JP2868985B2 - Underwear 3D human body measurement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwear three-dimensional human body measuring apparatus. More specifically, the present invention relates to an underwear three-dimensional human body measuring device capable of measuring a human body required for manufacturing underwear and selecting underwear with high accuracy and high efficiency.

[0002]

2. Description of the Related Art In recent years, it is important that underwear has a function of maximizing beautiful proportions in accordance with the body shape, in addition to essential functions such as absorption of sweat and regulation of body temperature. There is a great deal of interest in the function of such underwear in the production and selection of underwear.

[0003] The optimality of such proportions is determined by factors such as height, weight, thighs, hips, waist, and bust, and the most beautiful appearance is determined by the balance of these factors. In the production and selection of the optimal underwear required for such an optimal figure, it is necessary to accurately and quickly measure the human figure, and measurement means for that purpose have been improved and developed. ing.

Conventionally, as a means for measuring a human figure, a measuring means for directly measuring a human body with a measuring device such as a tape measure or a gauge has been used very generally. However, such measuring means for directly measuring a human body has a large error by the measurer and is very inefficient. Therefore, recently, a non-contact three-dimensional measuring device has been studied as a measuring unit for measuring such a human body shape.

Actually, it has long been practiced to optically capture the three-dimensional shape of an object. Moire fringes are captured using an image sensor such as a television camera, and the shape of the measured object is automatically calculated by a computer. Attempting devices have been developed. This moiré method utilizes a stripe pattern generated when a grid pattern serving as a reference and a deformed grid image obtained by throwing the reference grid pattern onto an object are overlaid.

That is, a pattern obtained when an object is light-cut by a reference grid line, that is, a contour grid pattern is formed by superimposing a deformed grid image on a reference grid. Among the measurement devices using the non-contact measurement principle, those suitable for human body measurement include an image encoder method and a coded pattern projection method. The former scans and measures a measurement object with a belt-shaped laser beam, and utilizes the light cutting principle. However, in this apparatus, it is necessary to fix the measurement symmetry for about 3 seconds during scanning, and further, an environment close to a dark room is required.

In the latter method, a plurality of grid patterns are photographed, a unique number is assigned (encoded) to each point on the measurement object by using all the images, and coordinates are calculated from the positions. Also in this apparatus, it is necessary to restrain the target for three seconds while projecting the grid pattern. further,
Since both use a CCD camera as a detector, the measurement accuracy is 0.5%, which cannot be said to be high.

Therefore, in the conventional non-contact measuring device, a measuring time of about 3 seconds is required to obtain high-density information. Has the disadvantage that it is not suitable. The present invention has been made in view of the above circumstances, and eliminates the disadvantages of the conventional non-contact three-dimensional measurement method, does not require an environment close to a dark room, and is highly efficient and highly accurate. It is an object of the present invention to provide an underwear three-dimensional human body measuring device capable of measuring a human body.

[0009]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by providing a non-contact three-dimensional shape of a human body surface.
An underwear three-dimensional human body measuring device for measuring
Along with a measurement unit consisting of a camera and a projector equipped with a grid and a shutter, a switch, and a frame memory , it performs image shooting control, switch control, and image coordinate processing.
Nau measurement control unit, an arithmetic and control unit having a data creation unit and the data display unit, a total of the arithmetic and control unit
According to the image capturing control and switch control of the measurement control section,
Lattice pattern is human body by fixed unit projector
Projected onto the surface, and the shape of the human body
The grid line pattern deformed by
Is stored in the frame memory and stored in the image coordinates of the calculation control unit.
XYZ with the origin set to O (0,0,0) by processing
In the rectangular coordinate space, the projector lens
And the principal point is point A.
(0, a, 0) and CCD
The principal point of the camera lens is defined as a point B in the YZ plane.
At (0, a, b) and its optical axis passes through the origin O
And the plane of the captured deformed grid image
Let x be a point o (0, a + b, b + d) and parallel to the X axis.
When the observation system is an xy rectangular coordinate system having an axis
In the object space system, the n-th
Obtained in the XZ plane when the angle of the grid line is θN
A point on the grid line is defined as (X, 0, atan θN) and projected
Let T (X, Y, Z) be a point on the grid line of the grid pattern,
Further, in the observation system, T (X, Y, Z)
Assuming that the point is t (x, y) (see FIG. 1), the modified lattice image
From the two-dimensional coordinates (x, y) of the grid line
Coordinates (X, Y, Z)

