JP2015231121A - Imaging apparatus, bioinstrumentation booth, imaging apparatus control method, program, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately determine the area of a subject in a captured image independently of the color of the body or clothes of the subject.SOLUTION: A bioinstrumentation booth (100) comprises: a background area (BS1) which includes an arrangement of color areas of at least two types different in at least luminance or chromaticity from each other; a camera (107) for imaging a user (50) with the background area (BS1) as the background; and an information processor (1) for detecting the position of the user (50) by referring to an image captured by the camera (107).

Description

  The present invention relates to an imaging apparatus that detects the position of an imaged person.

  In recent years, it has been widely recognized that daily health management is important as a prevention and countermeasure for lifestyle-related diseases. And by measuring and recording biological information such as body temperature, body weight, body fat (including visceral fat), bone density, blood pressure, or amount of exercise (steps, calorie consumption, etc.) on a daily basis, It is attracting attention to manage their own health.

  Conventionally, most of the biological information as described above has been measured using dedicated devices installed in medical / health institutions such as hospitals and health centers. Also, for the daily health management of users (subjects), healthcare-related devices that can be easily used in homes, sports facilities, or public facilities such as shopping centers are widely used in the private sector. Examples of such devices include a weight scale, a body fat scale, a thermometer, a heart rate monitor, and a blood pressure monitor.

JP 2009-205173 A (published September 10, 2009) JP 2010-042134 A (released February 25, 2010)

  The measurement of biological information at a place with the above-mentioned dedicated equipment usually can receive the assistance of a laboratory technician or nurse, etc., so that biological information can be measured correctly, but it cannot be measured easily. It is not suitable for daily health management.

  Further, in daily health management using a scale or the like, it is important to perform daily measurements and record them, and manage them in order to recognize changes and changes in the measured values. Conventionally, the measurement result is recorded by being copied on a notebook or a paper medium such as a recording sheet. However, there is a possibility that an error may occur when the biological information displayed on the device that has measured the biological information is copied, and there may be a problem in the reliability of the recorded biological information. In addition, it is necessary to prepare a notebook and a writing instrument for recording biometric information at the time of recording, and the operation of recording biometric information may be complicated. In order to make it easier to continue the operation of recording biological information, it is necessary to reduce the possibility and complexity of errors.

  Accordingly, the present inventors have independently studied to develop a health support system that functions as an information management device that comprehensively manages the measured biological information, instead of recording the measured biological information by handwriting. ing.

  This health support system is a system that obtains user's biological information measured by various devices and displays, records, and processes data (such as graphing). A form such as a bed type or a telephone box type can be applied. Here, the chair type indicates that the user's posture is sitting, the bed type indicates that the user's posture is supine, and the telephone box type indicates that the user's posture is standing. Pointing to things.

  Since daily health management is performed by users of a wide age group from elderly people to children, it is desirable that devices such as health support systems can be easily used even by users who are not used to machine operations. For that purpose, it is desirable to automate the operation as much as possible and to reduce the rate of operation by the user, and even when the operation is requested from the user, the operation is required to be as simple as possible. Therefore, for example, a technique for automatically recognizing the position of the user is useful. This is because if the user's position can be recognized, various adjustments for adapting to the user's position can be automatically performed.

  As a method for automatically recognizing the position of a user, a method using image data obtained by capturing the user is known. For example, Patent Document 1 discloses a reflecting mirror that reflects a person image of a subject person, an imaging camera that captures a person image reflected by a reflecting surface of the reflecting mirror, and an image of the person image captured by the imaging camera. An imaging apparatus including a control unit that processes data is disclosed.

  Further, Patent Document 2 includes at least a seat portion and a backrest portion, and is disposed in front of the user's seating position, and at least the backrest portion of the user who leans against the backrest portion in the sitting state is provided from the front. A chair-type massage machine that includes an imaging unit that captures an image as a background and performs a treatment operation based on imaging information of a user obtained by the imaging unit is disclosed.

  However, the prior art as described above depends on the color of the subject's body or clothing, for example, the color of the subject's hair, the presence or absence of a hat, the color of the skin, the color of the illumination light, the color of the clothing, etc. There is a problem that a detection error may occur.

  For example, in the imaging apparatus of Patent Document 1, since the vertical position adjustment of a person image is performed in front of a background with a constant reflectance, the vertical position cannot be accurately adjusted when the reflectance of the background and the person is close.

  Further, the massage machine of Patent Document 2 estimates the image area of the user in an image obtained by imaging the user from the front with at least the back part of the massage machine as a background. If you are wearing a hat or clothing that contains the same surface texture or color, you may not be able to estimate accurately.

  The present invention has been made in view of the above-described problems, and a main object of the present invention is to provide a technique for accurately detecting the position of the person being imaged regardless of the color of the person being imaged or the clothing. And

  An imaging apparatus according to the present invention includes a background portion in which two or more color regions having different luminance and chromaticity are arranged, an imaging portion that captures an image of a person to be imaged with the background portion as a background, Detection means for detecting the position of the person to be imaged with reference to an image captured by the imaging unit.

  An imaging apparatus control method according to the present invention includes an imaging step of imaging a person to be imaged with a background portion in which two or more color regions having different brightness and chromaticity are arranged as a background, and the imaging step And a detection step of detecting the position of the person to be imaged with reference to the image captured in step.

  According to the above configuration and method, since a background including two or more color regions is used, even when the luminance or chromaticity of one color of the imaged person and the background is close, the luminance of the other colors of the background Alternatively, since the chromaticity is clearly different, the position of the person to be imaged can be accurately detected. That is, according to said structure, the position of a to-be-photographed person can be detected correctly irrespective of the to-be-photographed person's body or the color of clothing.

  Furthermore, in the imaging apparatus according to the present invention, the detection means estimates whether each pixel is a pixel corresponding to the background portion with reference to a pixel value indicating at least one of luminance and chromaticity of each pixel of the image. The position of the person to be imaged may be detected with reference to the estimation result.

  Furthermore, in the imaging apparatus according to the present invention, the detection means may be configured such that the pixel value of each pixel of the image is outside the pixel value range defined for each color region of the background portion corresponding to each pixel. The pixel is determined as a non-background pixel, an area where the non-background pixel is continuous for a number equal to or greater than a threshold is determined as an imaged person area corresponding to the imaged person, and the area of the imaged person in the image is determined. The position of the person to be imaged may be detected with reference to the position.

  According to said structure, the area | region corresponding to the to-be-photographed person in the image imaged by the said imaging part can be determined successfully, and the position of the to-be-photographed person can be detected.

  Furthermore, in the imaging device according to the present invention, the arrangement of the color regions in the background portion may constitute a repetitive pattern.

  In the imaging device according to the present invention, each of the color regions may be striped, and may be adjacent to a color region having at least one of luminance and chromaticity different from each other.

  In the imaging device according to the present invention, the arrangement of the color regions in the background portion may be a lattice.

  In the imaging device according to the present invention, color regions having at least one of luminance and chromaticity different from each other in the first direction defined in the background portion and the second direction substantially orthogonal to the first direction. May be arranged alternately.

  According to said structure, patterns, such as a stripe, a lattice, a houndstooth check (check), can be applied as a background. Thereby, the area of the person to be imaged can be accurately determined without being influenced by the color scheme or pattern of the person to be imaged.

  In addition, since various patterns (patterns) combining various luminance and chromaticity can be used as the background, the present invention can be applied to various devices without impairing the design.

  Furthermore, in the imaging apparatus according to the present invention, the detection means may be configured such that the pixel value of each pixel of the image is outside the pixel value range defined for each color region of the background portion corresponding to each pixel. The pixel is determined as a non-background pixel, an area where the non-background pixel is continuous for a number equal to or greater than a threshold is determined as an imaged person area corresponding to the imaged person, and the area of the imaged person in the image is determined. The position of the person to be imaged is detected with reference to the position, and each of the color areas extends in the horizontal direction, and the detection means is located at the top of the area to be imaged within the predetermined area. The position of the person to be imaged may be detected with reference to the position of the area of the person to be imaged.

  According to said structure, the height of a to-be-photographed person can be detected using a horizontal striped background.

  Furthermore, in the imaging apparatus according to the present invention, the background section can switch a background image, acquires information including at least one of luminance and chromaticity of a color included in the person to be imaged, and sends the information to the person to be imaged. The included color may further include background selection means for displaying a background image including a color having at least one of luminance and chromaticity different on the background portion.

  According to said structure, the background containing the color in which at least one of a color contained in a to-be-photographed person and a brightness | luminance and chromaticity differs is selected. Thereby, in the image which image | photographed the to-be-photographed person and the background, at least one of a brightness | luminance and chromaticity can be made to differ clearly by the color of a to-be-photographed person and the color of a background. Therefore, the position of the person to be imaged can be determined more accurately.

