JP2009299241A - Body size measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body size measuring device capable of easily measuring accurate body size. <P>SOLUTION: This body size measuring device includes an imaging device which images the body of a person to be measured, a display screen 11a which displays an image photographed by the imaging device, standard indications 21 which are set at least on three sites so as to avoid all the sites to be in the same straight line on a plane set on the back of a person to be measured, and whose intervals each are already known, and standard frames 22 which are set corresponding to the individual standard indications 21 on the display screen 11a. Furthermore, the device includes a calculating part which calculates the size of the body based on the sizes between actual standard indications 21, and the sizes between the standard indications 21 in an image of the body photographed by placing each of the standard indications 21 on the inside of the corresponding standard frame 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a photographing device for photographing the body of a measurement subject, a display screen for displaying an image photographed by the photographing device, and a computing unit for computing the dimensions of the body based on the image obtained by photographing the body. And a body dimension measuring apparatus.

  Conventionally, as this type of body size measuring device, for example, a cross-shaped calibration device having a known size is photographed, and calibration is performed so that the size of the calibration device on the image corresponds to the size of the actual calibration device. Is known to do. In this body dimension measuring apparatus, after calibration, the dimensions of each part of the body of the measurement subject are determined based on the dimensions and actual dimensions on the image of the calibration apparatus and the dimensions on the image of the body of the measurement target. Calculation is performed (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2003-49307 (paragraphs 0062 and 0063 and FIG. 1)

  However, in the above-described body dimension measuring device, the camera position is fixed at the measurement site of the measurement subject's body at the time of imaging the calibration device or the measurement subject's body, but the position of the camera is not constant, It was difficult to face the camera to the subject. In this case, when a normal user takes a picture, the picture is taken with the camera tilted. Therefore, since the photographed image is distorted, an accurate body dimension cannot be measured. Therefore, in order to measure an accurate body dimension, correction for removing distortion is necessary, and complicated calculation is required.

  This invention is made | formed in view of said subject, The objective is to provide the body dimension measuring apparatus which can measure an exact body dimension easily.

  A first characteristic configuration of the present invention is an imaging device that images the body of the measurement subject, a display screen that displays an image captured by the imaging device, and a plane installed behind the measurement subject, A reference display that is provided in at least three locations so that all are not aligned on the same straight line, a reference frame that is known to correspond to each of the reference displays on the display screen, and the actual reference An operation for calculating the dimensions of the body based on the dimensions between the displays and the dimensions between the reference displays in an image obtained by photographing the body by positioning each of the reference displays inside the corresponding reference frame. It is in the point with the part.

  By providing reference displays in at least three places as in this configuration, and shooting the body with each reference display positioned within the corresponding reference frame, the distance from the shooting target to the camera and the tilt of the camera with respect to the shooting target Can be within a predetermined range. Thereby, based on the dimension between the actual reference displays and the dimension between the reference displays in the image, the actual body dimensions can be obtained from the body dimensions on the image. For this reason, it is possible to capture an image with less distortion by facing the measurement object relatively easily. As a result, body dimensions can be measured easily and accurately without necessarily correcting for image distortion.

  The second characteristic configuration of the present invention is that the reference display and the reference frame are provided at four locations so as to form a quadrilateral.

  As shown in the first feature configuration, at least three reference displays may be used in order to face the photographing apparatus. However, by providing the reference display and the reference frame at four locations so as to form a quadrilateral as in this configuration, the degree of freedom to select at least three reference displays is increased. For this reason, the attitude | position determination of an imaging device can be performed more rapidly. In general, the finder of the photographing apparatus is rectangular, but by providing four reference displays and reference frames as in this configuration, the reference frame can be easily grasped in the finder, and the measurement work is further facilitated.

  The third characteristic configuration of the present invention is that an auxiliary line for guiding the reference display to the reference frame is provided on the display screen.

  With this configuration, the reference display can be easily positioned inside the reference frame by moving the photographing apparatus so that the reference display moves along the auxiliary line. This makes it easier to measure body dimensions.

  A fourth characteristic configuration of the present invention lies in that an informing unit is provided that indicates that the reference display is located within the reference frame.