(Equation 2) And the three-dimensional coordinate data is
Providing 3-dimensional human body measurement apparatus undergarment according to claim Rukoto appears through the chromatography data creation unit and the data display unit.

Hereinafter, the measurement principle of the underwear three-dimensional human body measuring apparatus of the present invention will be described.

[0011]

First, a pattern consisting of a linear lattice pattern is projected onto the target human body. This pattern is 3
Since it is deformed by dimensional undulations, if it is observed from a direction different from the projection direction at this time, a pattern deformed according to its surface shape can be seen.

Therefore, a horizontal grid pattern is projected on a measurement object by a projector, and an observed deformed grid image is photographed by, for example, an ITV camera. Then, the acquired deformed lattice image is processed by a computer. Next, the relationship between the observed deformed lattice image (image captured in the frame memory) and the three-dimensional coordinates on the surface of the measurement object is processed. Conditions and coordinate axes necessary to derive this relational expression are set as shown in FIG.

In FIG. 1, the origin is O (0,0,
0), and the XYZ rectangular coordinates are defined as an object space system. The optical axis of the projector lens for projecting the grid pattern is Y
It is assumed that the lens principal point is located at point A (0, a, 0) in accordance with the axis. Also, the principal point of the camera lens for working on the deformed lattice image is located at point B (0, a, b) in the YZ plane,
The optical axis of the camera lens is arranged to pass through the origin O.

The plane of the deformed grid image captured by the camera is defined as an xy rectangular coordinate system, which is referred to as an observation system. The center of the observation system is set to a point o (0, a + b, b + d), and the x-axis is taken parallel to the X-axis. The angle of the n-th grid line (the angle from the Y axis in the ZY plane) emitted from the point A (projector lens) is defined as θN, and the X−
A point on a grid line obtained in the Z plane is defined as (X, 0, atan θ
N). The point on the grid line projected on the measurement object is T
(X, Y, Z), and the corresponding observation system point is t
Assuming that (x, y), the point T is the intersection of the straight line AD and the straight line tB, so that a relational expression between T and t is obtained as in the following equation.

[0015]

(Equation 3)

From this equation, the coordinates (X, Y, Z) of the surface of the measurement object can be obtained from the coordinates (x, y) of the grid lines of the deformed grid image (the captured image). Next, in order to extract grid lines from the captured image, an analysis process by a computer is performed. After the A / D conversion, the image stored in the frame memory is sent to the computer as pixel information. At this time, binarization of each pixel is performed to extract a grid line.

After the noise processing, the position of each grid line is determined, the coordinate is converted from secondary to three-dimensional by equation (1), and the result is output to terminate the processing. Since sesame salt noise mainly causes a problem as noise, binarization and filtering are performed. Hereinafter, the underwear three-dimensional human body measuring apparatus of the present invention will be described in more detail with reference to examples.

[0018]

Embodiment 1 As an underwear three-dimensional human body measuring apparatus of the present invention, for example, the one illustrated in FIG. 2 can be exemplified as one embodiment. As illustrated in FIG. 2, the underwear three-dimensional human body measuring apparatus of the present invention includes a measuring unit (1) including a CCD camera (11) and a projector (12), a switch (2), and a frame memory (3). , A computer (4).

The projector (12) has a grid (12).
1) and a shutter (122). In the present invention, two measurement units may be used when measuring at a wide angle, and a monitor (5) may be provided when the data in the frame memory is to be viewed on the spot.