  Furthermore, in the imaging apparatus according to the present invention, the two or more types of color regions include a low-brightness region having a lower brightness than the other color regions and a high-brightness region having a higher brightness than the other color regions. .

  According to said structure, according to the difference in brightness, the area | region corresponding to a to-be-photographed person in a captured image and the area | region corresponding to a background can be discriminate | determined easily.

  Furthermore, the imaging apparatus according to the present invention may include a backrest of a chair on which the person to be imaged sits, and the background portion may be provided on the backrest.

  According to the above configuration, it is possible to realize an imaging device that captures an image of the imaging device and detects the position of the imaging subject while the imaging device is seated.

  Furthermore, the imaging apparatus according to the present invention may include a height adjusting unit that adjusts the height of the chair with reference to the position of the person to be imaged detected by the detecting unit.

  According to said structure, the height of the chair in which the to-be-imaged apparatus is sitting can be adjusted appropriately.

  Furthermore, the biological measurement booth according to the present invention includes the imaging device, a measuring device that measures the biological information of the person to be imaged, a display unit that displays the biological information measured by the measuring device, and a Adjustment that adjusts at least one position selected from the group consisting of the measurement device, the display unit, and the input unit with reference to the input unit that receives the input and the position of the person to be imaged detected by the detection unit Means.

  According to said structure, in a biometrics booth, at least 1 position selected from the group which consists of a measurement apparatus, a display part, and an input part can be adjusted appropriately.

  Further, in the biometric booth according to the present invention, the imaging unit captures the imaged person in a state of sitting with the background portion as a background, and the detection unit refers to an image captured by the imaging unit. Then, the sitting height of the person to be imaged may be detected, and the adjusting unit may adjust the position of the input unit with reference to the sitting height detected by the detecting unit.

  According to said structure, since the length of a to-be-photographed person's hand can be guide | induced from sitting height, the position of an input part can be adjusted appropriately.

  Further, the information processing apparatus according to the present invention may be realized by a computer. In this case, the information processing apparatus that realizes the information processing apparatus by the computer by operating the computer as each unit included in the information processing apparatus. An apparatus control program and a computer-readable recording medium on which the apparatus control program is recorded also fall within the scope of the present invention.

  According to one aspect of the present invention, there is an effect that the position of the person to be imaged can be accurately detected regardless of the color of the body or clothing of the person to be imaged.

It is a block diagram which shows the structural example of the principal part of the biometrics booth which concerns on Embodiment 1 of this invention. (A) is the schematic which looked at the user sitting in the biometric booth and the biometric booth from the side, (b) looked at the background area and the user arranged on the backrest surface from the front It is a schematic diagram, and (c) is a figure showing a user and a picture of a background field photoed with a camera. It is a flowchart which shows an example of the process which the biometrics booth of FIG. 1 measures a user's sitting height based on the image data which imaged a part of a user and a backrest, and adjusts the position of a display part. It is a figure which shows the example of the pattern which can be used as a background area | region. It is a figure which shows the image which image | photographed the user who exists in front of the background area | region shown to (a) of FIG. 4 with a camera. 2 is a diagram showing an example in which the background area BS1 of FIG. 2 is applied to a telephone box type system and a bed type system having other configurations different from the biometric measurement booth, and FIG. (B) is an example in which the background area is provided as the underlaying user's base.

Embodiment 1
Hereinafter, embodiments of the present invention will be described in detail.

  In one embodiment of the present invention, the information processing apparatus (detection unit) 1 is a user existing in front of a background area (background part) in which two or more color areas having different luminance and chromaticity are arranged. In the image obtained by photographing (the person to be imaged) 50, an area (an imaged person area) corresponding to the user 50 is accurately determined. For example, when a background area in which a plurality of color areas having different luminances are arranged is used, the head of the user 50 is checked by examining the continuity of the luminance of each pixel belonging to each color area included in the background area. Detect position.

  First, an example in which the information processing apparatus 1 is applied to a biological measurement booth (imaging apparatus) 100 that comprehensively supports measurement and management of biological information will be described below with reference to FIG. Explained. The biological measurement booth 100 accurately detects the position of the user 50's body (for example, the top of the head and the shoulder) from the image taken of the user 50. Then, the positions of the display unit 20 and the operation panel 30 are automatically adjusted to positions with good operability and visibility according to the sitting height and shoulder width of the user 50. The biological measurement booth 100 is only an example, and the information processing apparatus 1 can be applied to devices for various other purposes, in particular, an imaging device including an imaging unit.

  First, an example of the external appearance and schematic configuration of the biological measurement booth 100 will be described with reference to FIG. (A) of FIG. 2 is the schematic which looked at the user who is sitting in the biological measurement booth and the biological measurement booth from the side.

  Hereinafter, the information processing apparatus 1 having a communication function with the display unit (input unit) 20 and the device (measurement device) 4p and a communication function with the display unit 20, and a sitting user (imaged) For example, the living body measurement booth 100 provided with a camera (imaging unit) 107 that photographs 50 or the like is taken as an example. It is to be noted that the information processing apparatus 1 according to the present invention is a health support system capable of measuring biological information and managing biological information by each device while the user 50 is standing (without moving) or standing. You may apply to. That is, the health support system is not limited to the posture of the user 50. For example, in a health support system, it may be a telephone box type in which the user 50 is standing in a space such as a private room that does not require a large space for installation, or the user 50 on a bed or mattress. It may be a bed type that is a sleeping posture. However, since some of the measured biological information is greatly influenced by the posture of the user 50, in health care, it is desirable to measure without changing the posture when measuring biological information.

  There are no particular restrictions on the height and age of the user 50 who uses the biometric booth 100, and a wide range of age groups from adults to children can be used. If the user 50 understands the basic operation method and can use it safely, the user 50 can use the biological measurement booth 100 alone. However, when a large number of unspecified users 50 use the biometric booth 100, it is desirable to place staff supporting the user 50 near the biometric booth 100. Accordingly, it is possible to perform an appropriate treatment on the user 50 who complains of a change in physical condition during measurement of biological information.

(Configuration of the biological measurement booth 100)
The biological measurement booth 100 shown in FIG. 2A is a chair that can measure a plurality of pieces of biological information of the user 50 just by sitting and present the result on the display panel 30 so that the user 50 can confirm the result. is there. Here, the biological information may be information that each device (measuring device) 4 determines a numerical value or a measurement result, such as weight, body fat, body temperature, blood pressure, number of heartbeats, and pulse wave, for example. It may be a test result of sensory functions such as vision (sight), olfaction, hearing, and touch. The pulse wave is a method for measuring the blood flow volume of the capillaries at the fingertips and toes and examining the degree of arteriosclerosis. Note that FIG. 2A does not show all the devices 4, but only shows a device 4 p such as a pulse wave meter attached to the fingertip of the user 50 exemplarily. However, the present invention is not limited to this, and various devices 4 can be applied.

  Such biological information is measured by each device 4. The measured biological information is transmitted from each device 4 to the information processing apparatus 1. The information processing apparatus 1 converts information including the biological information transmitted from each device 4 into notification data for notifying the display unit 20 or the application. Information including biological information is displayed on the display panel 30 based on the notification data.

  The biological measurement booth 100 is a chair including a seat surface 101, a back (backrest) 102, an armrest (armrest) 103, and a footrest (footrest) 104. Between the seat surface 101 and the floor surface F, there are a support portion 108 that supports the main body of the biological measurement booth 100, and an installation member 109 that is disposed at the contact portion between the floor surface F and the main body of the biological measurement booth 100. Have.

  The height of the seat surface 101 from the floor surface F can be adjusted by a lifting function provided in the support unit 108. Thereby, the height of the seating surface 101 can be adjusted to a height that is easy to sit for users of various body types and a wide range of ages.

  The angle between the seat surface 101 and the backrest 102 defines the posture of the user 50 sitting in the biological measurement booth 100. In general, in measurement of biological information such as blood pressure, measurement in a relaxed state is preferable. Therefore, the backrest 102 is inclined backward with respect to the seat surface 101, and the posture (the posture or the posture close to the prone position) that the seat surface 101 and the backrest 102 support from the back of the user 50 to the buttocks is selected. be able to.

  As shown in FIG. 2A, the armrest 103 is connected to the support portion 108 by a connecting member 105a, for example. Moreover, the footrest 104 is connected with the support part 108 by the connection member 105b, for example.

  Each device 4 (including measurement device and device 4p) can communicate with the information processing apparatus 1 of the biological measurement booth 100, and measures biological information from the arm, hand, or fingertip of the user 50 in addition to the above-described configuration. Equipment to be used. The biological measurement booth 100 can be attached with various detachable devices 4. As a position where the device 4 is attached, a case where the armrest 103 is suitable can be considered.