  By providing the notification unit as in the present configuration, the user can surely know that the photographing apparatus has been accurately directed at the measurement subject. Therefore, an image can be obtained without missing the photographing timing, and the body measurement work becomes more efficient.

  As shown in FIG. 1, this body size measuring apparatus includes a camera 11 (corresponding to the imaging apparatus of the present invention), a computer that processes an image captured by the camera 11, and a monitor 16 that is connected to the computer and displays an image. With. As the camera 11, for example, a commercially available digital camera can be used. In the computer, software and / or hardware, an image acquisition unit 12 that reads an image taken by the camera 11, an image processing unit 13 that processes the read image, and a calculation that performs various calculations such as calculation of body dimensions A display connection unit 15 for controlling output information to the unit 14, a monitor 16 and a database 17 for storing various data such as past measurement results are constructed.

  In addition, as shown in FIG. 2, the body dimension measuring device includes a background screen 20 that is a plane provided behind the person to be measured. The background screen 20 is preferably a retroreflective sheet in order to clarify the contrast of the body of the subject in the captured image. The background screen 20 is provided with a reference display 21 with known distances provided at least at three locations so that all are not aligned in the same straight line. In the example of FIG. 2, reference displays 21a, 21b, 21c, and 21d are provided at four locations so as to form a rectangle.

  FIG. 3 is a diagram showing a display screen 11 a provided in the camera 11. As shown in FIG. 3, the body dimension measuring apparatus includes reference frames 22a, 22b, 22c, and 22d provided on the display screen 11a in correspondence with the reference displays 21a, 21b, 21c, and 21d. In this embodiment, the reference frame 22 is a rectangular frame, and is provided so as to form a rectangle at the four corners of the display screen 11a corresponding to the reference display. The reference frame 22 can be physically provided on the surface of the display screen 11a by sealing or printing, for example. Further, the reference frame 22 may be drawn by a display element such as a liquid crystal in the display screen, and electronically superimposed on the display image.

  The arithmetic unit 14 positions the reference displays 21a, 21b, 21c, and 21d in the corresponding reference frames 22a, 22b, 22c, and 22d, and displays the actual reference displays 21a, 21b, Based on the dimension between 21c and 21d and the standard display 21a, 21b, 21c and 21d in the image, the body dimension is calculated. In this embodiment, the dimensions of each part of the body such as the bust, the waist, and the hip are calculated based on the front photograph (see FIG. 6) and the side photograph (see FIG. 7) of the measurement subject.

  Next, the flow of body dimension measurement in this body dimension assumption apparatus will be described. First, the measurer attaches the background screen 20 to, for example, a wall. At this time, the height at which the background screen 20 is provided varies depending on the height of the person to be measured, but for example, approximately the entire area of the torso of the person to be measured between the upper reference displays 21a and 21b and the lower reference displays 21c and 21d. Set to the height at which. Note that an error occurs in the measurement result depending on the position where the person to be measured stands (where the person stands between the camera 11 and the screen 20). Therefore, for example, it is preferable that a guide display such as “Stand so that the back or shoulder touches the screen lightly” is written on the screen 20. Or you may describe the same wording in the instruction manual of this device.

  FIG. 4 is a diagram showing a state in which the reference displays 21a, 21b, 21c, and 21d are projected on the display screen 11a with the lens of the camera 11 facing the background screen 20. In this figure, each reference display 21a, 21b, 21c, 21d is not located inside the corresponding standard frame 22a, 22b, 22c, 22d. In this state, the measurer adjusts the relative position of the camera 11 with respect to the screen, the angle of the camera 11, and the like, so that each reference display 21a, 21b, 21c, 21d is displayed in the corresponding reference frame 22a, 22b, 22c, 22d. Located within. FIG. 5 shows a state of the display screen 11a of the camera 11 in a state where the respective reference displays 21a, 21b, 21c, and 21d are positioned in the corresponding reference frames 22a, 22b, 22c, and 22d. In this manner, the body of the measurement subject is photographed in a state where the respective reference displays 21a, 21b, 21c, and 21d are positioned inside the corresponding reference frames 22a, 22b, 22c, and 22d. In the present embodiment, for example, two images of the front image shown in FIG. 6 and the side image shown in FIG. 7 are taken. In this body dimension measuring apparatus, for example, the camera 11 may be installed on a tripod or the like and measurement may be performed by the person being measured. In this case, the measurer and the person to be measured match. Hereinafter, the measurer and the person to be measured are also referred to as a user.