When a human body is measured by using this apparatus, the apparatus is arranged, for example, as shown in FIG. As illustrated in this figure, when measuring the front and rear surfaces of a human body, the optical path is bent at a right angle using a mirror using two measurement units, and the human body is measured. Switching between the two measurement units is performed by a switch which is operated by a command from a computer, so that data on the front surface and the rear surface can be continuously photographed. The captured video data is stored in a frame memory, and three-dimensional coordinates are calculated from the data by a computer.

[0021] For this calculation, the device, calculation control unit, the data creation unit, and a data display unit, calculation control section, the image capturing apparatus controlled switching device control, the image-coordinate processing
Do. In the control of the image photographing apparatus by the measurement control unit, the image of the camera is converted into image information and transferred to the computer. This image capturing device control subroutine initializes the image capturing device, captures an image, and transfers information to a computer.

In the switching control of the measurement control unit, the flashing of the illumination of the projector and the switching of the video signal are executed by the computer sending a command to the switching unit. In the image processing in the image / coordinate processing of the measurement control unit, a necessary image of a human body is separated from a background from a captured image, and after emphasizing the image, information on stripes captured by the measurement device is extracted.

The procedure of the images processing of the measurement control unit,
It is as follows. First, for example, as illustrated in FIG. 4, image data transferred from a measuring unit to a computer and input is loaded as a pseudo-color display. Here, in this system, it is not necessary to perform image input in a dark room as long as the projected fringes can be recognized.

Next, a shadow is generated in accordance with the unevenness of the human body, and the brightness of the stripes on the entire screen is not constant, and it becomes difficult to determine a threshold value when performing binarization. Is performed to remove the non-uniformity of the image intensity due to. FIG. 5 is an image after shading correction, and FIG.
It can be seen that the stripe pattern is clearer than the image of FIG.

Next, in order to leave only bright stripes,
An appropriate threshold value is set for the input image, and a value greater than 1 is converted to 1 and a value less than 0 is converted to 0 to perform binarization. Next, the image immediately after the binarization is scattered with irregularities such as single-point noises and stripes, which affect subsequent processing and reduce accuracy. For example, as shown in FIG. In order to remove the noise, a neighborhood process is performed on the image, and noise removal and smoothing are performed. In this case, if the stripes are separated and adhered,
Since the recognition of the number of stripes may be incomplete, it is desirable to perform neighborhood processing also on this part. Next, as illustrated in FIG. 8, for example, thinning is performed to obtain the center of the stripe. The thinning algorithm is, for example, H
The Iditch method can be employed.

Further, as exemplified in FIG. 8, in order to calculate the three-dimensional coordinates, it is necessary to add a stripe order to the thinned image, and the stripe order recognition requires that the center black stripe is thicker than the others. The order of the stripes is automatically determined using the order, the order of the stripes is added to the thinned stripes, and the colors are classified according to the order. Next, as illustrated for example in FIG. 9, the seat of the image-coordinate processing
The three-dimensional coordinates are calculated using the above-described equation (1) by the target processing . Finally, the calculated coordinates are displayed as a wire frame by a data creation unit and a data display unit as shown in FIG. 10 or as a surface model using three-dimensional coordinates. Understand the shape.

In the data creating section, an optimal body shape is created based on the height of the person to be measured. The bust height, waist height, hip height, bust circumference, underbust circumference, waist circumference, hip circumference, and the like are calculated based on the calculated three-dimensional coordinates. In the data display unit, silhouette data obtained by observing the human body from the front and side surfaces obtained by extracting the most protruding points in the front, rear, left and right directions from the calculated three-dimensional coordinates, wire frame data representing the shape of the whole body, bust, hips Contour line data and the like obtained by extracting surrounding three-dimensional coordinate data and converting the data into data focusing on the degree of protrusion of each part are displayed.