  In addition, the position of the armrest may be adjusted to a position (height) (for example, a distance from the seat surface) where the shoulder of the user 50 sitting in the biological measurement booth 100 is natural. Thereby, the height of the device 4 that measures the pulse rate, blood pressure, or pulse wave can be adjusted to be substantially equal to the height of the heart of the user 50 who is the subject. .

  Since the footrest 104 is connected to the support portion 108 by the connecting member 105 b, the entire weight of the user 50 sitting in the biological measurement booth 100 is supported by the support portion 108. That is, the user 50 sitting in the biometric booth 100 is completely placed on the biometric booth 100. Then, the user 50 sitting at the biometric booth 100 can maintain a resting posture while sitting at the biometric booth 100. Various devices 4 that measure biological information from the soles, ankles, and the like of the user 50 can be installed on the footrest 104.

  The footrest 104 is not an essential component of the biological measurement booth 100. For example, when measuring the weight of the user 50 sitting in the biometric booth 100, a step (see FIG. 5) where the legs of the user 50 are separated from the floor surface F or connected to the support unit 108. You may sit down with your feet on the top.

  The support unit 108 is provided with a weight scale using a known method, and the total of the weight of a part of the biological measurement booth 100 and the weight of the user 50 sitting in the biological measurement booth 100 is measured. The The weight of the user 50 can be calculated by subtracting the weight of only the biometric booth 100 before the user 50 is seated from the measured total weight. Note that, as in a general health checkup, the amount of clothing may be corrected. For example, a value obtained by subtracting a predetermined weight (1 kg) from the measured weight as the amount of clothing may be used as the body weight. Further, as described above, when the device 4 attached to the armrest 103 is changed (replaced), the weight taking into consideration only the weight of the device 4 attached to the biological measurement booth 100 every time the device 4 is changed. May be used as the measured body weight. The support unit 108 may include a sensor that can detect the position of the center of gravity of the sitting user 50 and movement, and may determine whether the posture of the user 50 is stable. .

  The display unit 20 is a display device having a display panel 30 that displays acquired information, and is supported by a position adjustment unit (adjustment unit, height adjustment unit) 106. The position adjustment unit 106 is a member for supporting the display unit 20 and changing the position of the display unit 20. That is, the relative positional relationship between the display unit 20 and the user 50 can be adjusted by the position adjustment unit 106. The position of the display unit 20 may be adjusted by an operation by the user 50, or the biological measurement booth 100 may automatically adjust based on biological information such as the sitting height, shoulder width, and visual acuity of the user 50. Also good. Similar to the position of the display unit 20, the orientation of the display panel 30 can also be freely changed. In addition, based on the image which image | photographed 50 of users, sitting height etc. are measured, and based on the measurement result, the living body measurement booth 100 uses the position of the display part 20, the apparatus 4, etc. for this user 50 easily. The process for adjusting the position will be described in detail later.

  A touch panel (not shown) is superimposed on the display panel 30 and accepts a touch operation by the user 50. Further, the display unit 20 receives biological information measured by each device 4 or various test results, displays the received information, test results, and the like and presents them to the user 50. Details of how to use the display unit 20 in the biological measurement booth 100 will be described later.

  The biological measurement booth 100 is not an essential component, but may further include a speaker (not shown), and may play favorite music or the like so that the user 50 receiving the measurement can relax. The biometric booth 100 is not an essential configuration, but may further include a microphone (not shown), and the sitting user 50 can have a conversation with a medical staff or an operator. May be. An example of a usage method using a speaker and a microphone will be described later together with an example of a usage method in the biological measurement booth 100 when using a communication function.

(Display unit 20 and camera 107)
Next, a schematic configuration of the display unit 20 will be described. A touch panel is superimposed on at least a part of the display panel 30 of the display unit 20 included in the biological measurement booth 100, and input by a touch operation on the display panel 30 is possible. That is, the display unit 20 functions as a user interface that displays information and receives a touch operation by the user 50. The display panel 30 can also display a list of measured biological information for the user 50 sitting in the biological measurement booth 100. When the user 50 finds a measured value that is significantly different from the measured value or the past measured value, the user 50 can also instruct re-measurement by a touch operation on the display panel 30. That is, the user 50 may be configured to individually instruct measurement of biological information by each device by a touch operation on the display panel 30.

  The display unit 20 acquires notification data regarding the biological information measured by each device 4 from the information processing apparatus 1 and presents the biological information to the user 50.

  A camera 107 is provided on the display unit 20, and at least a part of the body such as the face or upper body of the user 50 sitting in the biometric booth 100 can be photographed. A part of the backrest 102 and the surface of the user 50 as well as the upper body of the user 50 can be photographed by the camera 107. Note that the entire body of the user 50 may be captured by the camera 107.

  The camera 107 is a digital camera, and is a camera module that captures an imaged person such as the user 50 sitting at the biometric booth 100 using a CCD sensor, a CMOS sensor, or the like. A camera view image, which is an image optically input through the camera 107, and shooting data obtained by shooting are output to the display unit 20 via the information processing apparatus 1. The camera 107 is not necessarily provided in the biological measurement booth 100. For example, the camera 107 may be an external device that has a communication function like each device 4, receives a control signal from the biological measurement booth 100, and can photograph in accordance with the signal. The position where the camera 107 is installed may be installed anywhere as long as the above object can be achieved.

  Image data captured by the camera 107 is used for image analysis processing in the information processing apparatus 1. For example, by analyzing image data of the user 50 sitting in the biometric booth 100, the length of a part of the body of the user 50 (for example, sitting height, height, etc.) or the state of the body (shoulder position) , Posture, etc.). The posture information may be stored in the biological measurement booth 100 so that the posture of each user 50 when sitting at the biological measurement booth 100 can be registered. According to this configuration, the posture when measuring biological information can be kept constant. Therefore, the reliability of the measured biological information can be maintained high. In addition, you may comprise so that the measurement of biometric information may not be started until an attitude | position is settled in the tolerance | permissible_range.

  If the hardness of the material of the seating surface 101 is excessively soft, it will sink deep due to the weight of the user 50, so that there is a possibility that the seat height and the like cannot be measured correctly. On the other hand, the seating surface 101 made of a hard material having almost no elasticity makes the sitting comfort worse, and the attractiveness of the biological measurement booth 100 is reduced. Therefore, although not limited thereto, it is desirable to apply a low-repulsion material to the seating surface 101 to ensure the accuracy of the measurement result without impairing the sitting comfort.

  For example, the camera 107 may use the fact that the attitude of the user 50 is not changed for a predetermined time (for example, 5 seconds) as a trigger for shooting, or to prompt the user 50 to send a signal that can be shot. A touch button such as “shooting OK” may be displayed on the display panel 30, and after the touch button is pressed, shooting may be performed after a predetermined time (for example, 2 seconds). Or, a button with the character string “Start” is displayed on the screen together with the character string “Start Healthcare Check. Touch the Start button.” The “Start” button The depression may be used as a trigger for starting shooting.

(Usage method in the living body measurement booth 100 when using the communication function)
When a medical examination is received at a medical facility such as a hospital, wait for the turn and measure the height, weight, blood pressure, etc. in order. The equipment 4 that performs each measurement is usually installed in a separate place, and it is necessary to move in order by holding a sheet for entering measurement data. On the other hand, the living body measurement booth 100 can measure the height, weight, body temperature, blood pressure, pulse wave, etc. of the user 50 while sitting on a chair. The obtained data is automatically communicated from the measured device 4 to the biological measurement booth 100, displayed on the display panel 30 of the display unit 20, and presented to the user 50.

  The display unit 20 may receive information to be displayed via the communication network from the information processing apparatus 1 of the biological measurement booth 100, or may receive information to be displayed via wireless or wired communication (local network). Also good. That is, the display unit 20 is not necessarily provided integrally with the biological measurement booth 100. For example, you may transmit to the portable terminal of the family who is going out or lives away. Thereby, the family can check the biometric information measured by the user 50. For example, the health condition of an elderly person can be confirmed by a family living in a remote place as appropriate, and when a change in the health condition occurs, it can be found and dealt with early.

  The information processing device 1 of the biological measurement booth 100 transmits information to be displayed to a plurality of display devices (including the display unit 20) via a communication network. For example, it may be configured to be able to transmit to a display device (not shown) used by a medical staff such as a doctor or nurse in a hospital away from a place where the biometric booth 100 is installed, or a family member. . Thereby, the doctor of a remote place can also confirm the measured biometric information. Therefore, the user 50 sitting in the biological measurement booth 100 can receive a diagnosis from a remote doctor based on the displayed biological information.

  A plurality of display units 20 may be provided in the biological measurement booth 100. For example, at least one display unit 20 among the plurality of display units 20 may be a display unit 20 that uses bidirectional image communication. The other display device displays an image of a doctor or the like that is a communication partner, displays measured biometric information, or displays images such as data or data provided by the doctor. Also good.