  Thereafter, the camera 11 or a recording medium provided in the camera 11 at the time of shooting is connected to the computer, and the shot image is read into the computer. FIG. 8 is a diagram showing a screen displayed on the monitor 16 when the front photograph is read into the computer. An image acquisition unit 12 provided in the computer acquires image data from the camera 11 or a recording medium. The image processing unit 13 acquires image data from the image acquisition unit 12 and executes various image processes. Specifically, the positions of the reference displays 21a, 21b, 21c, and 21d on the monitor 16 are recognized by image recognition. Here, reference numeral 23 in FIG. 8 denotes image recognition areas 23a, 23b, 23c, and 23d for performing image recognition processing on the monitor 16. When shooting with the camera 11 described above, if the reference displays 21a, 21b, 21c, and 21d are positioned inside the reference frames 22a, 22b, 22c, and 22d, the reference display 21a is read when the image is read into the computer. , 21b, 21c, and 21d are arranged in the image recognition areas 23a, 23b, 23c, and 23d, and the reference frames 22a, 22b, 22c, and 22d and the image recognition areas 23a, 23b, 23c, and 23d are arranged, respectively. . When the reference display 21 is recognized in each of the image recognition areas 23a, 23b, 23c, and 23d, a display “Read a front picture” is performed. If there is an image recognition area 23 in which the reference display 21 cannot be recognized, a display that the reference display 21 cannot be recognized and a display that the camera 11 needs to be retaken are displayed. In this case, for example, among the image recognition areas 23 that are normally displayed in blue, the image recognition area 23 that cannot recognize the reference display 21 may be displayed in red. When the reference displays 21a, 21b, 21c, and 21d are recognized in the respective image recognition areas 23a, 23b, 23c, and 23d, when the measurer user selects “Read”, the image processing unit 13 displays the image of the front photograph. Perform binarization processing.

  When the user selects “next” after reading the front picture, the process proceeds to reading the side picture as shown in FIG. The details of reading the side photo are the same as in the case of the front photo, and will not be described.

  After the reading of the front and side photographs is completed, when the user selects “next”, the screen moves to a body dimension measurement screen as shown in FIG. In this embodiment, the dimensions of the bust, waist, and hip are measured. As shown in FIG. 10, on the measurement screen, a line indicating the measurement location (bust, waist, hip) is displayed on the front photograph and the side photograph. As the position of each measurement location, for example, the position set by the user is stored as the distance from the reference display 21, for example. Of course, it is also possible to record body images of various body types in the database 17 and determine the measurement location by image recognition based on these images.

  When the user selects measurement, the calculation unit 14 calculates the dimensions of each part of the body. Specifically, the length of the measurement location in the front photograph and the side photograph is acquired as, for example, the number of pixels of the image. Moreover, the distance between each reference | standard display 21a, 21b, 21c, 21d is acquired as the pixel number of an image, for example. When the image recognition areas 23a, 23b, 23c, and 23d are not set so large, for example, there are reference displays 21a, 21b, 21c, and 21d at predetermined locations such as the centers of the image recognition areas 23a, 23b, 23c, and 23d. As a matter of course, the following calculation may be performed with the distance between the predetermined locations as the distance between the reference displays 21a, 21b, 21c, and 21d.

