward slightly.

In some cases, the passerby 17 may not be able to see from above due to the fact that the passerby 17 is wearing a hat or the like or his hair is drooping. be able to.

Further, since one face information can be obtained from different angles from the imaging cameras 14 and 15 on both sides, abundant face information can be obtained. In particular, even when the camera is facing left or right, one face information can be obtained. The imaging camera can accurately capture the feature amount of the face.

When acquiring the face information of the passer-by 17,
The shape and size of each part such as eyes, nose, mouth, etc. and the whole face,
The face information unique to the person, such as the hairstyle, the presence or absence of glasses, the color, wrinkles, the degree of makeup, etc., is acquired. The acquired face information is used as a collating element of the passer-by 17, and is collated with the registration information registered in advance of the passer-by 17, so that it is set to be confirmed every time a person enters or leaves the room.

FIG. 2 shows a monitoring system for the gate device 11. The image information obtained by the imaging cameras 14 and 15 on both sides is guided to a monitoring device 21 of a nurse center, where the entrance / exit state is monitored and the nursing home is monitored. The specific wanderer is the entrance 13
If it is determined that the user is to leave, the user is notified of the fact to the alarm device 22 and a nurse call is made.

In this case, the monitoring device 21 is constituted by using a personal computer having a display 21a for displaying a monitoring image and various data and an input device 21b for inputting various data, wherein each face information of the registrant is stored in advance. 23 are registered and set, and the passer 17 is determined by comparing the face image information of the passer 17 captured by the imaging cameras 14 and 15 with the registration information of the monitoring device 21. Based on the result of the determination, a traffic permitting / traffic regulation measure is performed.
For example, when it is detected that a wandering person leaves, a buzzer for an alarm is sounded based on the detection, the nurse is informed and voice guidance is provided from a speaker, or the nurse performs a care treatment artificially.

FIG. 3 shows a control circuit block diagram of the gate device 11. The CPU 31 controls each circuit device in accordance with a program stored in the ROM 32, and transmits control data to the R device.
It is stored in a readable manner by AM33.

The image processing device 34 includes the imaging cameras 1 on both sides.
When the face images are acquired from the face images 4 and 15, one face image information determined to be most likely to be a face is selected from the acquired both face image information, or the face image that can be compared by synthesizing both face image information Generate The feature amount of the face image information obtained in this way is compared with the feature amount of the registrant registered in advance and confirmed.

In particular, a passerby is not always looking directly at the traveling direction, and is often facing the left or right. In such a case, the face image is obtained by acquiring the face images from the left and right. Features such as eyes, nose, and mouth can be completely captured without overlooking the volume.

The collation processing operation of the gate device 11 thus configured will be described with reference to the flowchart of FIG. Now, when the imaging cameras 14 and 15 on both sides capture the exit of the passerby 17 from the entrance 13 of the room 12, the image data of the profile is obtained from the left and right sides of the passerby 17. Based on this, the CPU 31 determines the featured eyes,
The position of the face is accurately detected from the nose, mouth, etc., and the features of the face from the left and right are extracted (steps n1 to n4). The extracted face features are compared with the features registered in advance. Then, it is determined whether the face is most likely to be an image acquired by one imaging camera or an image acquired by the other imaging camera (steps n5 to n6). The registered image is compared with the registered image from the imaging direction (step n7).

If the face image is acquired by the second imaging camera, it is compared with the registered image from the imaging direction (step n8).

If the image is inappropriate for the collation determination, the two images are combined to create a frontal face image, and the combined frontal face image is collated with the registered image (step n).
9 to n10).

By the way, the two left and right imaging cameras 14,
By using No. 15, the management performance for distinguishing a wandering person to be monitored from a caregiver such as a nurse other than that can be improved.

For example, as shown in FIG.
When the person exits, the driver loses his attention and tends to go straight through the entrance 13, so that the left and right side face images are acquired from the imaging cameras 14 and 15 on both sides, and based on this, Therefore, it is easy to determine that the exiting person is the loitering person 17a, and the matching accuracy is improved.

On the other hand, as shown in FIG.
In the case where 7b exits, if the user is informed in advance that he / she exits while looking at one imaging camera 14, a face image of the designated frontal face can be obtained from one imaging camera 14. Based on this, it is automatically determined that the leaver is the caregiver 17b, and the matching accuracy is improved.