  By providing a plurality of display units 20 in this way, it is possible to consult with a doctor on a remote place via a communication network to hear the findings and receive useful advice about health. . When using bidirectional communication in this way, the position of the camera may be moved so that the face of the user 50 is photographed.

  Furthermore, remote operation from a doctor, a caregiver, or a family registered by the user 50 may be possible using the communication function described above. For example, the position of the camera 107 of the biometric measurement booth 100 and the shooting direction, the position and direction of the display device, the zoom function, etc. are remotely operated to select a site (for example, skin, eyes, tongue, fingertip, etc.) to be observed. You may make it obtain a finding. Moreover, you may comprise so that the measurement of a user's biometric information by each apparatus 4 can be started remotely. Thereby, if the user wears each device 4 used for measuring biological information as displayed on the display unit 20, measurement of the biological information is started. Therefore, it is possible to transmit biometric information necessary for health maintenance and medical checkup requested by a doctor at a remote place to the user, and prompt measurement of the biometric information.

(Main part configuration of the biological measurement booth 100)
Next, the structure of the biological measurement booth 100 provided with the information processing apparatus 1 according to the present invention will be described with reference to FIG. FIG. 1 is a block diagram illustrating a configuration example of a main part of the biological measurement booth according to the first embodiment of the present invention.

  The biological measurement booth 100 includes an information processing apparatus 1, a storage unit 2, a camera 107, and a position adjustment unit (adjustment unit, height adjustment unit) 106. In FIG. 1, members such as a communication unit, a display control unit, and each device 4 for transmitting and receiving image data and notification data including measured biological information are provided in the biological measurement booth 100. The illustration is omitted because it is not directly related.

  The information processing apparatus 1 includes an image data acquisition unit (image acquisition unit) 11, a scanning position determination unit 12, a pixel value determination unit (non-background determination unit) 13, an area determination unit (area determination unit) 14, and a provisional height line determination. Unit 15, height line determination unit 16, and operation control unit 17.

  The storage unit 2 includes threshold information 21 and a height criterion 22. The threshold information 21 defines a threshold used as a reference for luminance (or chromaticity) and continuity of pixels constituting an image obtained by photographing the user 50. The height criterion 22 defines a criterion for determining whether or not the position of the top of the user 50 is appropriate.

  The camera 107 captures the user 50 and the background area (background part) BS1. The captured image is output to the image data acquisition unit 11 of the information processing apparatus 1.

  The background region BS1 includes two or more types of color regions having different luminance or chromaticity. As an example of the background region BS1, two or more types of color regions having different luminances or chromaticities are striped, and the adjacent color regions have different luminances or chromaticities. In the following, a case where two color regions (high luminance region and low luminance region) of white as a high luminance color and black as a low luminance color are used for the background region BS1 will be described. However, the present invention is not limited to this. It is not a thing. For example, two or more color regions having different chromaticities (hue and saturation) that can be quantitatively determined for each pixel, instead of the brightness level, may be used for the background region BS1. However, it is desirable that the color areas used for the background area BS1 have greatly different luminance or chromaticity.

  Colors having greatly different chromaticities are not limited to this, but the hue difference in the a * direction (direction connecting red and green) in the L * a * b * color system or b * It can be set according to the hue difference in the direction (direction connecting yellow and blue). Here, the L * a * b * color system (also referred to as CIELAB uniform color space) is one of representative color systems, and represents each color as coordinates on the uniform color space. The uniform color space in the L * a * b * color system is represented in three dimensions: a color brightness index L *, a chrominance index a * and b *. According to the L * a * b * color system, examples of colors having greatly different chromaticities include “red” and “green”, “yellow” and “blue”. For example, in the direction of the chromatic index a * in the L * a * b * color system, red has a positive value and a large value (maximum value is 60), green has a negative value and a small value. (Minimum value is -60). Similarly, in the direction of the chromaticity index b * in the L * a * b * color system, yellow has a positive value and a large value (maximum value is 60), and blue has a negative value and a small value. (The minimum value is -60). Two or more color regions having different chromaticities (hue and saturation) such as “red” and “green”, “yellow” and “blue” can be used for the background region BS1. The pattern of the background area BS1 will be described later with a specific example.

  The image data acquisition unit 11 was photographed including part or all of the background area BS1 that is close to or in contact with the user 50 existing between the background area BS1 and the camera 107, and part or all of the user 50. Get an image. Specifically, the image data acquisition unit 11 acquires image data obtained by photographing a part of the background area BS1 of the user 50 and the backrest 102 by the camera 107. Note that when the user 50 is seated on the seating surface 101, the image data acquisition unit 11 may send an instruction to the camera 107 so as to photograph the sitting user 50 at a predetermined angle of view. . As a result, image data captured under preset imaging conditions can be acquired, so that the background region BS1 of the backrest 102 can be captured with good reproducibility. Therefore, the position and spread of the image area corresponding to the background area BS1 can be easily specified. The image data acquisition unit 11 sends the acquired image data to the scanning position determination unit 12.

  The scanning position determination unit 12 specifies an area corresponding to the background area BS1 in the image data, and determines a line (start line) to be scanned first. Further, every time scanning of each line is completed, the scanning position determination unit 12 acquires position information of the line for which scanning has been completed from the region determination unit 14. Based on the acquired position information, the scanning position determination unit 12 determines the position of the line to be scanned next.

  The pixel value determination unit 13 is a range in which the pixel value (for example, luminance or chromaticity) of each pixel of the image is defined for each color region of the background region BS1, and is outside the range of the color region corresponding to each pixel. A pixel is determined as a pixel (non-background pixel) that does not belong to the region of the background region BS1. In addition, the pixel value should just show at least one of a brightness | luminance and chromaticity.

  The pixel value determination unit 13 also scans each line, and for the luminance of each pixel on the line, the line determined to be scanned has a line having a high luminance color (corresponding to a high luminance color region). Line) or a line having a low luminance color (a line corresponding to a low luminance color region).

  When the line to be scanned is a line having a high luminance color, the pixel value determination unit 13 determines whether or not the luminance of each pixel existing on the line is equal to or higher than the first threshold value. Here, the first threshold value is a value set in advance as a lower limit value of a range (pixel value range) defined for the higher luminance color region of the background region BS1. For example, if the luminance of the higher luminance color is 100, the first threshold is set to 90 or the like. Then, the region determination unit 14 determines that a pixel whose luminance is determined to be equal to or higher than the first threshold is a pixel belonging to a region corresponding to the color of the background region BS1. On the other hand, a pixel determined to have a luminance lower than the first threshold is determined to be a pixel that does not belong to the background region BS1.

  On the other hand, when the line to be scanned is a line having a low luminance color, the pixel value determination unit 13 determines whether or not the luminance of each pixel existing on the line is equal to or lower than the second threshold value. Here, the second threshold value is a value set in advance as an upper limit value of a range (pixel value range) defined for the lower luminance color region of the background region BS1. For example, if the luminance of the lower luminance color is 1, the second threshold is set to 10. Then, the region determination unit 14 determines that the pixel whose luminance is determined to be equal to or lower than the second threshold is a pixel belonging to the region corresponding to the color of the background region BS1. On the other hand, a pixel determined to have a luminance exceeding the second threshold is determined to be a pixel that does not belong to the background region BS1.

  The first threshold value and the second threshold value are preset in the threshold information 21 of the storage unit 2.

  As described above, two or more color regions having different chromaticities (hue and saturation), such as “red” and “green”, “yellow” and “blue”, are used as the background region BS1. When used, the first threshold value and the second threshold value can be set as follows. For example, if the index value of the color of the higher chromatic index (for example, red, yellow, etc.) is 60, the first threshold can be set to 40 or the like. For example, if the value of the index of the lower chromatic index (for example, green, blue, etc.) is −60, the second threshold can be set to −40 or the like.

  Subsequently, the region determination unit 14 determines a region where pixels determined not to belong to the background region BS1 are adjacent to each other by a predetermined threshold (for example, five pixels) as a region corresponding to the user 50.

  First, the region determination unit 14 determines whether or not the number of non-background pixels continues for a line being scanned for a number equal to or greater than a threshold value. When the non-background pixels are not continuous for the threshold number or more, it is determined that the line does not belong to the area corresponding to the user 50. When the non-background pixels are continuous for the threshold value or more, the area corresponding to the user 50 is determined. It is determined that the line may belong.

  When the determination as to whether or not the line being scanned belongs to the area corresponding to the user 50 is completed, the area determination unit 14 outputs position information of the line that has been scanned to the scanning position determination unit 12. When the scanning is completed for all the lines in the background region BS1, information regarding the region determined by the region determination unit 14 is output to the temporary height line determination unit 15.