Further, in the present invention, the comparison of data may be displayed in a proportion balance diagram on the data display section, for example, as shown in FIG. Still further, in the present invention, for example, as illustrated in FIG. 12, the front and side cross-sectional shapes may be displayed based on silhouette data. At the same time, by instructing the bust height, waist height, and hip height in a straight line, it is possible to grasp the change in each position.

Further, as shown in FIG. 13, for example, the front, side, and rear wire frames may be displayed. Further, the positions of the bust height, waist height, and hip height may be colored, so that the positions and shapes of the whole body can be grasped. Further, as illustrated in FIG. 14, for example, the shape of the chest or the like may be displayed by contour lines. Example 2 The shape of a reference cylinder (r = 101.103 mm) was measured using the underwear three-dimensional human body measurement device specifically shown in Example 1, and errors in the measurement device were examined.

The configuration of each device was as shown in Table 1.

[0031]

[Table 1]

The distance from the projector to the origin is 16
90.0 mm, the distance from the projector to the camera is 750.0 mm, and the pitch of the grating is 7.06 mm
And the magnification was 1.89 pixels / mm.
The time required from the image input to the calculation of the three-dimensional coordinates was about 3 minutes at about 400 measurement points. The display of the measurement results in a wire frame is as shown in FIG.
The coordinate position of the plane of each part of C is shown in FIGS.
7, FIG. FIGS. 16 to 18 show a comparison between a measured value in the apparatus of the present invention and a measured value in the three-dimensional measuring machine.

The results of the comparison between the measured values in the apparatus of the present invention and the measured values in the three-dimensional measuring machine are as shown in Table 2, and as shown in this table, in the present invention,
It turns out that there is very high precision.

[0034]

[Table 2]

EXAMPLE 3 Using the measuring apparatus of Example 1, a plaster image of a human body as shown in FIG. 19 was measured. The distance from the projector to the origin is 1950.0 mm, the distance from the projector to the camera is 673.0 mm, and the pitch of the grating is 7.
0 mm, and the magnification was 0.89 pixel / mm. The time required from the image input to the calculation of the three-dimensional coordinates was about 3 minutes at about 400 measurement points.

FIG. 20 shows a wire frame of the measurement result.
21. Further, in FIG. 21, the coordinates of the cross section of the portion A are shown in FIG. Example 4 A dummy body used for dressmaking or the like was used as a measurement target, and it was set on a rotary table, and measurements were made in four directions.

The measurement was performed four times by rotating the object on the turntable by 90 degrees. At the same time, a pixel not projecting the grid pattern was photographed, and a curve was extracted therefrom. The coordinates on the curve are detected at the intersection of the curve and the grid,
They were connected using a spline function. FIG. 22 and FIG. 23 show a wire frame model of the body measured by the above-described method and curves thereon. From the measurement results, it is possible to measure coordinates on an arbitrary curve on an object, which was difficult to measure by the conventional method, by using this system.

[0038]

According to the present invention, as described in detail above, it is possible to measure a non-contact human body with high efficiency and high accuracy without requiring an environment close to a dark room, and to manufacture and select underwear most suitable for the figure. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing the relationship between spatial coordinates showing the measurement principle of the present invention.

FIG. 2 is a schematic diagram showing a basic configuration of the present invention.

FIG. 3 is a layout diagram showing the layout of the apparatus of the present invention.

FIG. 4 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 5 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 6 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 7 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 8 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 9 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 10 is a three-dimensional view showing one process of image processing using the present invention.

FIG. 11 is a balance diagram showing an example of the display unit of the present invention.

FIG. 12 is a schematic view showing one example of a display unit of the present invention.

FIG. 13 is a schematic view showing an example of the display unit of the present invention.

FIG. 14 is a schematic view showing an example of a display unit of the present invention.

FIG. 15 is a schematic diagram showing a measurement result using the apparatus of the present invention.