Therefore, the wanderer 17a and the caregiver 17b can be clearly distinguished from the side face and the front face in the discrimination stage at the discrimination stage, and the accuracy of the collation judgment can be improved and the judgment can be promoted.

Further, there is a possibility that the position of the imaging camera is shifted and the collation performance is degraded. In order to solve this, as shown in FIG. An image is obtained as a superimposed image 73 obtained by superimposing the superimposed image 72 on the misaligned position. This allows
Adjustment corresponding to the displacement of the imaging camera can be performed, and deterioration of the matching performance can be suppressed.

As described above, when the face of a pedestrian entering and exiting the entrance is imaged by the image capturing camera, the image capturing direction of the image capturing camera is upward from a position lower than the face height to an upper direction. It is possible to clearly capture the image of the facial expression and characteristics of eyes, nose, mouth, etc., of the face of the passerby who is facing downward. In addition, even if the passerby is facing in the horizontal direction, he or she may be wearing a hat or other covering object, or may not be visible from above due to drooping hair, and in such a case, face information can be accurately captured from below. . Therefore, even in the case of collating with the face information of the registrant registered in advance, the feature amount of the face captured from obliquely below is reliably obtained, and the collation accuracy is increased,
The verification reliability is improved. For this reason, it is possible to accurately capture the feature amount of the face of the passerby and perform accurate gate control.

Further, when the imaging camera is arranged on the side of the passage, face information captured from the side can be obtained, so that identification can be performed according to persons who look at the imaging camera and people who do not. Can be collated as suitable information.

Further, when a plurality of imaging cameras are used, abundant face information can be obtained because face information can be obtained from the plurality of imaging cameras, and the matching accuracy is further improved. In particular, when the camera is facing left or right, one imaging camera can always accurately capture the feature amount of the face.

In the correspondence between the present invention and the configuration of the above-described embodiment, the imaging camera of the present invention corresponds to the first imaging camera 14 and the second imaging camera 15 of the embodiment. Are passers-by 17, wanderers 17a and caregivers 1
7b, the gate and the gate device correspond to the two imaging cameras 14, 15 for monitoring the entrance 13 of the room 12, and the monitoring device 21 and the alarm device 22, respectively.
The present invention can be applied based on the technical idea described in the claims, and is not limited to the configuration of the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an imaging state of a gate device of the present invention.

FIG. 2 is a configuration diagram illustrating a monitoring system of the gate device according to the present invention.

FIG. 3 is a control circuit block diagram of the gate device of the present invention.

FIG. 4 is a flowchart showing a collation processing operation of the gate device of the present invention.

FIG. 5 is a plan view showing an imaging state of a wandering person of the gate device of the present invention.

FIG. 6 is a plan view showing an imaging state of a caregiver of the gate device of the present invention.

FIG. 7 is an explanatory view showing a position shift correction screen of the gate device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Gate device 12 ... Room 13 ... Entrance / exit 14 ... 1st imaging camera 15 ... 2nd imaging camera 16 ... Camera mounting stand 17 ... Passenger 17a ... Wandering person 17b ... Caregiver 21 ... Monitoring device 22 ... Alarm device 23 ... Registration Each person's face information 31 ... CPU 34 ... Image processing device

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 2F065 AA01 AA51 BB05 CC16 FF04 JJ03 JJ05 JJ08 JJ19 JJ26 NN20 PP01 QQ00 QQ21 QQ23 QQ24 QQ25 SS09 3E038 AA01 CA03 CC01 DB09 EA02 FA10 GA02 HA06 JA04 JB1005C05A05 CH01 EA05 FA01 FC03 FC12 FF06 HA12 HA18

Claims (4)

[Claims] 1. A gate device for controlling the passage of a gate position by comparing human face image information captured by an image capturing camera with registered information registered in advance, wherein the image capturing direction of the image capturing camera is determined based on the face height of a passage. A gate device which is directed upward from a lower position. 2. The gate device according to claim 1, wherein the imaging camera is disposed on a side of the passage. 3. The gate device according to claim 1, wherein the imaging cameras are arranged on both sides of the passage. 4. A gate device for controlling passage of a gate position by comparing human face image information picked up by an image pickup camera with pre-registered registration information, wherein the face image information picked up by a plurality of image pickup cameras is provided. And a gate device that controls the passage of the gate based on the result of the comparison.