  The provisional height line determination unit 15 determines the line as the provisional height line if the pixel determined to be likely to belong to the region corresponding to the user 50 is a line that continues for the third threshold value or more. . Here, when the temporary height line is outside a predetermined range that defines the position of the assumed head height, the temporary height line is discarded. Thereby, it is possible to avoid erroneous detection of an impossible position as the head height.

  The height line determination unit 16 has a relative positional relationship between the temporary height line determined on the high-luminance background side of the background region BS1 and the temporary height line determined on the low-luminance background side of the background region BS1. Based on the above, any one of the temporary height lines is determined as a detected height line. Thereby, the temporary height line at a position closer to the top of the user 50 can be determined as the detected height line.

  The operation control unit 17 controls the operation of the position adjustment unit 106 so as to adjust the relative positional relationship between the display unit 20 and the user 50 according to the position of the detected height line. The operation control unit 17 is not limited to adjusting the position of the display unit 20. For example, in order to adjust the distance between the user 50 and the display unit 20, the instruction unit 108 may adjust the position of the seat surface 101 in a direction (including the Z direction) substantially parallel to the floor surface F. The positions of the armrest 103, the footrest 104, etc. may be adjusted. Further, the position of each device 4 provided in the armrest 103 or the like, the position of the camera 107, or the like may be adjusted.

  The position adjustment unit 106 adjusts the positions of the display unit 20, the device 4, the armrest 103, the footrest 104, the seat surface 101, and the like.

  Thereby, the living body measurement booth 100 can be provided with a mechanism for adjusting the position of the display unit 20 and the position and height of the seating surface 101 according to the physique of the user 50 (sitting height, shoulder width, etc.). The biological measurement booth 100 can adjust the positions of the display unit 20 and the seating surface 101 based on the image captured by the camera 107 without using a special sensor. Thus, the touch-operated display panel 30 can be adjusted within a range that can be reached by the user 50, so that it is easy to see a camera image with a doctor in a remote place, and it is easy to hear the sound. Therefore, voice communication and video communication using the communication function (not shown) of the biological measurement booth 100 can be used smoothly.

(About background area BS1)
Next, a configuration for measuring the sitting height of the user 50 sitting in the biological measurement booth 100 and adjusting the relative position between the user 50 and the display unit 20 without requiring an operation by the user 50 is shown in FIG. This will be described with reference to (b) and (c) of 2. 2B is a schematic view of the background area BS1 and the user 50 arranged on the surface of the backrest 102 as viewed from the front, and FIG. 2C is a schematic view of the user 50 and the background area BS1 taken by the camera 107. It is a figure which shows an image.

  As shown in FIG. 2A, the backrest 102 and the background area BS <b> 1 extend to a position higher than the uppermost part of the head of the user 50. Further, the backrest 102 is wider than the shoulder width of the user 50. Therefore, an image captured by the camera 107 so that at least the entire head and both shoulders of the user 50 are within the frame includes a part of the background region BS1 behind the user 50.

  In the example shown in FIG. 2B, the surface of the backrest 102 disposed behind the seated user 50 has a band region (line) of a high luminance color region (for example, white) and a low luminance. A background region BS1 having a pattern (horizontal striped pattern) alternately arranged in stripes in the horizontal direction (X direction in the drawing) of the color region (for example, black) of the first color region. The background region BS1 does not have to be arranged on the entire surface (front surface) of the backrest 102, and is arranged in the image taken of the user 50 at a position included in the image as a background behind the user 50. Just do it.

  As shown in FIG. 2C, in the image in which the background area BS1 behind the user 50 is photographed together with the user 50, the background area is composed of, for example, 1600 pixels in both the X direction and the Y direction. . In the example shown here, there are 16 high-luminance lines and low-luminance lines, and each line has a width (thickness) of 50 pixels. It should be noted that the number of pixels in the image obtained by photographing the background region BS1, the shape of the background region BS1 in the image, and the like can be arbitrarily set, and are not limited to the example shown in FIG.

  In the example shown in FIGS. 2B and 2C, the widths of the high luminance line and the low luminance line (when the background region BS1 is a horizontal stripe pattern, the thickness in the Y direction) are substantially equal. Although shown, it is not limited to this, The width (thickness) of each line may be arbitrary. For example, in the background area BS1 where the head of the user 50 is located, the width (thickness) of each line may be finer than other parts. As a result, the sitting height of the user 50 can be measured more accurately.

  The background region BS1 is not limited to the patterns shown in FIGS. 2B and 2C. For example, the background region BS1 is a pattern (vertical striped pattern) alternately arranged in a stripe pattern in the height direction (X direction) of the backrest 102, for example. ) (Not shown). For example, when measuring the shoulder width of the user 50 taken as described later, the vertical stripe pattern may be more effective than the horizontal stripe pattern. On the other hand, in order to accurately measure the sitting height, a horizontal stripe pattern is more suitable than a vertical stripe pattern.

  In order to reduce the measurement error of the sitting height and the shoulder width, it is desirable that the boundary between the lines of the background region BS1 is substantially a straight line, but the present invention is not limited to this. For example, a wavy line with a small amplitude may be used. For example, the boundary between the high-luminance color portion and the low-luminance color portion may not be a straight line depending on the material of the background region BS1 (such as the presence or absence of fine irregularities), the sewing and dyeing method, etc. obtain.

  Next, a process of measuring the sitting height of the user 50 sitting at the biological measurement booth 100 and moving the display unit 20 to a position where the user 50 can easily perform a touch operation on the display panel 30 while sitting. This will be described with reference to FIG. 2 (c) and FIG. 3 shows an example of processing in which the living body measurement booth 100 of FIG. 1 measures the sitting height of the user 50 and adjusts the position of the display unit 20 based on image data obtained by capturing a part of the user 50 and the backrest 102. It is a flowchart to show.

  In S101 (image acquisition step), the image data acquisition unit 11 acquires image data obtained by capturing a part of the background area BS1 of the user 50 and the backrest 102 by the camera 107. The image data acquisition unit 11 sends the acquired image data to the scanning position determination unit 12.

  In S102, the scanning position determination unit 12 specifies an area corresponding to the background area BS1 in the image data, and determines a line (start line) to be scanned first. Here, the case where the start line is the line L (1) shown in FIG. 2C will be described as an example, but the present invention is not limited to this. For example, when the user 50 is a child, the line L (n) located on the lowermost side of the background area BS1 is closer to the head and shoulders of the user 50 than the line L (1). The line L (n) may be determined as the start line.

  In S103, the pixel value determination unit 13 determines whether the line L (1) determined as the scanning target for the luminance of each pixel is a line corresponding to a high luminance color region or a line corresponding to a low luminance color region. It is determined whether it is. This determination may be made based on, for example, the luminance of the pixels in the end region of the background region BS1 of the line L (1). In FIG. 2C, it is determined that the line L (1) corresponds to a high luminance color region (YES in S103).

  If it is determined that the line is a high-luminance line, then in S104 (non-background determination step), the pixel value determination unit 13 determines the luminance of each pixel existing on the line L (1) to be scanned. It is determined whether or not it is equal to or greater than the first threshold.

  The region determination unit 14 determines that a pixel whose luminance is determined to be equal to or higher than the first threshold (YES in S104) is a pixel belonging to a region corresponding to the color region of the background region BS1. On the contrary, it is determined that a pixel whose luminance is determined to be lower than the first threshold (NO in S104) is a pixel that does not belong to the background region BS1 (non-background pixel).

  Subsequently, in S105 (region determination step), for the pixel determined to be a pixel that does not belong to the background region BS1 (NO in S104), the region determination unit 14 has a predetermined number of pixels (for example, five pixels). It is further determined whether or not it is continuous. When the predetermined number or more of non-background pixels are not continuous (NO in S105), it is determined that the line belongs to the background area BS1 (S106). On the other hand, when a predetermined number or more of non-background pixels are continuous (YES in S105), it is determined that the line does not belong to the background region BS1 (S107).

  When the determination as to whether or not it belongs to the background area BS1 is completed in S104 and S105, it is next determined in S112 whether or not the line to be scanned has reached the bottom of the background area BS1. This determination is made, for example, by the operation determination unit 12 that has acquired information indicating that the determination is completed from the region determination unit 13.

  When the scanning of the line L (1) has been completed and has not yet reached the bottom of the background area BS1 (NO in S112), the scanning determination unit 12 determines the line to be scanned next. In this example, the line L (2) is determined as the line to be scanned next.

  In S103, the pixel value determination unit 13 determines whether the line L (2) determined as the object to be scanned for the luminance of each pixel is a line having a high luminance color or a line having a low luminance color. judge. In FIG. 2C, it is determined that the line L (2) has a low luminance color (NO in S103).

  If it is determined that the line is a low luminance line, then in S108 (non-background determination step), the pixel value determination unit 13 determines the luminance of each pixel existing on the line L (2) to be scanned. It is determined whether or not the second threshold value or less. Here, the second threshold value is a value set in advance as the upper limit value of the range defined in the lower luminance color region of the background region BS1. For example, if the luminance of the low luminance color region is 1, the second threshold is set to 10 or the like.