FIG. 16 is a cross-sectional view showing a measurement result using the device of the present invention.

FIG. 17 is a cross-sectional view showing a measurement result using the device of the present invention.

FIG. 18 is a cross-sectional view showing a measurement result using the device of the present invention.

FIG. 19 is a schematic diagram showing a target object which is a target of the apparatus of the present invention.

FIG. 20 is a schematic diagram showing a measurement result using the apparatus of the present invention.

FIG. 21 is a cross-sectional view showing a measurement result using the apparatus of the present invention.

FIG. 22 is a schematic diagram showing measurement results using the apparatus of the present invention.

FIG. 23 is a schematic diagram showing a measurement result using the apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Measuring unit 11 CCD camera 12 Projector 121 Grid 122 Shutter 2 Switcher 3 Frame memory 4 Computer

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Ryohei Komatsubara 3-10-7 Kotobuki-cho, Fuchu-shi, Tokyo Fujimori Building Inside Techno Arts Laboratory Co., Ltd. (56) References JP-A-5-196436 (JP, A) JP-A-2-144043 (JP, A) JP-A-3-138508 (JP, A) JP-A-56-115904 (JP, A) JP-A-53-47745 (JP, A) (58) Int.Cl. ⁶ , DB name) G01B 11/00-11/30 A41H 1/02

Claims (5)

(57) [Claims] 1. A three-dimensional shape of a human body surface is measured without contact.
An underwear three-dimensional human body measuring apparatus, comprising: a measuring unit including a CCD camera and a projector having a grid and a shutter, a switch, a frame memory, and an image.
Imaging control, measurement control unit for performing switcher control and image coordinates processing, an arithmetic and control unit having a data creation unit and the data display unit, an image capturing control of the measurement control unit in the arithmetic and control unit Oyo
The measurement unit projector according to
The grid pattern is projected onto the human body surface by the
Lattice line pattern deformed by human body surface shape
Is captured as a deformed grid image and recorded in the frame memory.
The origin is set to O (0,0,0) by the image coordinate processing of the calculation control unit.
0) in the XYZ rectangular coordinate object space system,
Align the optical axis of the projector lens with the Y axis,
And place the principal point at point A (0, a, 0).
And the main point of the CCD camera lens is Y-
It is placed at a point B (0, a, b) in the Z plane, and its optical axis is
Arranged so as to pass through the origin O
With the center at point o (0, a + b, b + d), and
An xy rectangular coordinate observation system having an x-axis parallel to the x-axis
In the object space system,
XZ plane when the angle of the n-th grid line is θN
A point on a grid line obtained in the plane is defined as (X, 0, atan θ
N), and a point on a grid line of the projected grid pattern is T (X,
Y, Z), and T (X, Y,
When the point corresponding to Z) is t (x, y), the modified grid
From the two-dimensional coordinates (x, y) of the grid lines of the image, the third order of the human body surface
Original coordinates (X, Y, Z) is ## EQU1 ## And the three-dimensional coordinate data is
Over data creation unit and is displayed through the data display unit Underwear 3-dimensional human body measurement apparatus according to claim Rukoto. 2. A data display unit, three-dimensional coordinate data
Obtained by extracting the most salient points of the longitudinal and lateral directions from the motor,
Silhouette data obtained by observing the human body from the front and side,
3. The underwear 3 according to claim 1, wherein wireframe data representing the shape of the whole body, bust and three-dimensional coordinate data around the hip are extracted , converted into data focusing on the degree of protrusion of each part, and contour line data is displayed. Dimensional human body measurement device. 3. A process according to claim Show Propo Activation balanced view in the data display section 1 or 3 dimensional person for 2 underwear
Body measurement device. 4. The method of claim 1 to one of three-dimensional human body undergarment 3 data display unit smell Te displays wireframe
Measuring device. 5. claims 1 displays the cross-sectional shape of the front surface and the side surface of the data display unit for one of underwear 4
3D human body measurement device.