The calculation unit 14 calculates the ratio between the distance between the reference displays 21a, 21b, 21c, and 21d on the actual background screen 20 and the distance between the reference displays 21a, 21b, 21c, and 21d on the front photograph image and the front photograph. The actual linear dimension (width) of the measurement part of the body of the subject is calculated from the linear dimension of the measurement part. Further, the calculation unit 14 calculates the ratio between the distance between the reference displays 21a, 21b, 21c, and 21d on the actual background screen 20 and the distance between the reference displays 21a, 21b, 21c, and 21d on the side photograph image; The actual linear dimension (thickness) of the measurement part of the body of the subject is calculated from the linear dimension of the measurement part in the side photograph. The calculation unit 14 calculates the peripheral dimensions of each part of the body based on a predetermined correlation equation provided in advance using the acquired actual linear dimension of the body. For example, as a correlation formula, a correlation formula approximated to an ellipse having the major axis of the width of each part of the body and the minor axis of the thickness is provided. Of course, the calculation of the peripheral dimension is not limited to this, and for example, the database 17 may be provided with a map showing the correlation between the linear dimension of the body and the peripheral dimension, and the dimensions of each part of the body may be acquired based on this map. .
In addition, the line which shows the measurement location (bust, waist, hips) displayed on the above-mentioned front photograph and side photograph can be moved by dragging with a mouse, for example, and the line which shows a measurement location is moved. The body dimensions are calculated based on the new line.

  After the calculation of the body dimensions is completed, when the user selects “next”, the screen shifts to a measurement result display screen as shown in FIG. On this measurement result transition screen, the transition of the dimensions of each part of the body over a predetermined period is displayed as a graph based on the past measurement results of the dimensions of each part of the body recorded in the database 17. In FIG. 11, changes in body dimensions over the past week are displayed. In addition, the period for displaying the transition of the body dimensions can be selected by the user, for example, one month, three months, six months, or the like. Moreover, the percentage with respect to the initial value of this measurement result of the dimension of each part of the body is displayed. Moreover, you may display the one point advice regarding health etc. according to a measurement result.

  Further, when the user selects “measurement value transmission” on the measurement result display screen, the measurement result is transmitted to the database 17 and stored. This transmission result is used, for example, for creating a graph showing the transition of body dimensions in the next and subsequent measurements. Further, when “reception of comparison image” is selected, the transition of the body shape is displayed as a three-dimensional image, for example. The three-dimensional image of the body shape is recorded in the database 17 as a three-dimensional image of a body shape having a different size for each part of the body, and a three-dimensional image corresponding to the measurement result is displayed. A three-dimensional image may be generated each time according to the body dimensions.

  If “Return” is selected on the display screen of each monitor 16, the screen before the transition is returned. If “end” is selected, the process is terminated without performing the subsequent process.

[Another embodiment]
(1) In the above-described embodiment, the case where an image captured by the camera 11 such as the digital camera 11 is read into a computer has been described as an example. However, the present invention is not limited to this. For example, as shown in FIGS. 13, 14, and 15, the body dimension may be measured while the web camera 11 is connected to a computer and the image captured by the web camera 11 is displayed on the monitor 16 in real time. FIG. 13 shows an example of the display screen of the monitor 16 in this embodiment. FIG. 14 is an example of a display image when a front image of the measurement subject is captured, and FIG. 15 is an example of a display image when a side image is captured. In this embodiment, the reference frames 22a, 22b, 22c, and 22d are displayed on the monitor 16, and the areas in the reference frames 22a, 22b, 22c, and 22d are image recognition areas. In this figure, each reference display 21a, 21b, 21c, 21d is not located inside the corresponding standard frame 22a, 22b, 22c, 22d. In this state, the measurer adjusts the relative position of the camera 11 with respect to the screen, the angle of the camera 11, and the like, so that each reference display 21a, 21b, 21c, 21d is displayed in the corresponding reference frame 22a, 22b, 22c, 22d. Located within.

  Note that it is preferable to provide a notification unit indicating that the reference display 21 is located within the reference frame 22. The notification unit may indicate that each reference display 21 is located in the reference frame 22 and performs notification when all the reference displays 21 are located in the corresponding reference frame 22. There may be. Examples of the former include those that change the display mode of the reference frame 22, such as changing the color of the reference frame 22 before and after the reference display 21 is positioned in the reference frame 22. In addition, as a notification unit that performs notification when all the latter reference displays 21 are located inside the corresponding reference frame 22, for example, in the reference frame 22 corresponding to all the reference displays 21 on the screen of the monitor 16. And the one that displays that it is located in the position. Further, the display mode of the reference frame 22 may be changed when all the reference displays 21 are located inside the corresponding reference frame 22.