  The region determination unit 14 determines that a pixel whose luminance is determined to be equal to or lower than the second threshold (YES in S108) is a pixel belonging to a region corresponding to the color region of the background region BS1. On the contrary, it is determined that a pixel whose luminance is determined to be higher than the second threshold (NO in S108) is a pixel that does not belong to the background region BS1.

  Next, in S109 (region determination step), for the pixel determined to be a pixel (non-background pixel) that does not belong to the background region BS1 (NO in S108), the region determination unit 14 has a predetermined number of pixels ( For example, it is further determined whether or not the pixel is continuous. When the predetermined number or more of non-background pixels are not continuous (NO in S109), it is determined that the line belongs to the background area BS1 (S110). On the other hand, when a predetermined number or more of pixels that do not belong to the background region BS1 are continuous (YES in S109), it is determined that the line does not belong to the background region BS1 (S111).

  When the determination as to whether or not it belongs to the background area BS1 is completed in S108 and S109, it is next determined in S112 whether or not the line to be scanned has reached the bottom of the background area BS1.

  When the scanning of the line L (2) has been completed and has not yet reached the bottom of the background area BS1 (NO in S112), the scanning determination unit 12 determines the line to be scanned next. In this example, the line L (3) is determined as the line to be scanned next. In this way, the scanning determination unit 12 determines the line located immediately below the line where the scanning is completed as the line to be scanned next.

  When scanning of the lowermost line L (n) of the background area BS1 is completed (YES in S112), it is then determined in S114 that the line corresponding to the high-luminance color area does not belong to the background area BS1. And the line determined to not belong to the background area BS1 among the lines corresponding to the low-luminance color area with respect to the scanned direction (for example, the X direction (lateral direction) in FIG. 2C). It is then determined whether or not there is a third threshold value (for example, for five pixels) or more in a substantially vertical direction. That is, in each line L, it is determined how long a line determined not to belong to the background region BS1 is continuous in the Y direction. Here, when the width of each line L in the Y direction (vertical direction) is y, the third threshold is set to a value smaller than y.

  If the line determined not to belong to the background region BS1 in S108 and S109 is a line that is not continuous in the Y direction for the third threshold or more (NO in S114), the temporary height line determination unit 15 determines the temporary height. The line is excluded from the candidates for the line L determined as the line H (S115).

  On the other hand, if the line determined not to belong to the background region BS1 is a line that is continuous for the third threshold or more (YES in S114), the temporary height line determination unit 15 sets the line to the temporary height in S116. Decide as a line. At this time, if the luminance of the pixel corresponding to the background area BS1 of the temporary height line is high, the line is determined as the temporary height line H1, and the luminance of the pixel corresponding to the background area BS1 of the line is determined. If the luminance is low, the line is determined as the provisional height line H2.

  Next, the height line determination unit 16 includes a temporary height line H1 determined on the high-luminance background side of the background region BS1, and a temporary height line H2 determined on the low-luminance background side of the background region BS1. Is determined as a detection height line (line L located at the top of the user 50) via S117 to S119. First, in S117, the height line determination unit 16 determines the distance from the high luminance side temporary height line H1 to the seating surface 101 determined by the temporary height line determination unit 15 and the low luminance side temporary height line H2. It is determined whether or not the distance to the seating surface 101 is within a predetermined range defined in advance in the height criterion 22. Here, the predetermined range is a range assumed as the position of the head (the top of the head) of the sitting user 50.

  If the distance from the seating surface 101 is within the predetermined range in both the temporary height line H1 and the temporary height line H2 (YES in S117), the temporary height line H1 and the temporary height line H2 in S119. Of these, the temporary height line closer to the line where scanning is started is determined as the detected height line. On the other hand, if the distance from the seating surface 101 is within the predetermined range in only one of the temporary height line H1 and the temporary height line H2 (NO in S117), it is determined that the distance is within the predetermined range in S118. The provisional height line that has been set is determined as the detection height line. If the distance from the seat surface 101 is not within the predetermined range (not shown) in any of the temporary height line H1 and the temporary height line H2 (not shown), the process returns to S114, and the temporary height line determination process is performed. Try again.

  Next, in step S120, the motion control unit 17 displays the display unit 20 (and each of the display units 20) in an appropriate position determined based on the arm length that can be estimated from the sitting height of the user corresponding to the position of the detected height line. The position adjustment unit 106 is controlled so that the device 4 or the like moves. For example, the height line determination unit 16 outputs information related to the detected height line to the operation control unit 17, and the operation control unit 17 adjusts the position so as to adjust the position of the display unit 20 according to the detected height line. The unit 106 is controlled. By determining the detection height line, it is possible to roughly estimate the sitting height of the user 50 or information related to the sitting height.

  For example, it is known that the ratio between human shoulder width, sitting height, arm length, and the like can be obtained as a value within a statistical range, although there are individual differences. Therefore, by obtaining the approximate seat height, the arm length, height, shoulder width, etc. of the user 50 can be estimated as values having a certain degree of certainty. In addition, more appropriate estimation can be performed by further considering the gender and age of the user 50. For this reason, a configuration may be provided in which the age and sex of the user 50 are input before the shooting, or the registered user 50 information is appropriately referred to.

(Temporary height line and detection height line)
Below, a temporary height line and a height line are demonstrated in detail using (c) of FIG. The luminance of all the pixels included in each line is scanned, but each line such as the line L (k) shown in FIG. 2C is the position of the pixel that has been scanned along the X direction. The representative of is shown in the figure. That is, the broken line shown as the line L (k) is merely an example of one of the pixels scanned and determined for all the pixels included in the corresponding low-luminance line L (k). For example, when the width y of the line L (k) is 50 pixels, scanning is performed with respect to the luminance of 50 pixels on adjacent lines as indicated by the line L (k).

  When scanning in the X direction for each of the lines L (k−1), L (k), and L (k + 1) shown in FIG. 2C, the pixels on the line L (k−1) are Since all the pixels have a luminance equal to or higher than the first threshold value, in S105 described above, the pixels are determined to belong to the background region BS1. On the other hand, the line L (k) and the line L (k + 1) include the head of the user 50 existing closer to the camera than the background region BS1 in the image. Therefore, the line L (k) includes pixels that are determined not to belong to the background region BS1 in S109 described above (for example, pixels between the boundary B1 and the boundary B2). The line L (k + 1) also includes pixels that are determined not to belong to the background region BS1 in S105 described above (for example, pixels between the boundary B3 and the boundary B4).

  Next, in S114 described above, it is determined whether or not a line including pixels determined to not belong to the background region BS1 of the line L (k) is continuous in the Y direction by a third threshold value or more. For example, if y is 50 pixels and the third threshold value is set to 5 pixels (for example, 0.1 × y may be set), the line L (k) and the line L ( k + 1) is a line including pixels determined not to belong to the background region BS1. The illustrated line L (k) and line L (k + 1) are continuous in the Y direction by the third threshold or more (YES in S114 described above). Therefore, in S116, the line L (k) is determined as the temporary height line H2, and the line L (k + 1) is determined as the temporary height line H1.

  In S117 and S118, the temporary height line H2 (that is, the line L (k)) that is the temporary height line whose distance from the seating surface 101 is within a predetermined range and closer to the start line L (1). Is determined as the detected height line. The distance between the line L (k) determined as the detected height line and the seating surface 101 may be used as a measured value of the seating height of the user 50, or the line L (1) at the upper end of the backrest 102. May be calculated by subtracting the distance between the line L (1) and the line L (k) from the height of the backrest 102.

  As described above, when a line including pixels determined not belonging to the background area BS1 but belonging to the area corresponding to the user 50 (the person to be imaged) is continuous in the Y direction for the third threshold value or more, A position where the line continuation is started is assumed to be a provisional height line H. And the temporary height line H which exists in the position where the height of a Y direction is the highest among the temporary height lines H in the range assumed as a user's 50 head position is determined as a detection height line.

  The position of the top of the head can be determined by this method, and the display unit 20 can be moved to a position where it is easy for the user 50 to see and the arm can be extended and a touch operation can be easily performed on the display panel 30. Considering the obtained sitting height of the user 50, the arm length of the user 50 and the like can be estimated, so that the operation control unit 17 can appropriately adjust the position of the display unit 20. Accordingly, the position of the display unit 20 is a position that appropriately controls the position adjustment unit 106 and takes the user's 50 eyes into consideration, and the user 50 extends the arm with respect to the display panel 30 and performs a touch operation. It can be automatically adjusted to a position where it can be done comfortably. Therefore, in order to adjust the position of the display unit 20, the user 50 only needs to sit in the biological measurement booth 100 and does not need to perform a special operation.

(Application to shoulder width measurement)
As described above, the shoulder width of the user 50 can be measured by using the determination method for pixels determined not to belong to the background region BS1. For example, in FIG. 2C, the distance (number of pixels) between the boundary B5 and the boundary B6 corresponding to the width of the neck of the user 50 and the boundary B7 and the boundary B8 corresponding to the shoulder width of the user 50 A distance (number of pixels) W1 is obtained. In this way, a line corresponding to the position of the shoulder of the user 50 can be determined based on pixels that are determined not to belong to the background region BS1 being continuous along the X direction. In the example shown in (c) of FIG. 2, a line in which a predetermined number or more of pixels determined not to belong to the background region BS1 are continuous, and a line closer to the line L (k) corresponding to the top is selected. It can be determined as a line corresponding to the position of the shoulder. Then, the shoulder width of the user 50 can be measured based on the distance between the boundary B7 and the boundary B8 of the line.

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIGS. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. FIG. 4 is a diagram illustrating an example of a pattern that can be used as a background region. In order to simplify the description, a case where two types of colors, a high luminance color region and a low luminance color region are used is shown, but the present invention is not limited to this, and two or more color regions are used. The background area used may be used. Further, as described above, a plurality of colors having different hues and saturations may be applied to the background region without being limited to the luminance.

  In the above-described embodiment, a striped pattern (stripe pattern) in which lines of a high-brightness color region and a low-brightness color region are alternately arranged along the horizontal direction (X direction) is formed on at least a part of the backrest 102. An example having the background region BS1 has been described. However, the background area pattern is not limited to this striped pattern. In the embodiment described below, examples of other patterns that can be used as the background area will be given, and an example of the flow of processing for measuring the sitting height of the user 50 using this background area will be described.

  Like the background area (background) BS2 shown in FIG. 4A, the lines of the high-luminance color area and the low-luminance color area are in the horizontal direction (X direction) and the height direction of the backrest 102 (Y direction). ) May be a lattice pattern. Although not shown, a pattern in which a high-luminance color region and a low-luminance color region are arranged like a checkered pattern (checker pattern) may be used. A method for measuring the sitting height and shoulder width of the user 50 in the biological measurement booth 100 including the background region BS2 having a lattice pattern as shown in FIG. 4A will be described in detail later.

  In addition, the background area pattern may be a houndstooth (check) pattern or the like, or a background area BS3 having a pattern as shown in FIG. In the background region BS3 in FIG. 4B, two or more types of color regions having different luminance or chromaticity are alternately arranged in the first direction and the second direction substantially orthogonal to the first direction. doing. A specific example of the background region BS3 is a checkered pattern in which high-luminance color regions and low-luminance color regions are alternately arranged. Further, a background region BS3 as shown in FIG.

  The background area BS3 as shown in FIG. 4B includes a band-like area in which high-luminance color areas and low-luminance color areas are alternately arranged in the Y direction. Then, this band-like region is arranged with no gap in the X direction while shifting by an arbitrary distance in the Y-axis direction. Therefore, when scanning is performed for performing pixel determination along a line parallel to the X direction in the image in which the background region (background) BS3 shown in FIG. 4B is captured, the luminance of the pixel in any scanning The high luminance and the low luminance alternate with each other by a predetermined interval (x). As shown in FIG. 4B, the uppermost line (corresponding to L (1) in FIG. 2C) and the lowermost line (L (n) in FIG. 2C). May correspond to a line composed only of high-luminance or low-luminance colors.

(Temporary height line and detection height line)
Hereinafter, the process of determining the temporary height line and the height line using the background region BS2 shown in FIG. 4A will be described with reference to FIG. FIG. 5 is a view showing an image obtained by photographing the user 50 existing in front of the background area BS2 shown in FIG. In addition, although the brightness | luminance of all the pixels contained in each line of the width | variety y is scanned, this scanning is performed along the direction parallel to a X direction, although it is not limited to this, as shown in the figure. Shall. In the background region BS2, two or more types of color regions having different luminance or chromaticity are arranged in a grid pattern.

  Each line such as the line L (m) shown in FIG. 5 illustrates a representative pixel position scanned along the X direction. In other words, the broken line indicated as the line L (m) is merely an example of one of the pixels scanned and determined for all the pixels included in the corresponding low-luminance line L (m). For example, when the width y of the line L (m) is 50 pixels, scanning is performed for the luminance of 50 pixels on adjacent lines as shown by the line L (m).

  In FIG. 5, a user 50 wearing a white hat on the head and wearing clothes of horizontal stripes (stripes parallel to the Y direction) in which high-luminance color areas and low-luminance color areas are alternately arranged. Is shown. The pixel value determination unit 13 scans in the X direction for the luminance of the pixels on each of the lines L (m), L (m + 1), and L (m + 2). Pixels on the line L (m) are determined as pixels that do not belong to the background region BS2 at the boundaries B9 and B10. This is because the pixels on the line L (m) on the background region BS2 are regions having different luminances alternately, for example, 50 pixels with high luminance followed by 50 pixels with low luminance. Contains.

  The line L (m) to the line L (m + 2) include the head of the user 50 existing closer to the camera than the background area BS2. Therefore, the line L (m) includes pixels that are determined not to belong to the background region BS2 (for example, pixels between the boundary B9 and the boundary B10). The line L (m + 1) also includes pixels that are determined not to belong to the background region BS2 (for example, pixels between the boundary B11 and the boundary B12). Then, in the boundary B9 and the boundary B10, the pixel arrangement pattern in which the areas having different luminance alternately, which is the pattern of the line L (m), is interrupted by the user 50 existing in front of the background area BS2. Has been. Similarly, the line L (m + 2) includes pixels that are determined not to belong to the background region BS2 (for example, pixels between the boundary B13 and the boundary B14). The same applies to the boundary B11 and boundary B12 of the line L (m + 1) and the boundary B13 and boundary B14 of the line L (m + 2).

  Next, for a line including pixels that are determined not to belong to the background area BS1 of the line L (m) and belong to the area corresponding to the user 50 (the person to be imaged), the line is third in the Y direction. It is determined whether or not the threshold is continuous. For example, if y is 50 pixels and the third threshold value is set to 5 pixels (for example, 0.1 × y may be set), lines L (m) to L (m + 2 ) Including pixels determined not to belong to the background region BS1, and all of them are continuous for a third threshold (for example, five pixels) or more. Accordingly, the line L (m) is determined as the temporary height line H1, the line L (m + 1) as the temporary height line H2, the line L (m + 2) as the temporary height line H3, and so on.

  The temporary height line H1 (that is, the line L (m)), which is the temporary height line closest to the start line L (1) and whose distance from the seating surface 101 is within a predetermined range, is the detected height line. As determined. The distance between the line L (m) determined as the detection height line and the seating surface 101 may be used as a measured value of the seating height of the user 50, or the line L (1) at the upper end of the backrest 102. May be calculated by subtracting the distance between the line L (1) and the line L (m) from the height of the backrest 102.

  Next, a process for measuring the shoulder width of the user 50 will be described with reference to FIG. In the scanning of the line L (t), since the background region BS2 and the color of clothes at the corresponding position of the user 50 are low luminance colors, the position of the shoulder cannot be determined well. However, the shoulder width of the user can be measured by scanning the line L (t + 1) and the line L (t + 2). The distance (number of pixels) W2 between the boundary B15 and the boundary B16 in the line L (t + 1) can be determined as the shoulder width of the user 50.

  Thus, even if the user 50 is wearing clothes, a hat, etc. having the same brightness as the background area BS2, the user 50 has a pattern like the background area BS2, so It is possible to effectively determine the area of the user 50 and to measure the sitting height, shoulder width, and the like.

  Thereby, based on information such as the height and shoulder width of the user 50, the display unit 20 (or bed) can be moved to a position where it is easy for the user 50 to view and where the user can easily touch the display panel 30 by extending his / her arm. . Considering the obtained sitting height of the user 50, the arm length of the user 50 and the like can be estimated, so that the operation control unit 17 can appropriately adjust the position of the display unit 20. Accordingly, the position of the display unit 20 is a position that appropriately controls the position adjustment unit 106 and takes the user's 50 eyes into consideration, and the user 50 extends the arm with respect to the display panel 30 and performs a touch operation. It can be automatically adjusted to a position where it can be done comfortably.

[Modification]
The background areas BS1 to BS3 are combined with a display for displaying the background areas BS1 to BS3 on the backrest 102 so that the background area displayed by the display control unit (not shown) included in the biological measurement booth 100 is controlled. It may be configured. The background area displayed on the display is stored in advance in the storage unit 2, and the display control unit selects an appropriate background area from the storage unit 2. An example of a specific processing flow will be described below.