(2) As another embodiment, when the reference frame 22 is provided on the display screen provided in the camera 11, it is preferable that an auxiliary line for guiding the reference display 21 to the reference frame 22 is provided on the display screen. FIG. 16 shows an example of the display screen of the camera 11 provided with the auxiliary lines 24, 25, and 26. In this embodiment, vertical auxiliary lines 26a and 26b extending by connecting the vertical lines of the reference frames 22a and 22c and a vertical auxiliary line 24c extending in the center thereof are provided. Similarly, vertical auxiliary lines 26c, 26d, and 24d are provided for the reference frames 22b and 22d. Further, horizontal auxiliary lines 25a and 25b extending by connecting the horizontal lines of the reference frames 22a and 22b, and a horizontal auxiliary line 24a extending in the center thereof are provided. Similarly, the reference frames 22c and 22d are provided with horizontal auxiliary lines 25c, 25d, and 24b. As a result of having this configuration, even when the reference display 21 is not in the reference frame 22, the reference display 21 is set as a reference by operating the camera 11 and moving the reference display 21 along the auxiliary lines 24, 25, and 26. It becomes easy to put in the frame 22. As a result, the photographing operation can be performed quickly.

(3) In the above-described embodiment, it is preferable to perform image correction processing when a captured image is read. For example, the calculation unit 14 calculates the distance between the camera 11 and the background screen 20 and the tilt of the camera 11 from the positional relationship of the reference display 21. The image processing unit 13 performs correction to remove the influence of distortion of the lens of the camera 11 based on these calculation results. Further, correction for removing image distortion due to the tilt of the camera 11 may be performed. Even in the case of performing such correction, the distance from the background screen 20 to the camera 11 and the tilt of the camera 11 with respect to the background screen 20 are within the predetermined range, so that a complicated calculation as in the prior art is not performed. Correction can be performed.

(4) In the above-described embodiment, the example in which the reference frame 22 and the reference display 21 are provided at four positions has been described, but the present invention is not limited to this. The reference frame 22 and the reference display 21 may be provided in at least three places so that they are not arranged in the same straight line, and may be provided in five or more places.

Functional block diagram showing a body dimension measuring apparatus according to the present invention Illustration showing background screen The figure which shows the display screen of the photographing device The figure which shows the flow of photographing with the photographing device The figure which shows the flow of photographing with the photographing device The figure which shows the flow of photographing with the photographing device The figure which shows the flow of photographing with the photographing device Diagram showing the flow of calculation of body dimensions Diagram showing the flow of calculation of body dimensions Diagram showing the flow of calculation of body dimensions Diagram showing the flow of calculation of body dimensions Diagram showing the flow of calculation of body dimensions The figure which shows the flow of a measurement by the body dimension measuring apparatus which concerns on another embodiment. The figure which shows the flow of a measurement by the body dimension measuring apparatus which concerns on another embodiment. The figure which shows the flow of a measurement by the body dimension measuring apparatus which concerns on another embodiment. The figure which shows the display screen of the imaging device which concerns on another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Imaging device 11a Display screen 14 Calculation part 21 Reference display 22 Reference frame 24 Auxiliary line 25 Auxiliary line 26 Auxiliary line

Claims (4)

An imaging device for imaging the body of the subject;
A display screen for displaying an image photographed by the photographing device;
On the plane installed behind the person to be measured, a reference display in which the distance between each other is provided in at least three locations so that all are not aligned on the same straight line;
A reference frame provided corresponding to each of the reference displays on the display screen;
The dimensions of the body based on the actual dimensions between the reference displays and the dimensions between the reference displays in an image taken of the body with the respective reference displays positioned within the corresponding reference frame. A body dimension measuring device comprising a computing unit for computing the above.   The body dimension measuring apparatus according to claim 1, wherein the reference display and the reference frame are provided at four locations so as to form a quadrilateral.   The body dimension measuring device according to claim 1 or 2, wherein an auxiliary line for guiding the reference display to the reference frame is provided on the display screen.   The body dimension measuring device according to any one of claims 1 to 3, further comprising a notification unit indicating that the reference display is located within the reference frame.

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