  The image data acquisition unit 11 acquires information including the luminance or chromaticity of colors included in the hat, hair, clothes, and the like of the user 50 in advance. For example, the image data acquisition unit 11 first acquires an image temporarily captured by the camera 107 from the user 50. A predetermined background area is used for this temporary photographing. Next, the scanning position determination unit 12 determines a plurality of scanning positions or pixel positions set in advance from the captured provisionally captured images as sampling positions. The sampling position is not limited to this, but may be a plurality of areas along a line parallel to the Y direction passing through substantially the center of the backrest 102. Thereby, a part of the top of the user 50 who sits down (head hair and hat), a jacket, etc. can be included in the scanning range.

  The pixel value determination unit 13 checks the luminance and chromaticity of each pixel at the determined sampling position.

  A background area determination unit (background selection means) (not shown) selects a background area that includes a color in which at least one of the luminance and / or chromaticity of the color included in the user 50 is different. Specifically, the background region determination unit estimates the luminance and chromaticity of the colors included in the user's 50 hair, hat, and clothes based on the luminance and chromaticity distribution detected at the sampling position. Then, from the background area (not shown) stored in the storage unit 2, the background area image data (background image) that does not include the estimated luminance and chromaticity or has the lowest ratio is selected. To the display control unit (not shown).

  The display control unit controls the background region image data selected by the background region determination unit to be displayed on the display.

  According to this configuration, it is possible to use various background areas that avoid colors that are in common with the brightness and chromaticity of colors such as the hair, hat, and clothes of the user 50. Therefore, it becomes possible to correspond to the user 50 of various hair and clothes.

[Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIG. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted. FIG. 6 is a diagram showing an example in which the background area BS1 of FIG. 2 is applied to a telephone box type system 200 and a bed type system 300 having other configurations different from the biological measurement booth 100. FIG. This is an example in which BS1 is provided behind the standing user 50, and (b) is an example in which the background area BS1 is provided as an underlay for the lying user 50. The information processing apparatus 1 according to the present invention is applied to the telephone box type system 200 and the bed type system 300, and each system has at least the main configuration shown in FIG. In order to simplify the description, the case where two kinds of colors, a high-luminance color and a low-luminance color, are used. However, the present invention is not limited to this, and a background using two or more colors is used. It may be a region. Further, as described above, a plurality of colors having different hues and saturations may be applied to the background region without being limited to the luminance.

  In the example illustrated in FIG. 6, the case where the background region BS1 is photographed around the whole body from the leg portion to the head portion of the user 50 is illustrated, but the present invention is not limited thereto.

  As shown in FIGS. 6A and 6B, at least a part of the user 50 that is closer to the camera 107 than the background area BS1 and the background area BS1 behind the user 50 is obtained by the camera 107. Taken. In any case, the photographed image is an image as shown in FIG. Therefore, measurements such as the height, sitting height, and shoulder width of the user 50 can be performed. However, when measuring the height of the user 50 in the supine position, the system 200 includes the floor in the standing position at a position where the legs of the user 50 are naturally extended on the bed on the background area BS1. It is desirable to provide a member G that defines a position corresponding to the surface F. Alternatively, in addition to the upper body of the user 50, the foot may be photographed, the position of the top of the head may be determined from the image of the upper body, and the position of the toe may be determined from the image of the foot.

  Thereby, based on information such as the height and shoulder width of the user 50, the display unit 20 (or bed) can be moved to a position where it is easy for the user 50 to view and where the user can easily touch the display panel 30 by extending his / her arm. . Considering the obtained sitting height of the user 50, the arm length of the user 50 and the like can be estimated, so that the operation control unit 17 can appropriately adjust the position of the display unit 20. Accordingly, the position of the display unit 20 is a position that appropriately controls the position adjustment unit 106 and takes the user's 50 eyes into consideration, and the user 50 extends the arm with respect to the display panel 30 and performs a touch operation. It can be automatically adjusted to a position where it can be done comfortably.

[Example of software implementation]
The control blocks of the information processing apparatus 1 (in particular, the image data acquisition unit 11, the scanning position determination unit 12, the pixel value determination unit 13, the region determination unit 14, the temporary height line determination unit 15, and the height line determination unit 16). Alternatively, it may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or may be realized by software using a CPU (Central Processing Unit).

  In the latter case, the information processing apparatus 1 includes a CPU that executes instructions of a program that is software that implements each function, and a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by a computer (or CPU). Alternatively, a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) that expands the program, and the like are provided. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave in which the program is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

  The present invention can be used for an information processing apparatus that determines an area of a person to be imaged in an image of the person to be imaged.

1 Information processing device (detection means)
DESCRIPTION OF SYMBOLS 11 Image data acquisition part 12 Scan position determination part 13 Pixel value determination part 14 Area | region determination part 15 Temporary height line determination part 16 Height line determination part 17 Operation control part (Adjustment means, height adjustment means)
100 Biometric booth (imaging device)
102 Backrest 106 Position adjustment unit (adjustment means, height adjustment means)
107 Camera (imaging part)
BS1, BS2, BS3 Background area (background part)

Claims (17)

A background portion in which two or more color regions having different brightness and chromaticity are arranged, and
An imaging unit that images the person to be imaged with the background as a background;
An imaging apparatus comprising: a detecting unit that detects the position of the person to be imaged with reference to an image captured by the imaging unit.   The detection means estimates whether each pixel is a pixel corresponding to the background portion by referring to a pixel value indicating at least one of luminance and chromaticity of each pixel of the image, and refers to the estimation result. The imaging apparatus according to claim 1, wherein the position of the person to be imaged is detected.   The detection means determines that the pixel is a non-background pixel when the pixel value of each pixel of the image is outside the pixel value range defined for each color region of the background portion corresponding to each pixel. Then, a region where the non-background pixels are continuous for a number equal to or greater than a threshold value is determined as an imaged person region corresponding to the imaged person, and the position of the imaged person region in the image is referred to The imaging apparatus according to claim 1, wherein the position of the imaging device is detected.   The imaging apparatus according to any one of claims 1 to 3, wherein the arrangement of the color regions in the background portion forms a repetitive pattern.   5. The imaging apparatus according to claim 1, wherein each of the color regions is striped and is adjacent to a color region having at least one of luminance and chromaticity different from each other. The detection means determines that the pixel is a non-background pixel when the pixel value of each pixel of the image is outside the pixel value range defined for each color region of the background portion corresponding to each pixel. Then, a region where the non-background pixels are continuous for a number equal to or greater than a threshold value is determined as an imaged person region corresponding to the imaged person, and the position of the imaged person region in the image is referred to Detects the position of
Each of the color areas extends in the horizontal direction,
The detection means detects the position of the person to be imaged with reference to the position of the person to be imaged area located at the uppermost position within a predetermined range in the area to be imaged. Item 6. The imaging device according to Item 5.   The imaging apparatus according to any one of claims 1 to 4, wherein the arrangement of the color regions in the background portion is a lattice shape.   Color regions having at least one of luminance and chromaticity are alternately arranged in a first direction defined in the background portion and a second direction substantially orthogonal to the first direction. The imaging device according to any one of claims 1 to 4. The background part can switch the background image,
Obtaining information including at least one of luminance and chromaticity of a color included in the imaged person, and a background image including a color in which at least one of luminance and chromaticity is different from the color included in the imaged person, The imaging apparatus according to claim 1, further comprising background selection means for displaying on the background portion.   The two or more types of color areas include a low-brightness area having a lower brightness than other color areas and a high-brightness area having a higher brightness than other color areas. The imaging apparatus according to any one of 9. The backrest of the chair where the person to be imaged sits is provided,
The imaging apparatus according to claim 1, wherein the background portion is provided on the backrest.   The imaging apparatus according to claim 11, further comprising a height adjustment unit that adjusts a height of the chair with reference to the position of the person to be imaged detected by the detection unit. The imaging device according to any one of claims 1 to 12,
A measuring instrument for measuring the biological information of the person to be imaged;
A display unit for displaying biological information measured by the measuring device;
An input unit for receiving an input from the person to be imaged;
Adjustment means for adjusting at least one position selected from the group consisting of the measurement device, the display unit, and the input unit with reference to the position of the person to be imaged detected by the detection unit. A biometric booth characterized by that. The imaging unit captures the imaged person in a state of sitting with the background as a background,
The detection means refers to the image captured by the imaging unit, detects the sitting height of the person being imaged,
The living body measurement booth according to claim 13, wherein the adjustment means adjusts the position of the input unit with reference to the seat height detected by the detection means. An imaging step of imaging a person to be imaged with a background portion in which two or more types of color regions having different luminance and chromaticity from each other are arranged;
And a detection step of detecting the position of the person to be imaged with reference to the image captured in the imaging step.   A control program for causing a computer to function as the imaging device according to any one of claims 1 to 12 or the biological measurement booth according to claim 13 or 14, wherein the computer functions as each of the above-described means. Control program.   The computer-readable recording medium which recorded the control program of Claim 16.

Images