JPH07139922A - Apparatus for measuring human body three-dimensionally for underwear - Google Patents

Abstract

PURPOSE:To measure one's body with high efficiency and high accuracy in a non-contact manner without requiring an environment close to a dark room and to manufacture and select an underwear most fit to one's bodily shape. CONSTITUTION:A measuring unit 1 is constituted of a CCD camera 11 and a projector 12 equipped with a grating 121 and a shutter 122. The apparatus consists of the measuring unit 1, a switching device 2, a frame memory 3 and a computer 4. Software is composed of a measuring/controlling part, a data- forming part and a data display part. The measuring/controlling part controls an image pickup device, the switching device and processes images and coordinates. Photographed images are stored in the frame memory for deformed grating images and three-dimensional coordinates of human bodies are operated by the computer. The data are displayed.

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 device. More specifically, the present invention relates to an underwear three-dimensional human body measuring apparatus capable of highly accurately and efficiently measuring a human body necessary for manufacturing underwear and selecting underwear.

[0002]

2. Description of the Related Art In recent years, it is important for underwear to have not only essential functions such as absorption of sweat and regulation of body temperature but also the function of maximizing beautiful proportions suitable for the body shape. There is great interest in the function of such underwear in the manufacture of underwear and the selection of underwear.

The optimality of such proportions is determined by factors such as height, weight, thighs, hips, waist and bust, and the balance of these factors determines the appearance that looks most beautiful. In the production and selection of the optimum underwear required for such an optimum body shape, it is necessary to measure the human body shape accurately and quickly, and the measurement means for that purpose has been improved and developed. ing.

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

Actually, it has long been practiced to optically capture the three-dimensional shape of an object. The moire fringes are captured by using an image sensor such as a television camera, and the shape of the object to be measured is automatically calculated by computer calculation. The devices to be obtained are being developed. The moire method uses a stripe pattern generated when a reference grid pattern and a deformed grid image obtained by throwing the reference grid pattern on an object are superposed.

That is, the contour stripes are formed by superimposing the pattern obtained when the object is optically cut by the reference lattice line, that is, the deformed lattice image on the reference lattice. Among the measuring devices using such a non-contact measurement principle, the image encoder method and the coded pattern projection method are suitable for human body measurement. The former is to measure a measurement object by scanning it with a band-shaped laser beam, and uses the principle of light cutting. However, in this device, 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, all the images are used to give a unique number (encoding) to each point on the measuring object, and the coordinates are calculated from the positions. Also in this apparatus, it is necessary to restrain the object for 3 seconds while projecting the lattice pattern. further,
Since both use a CCD camera as a detector, the measurement accuracy is 0.5%, which is not high.

Therefore, in the conventional non-contact measuring device as described above, a measuring time of about 3 seconds is required to obtain high density information, and when a human body which is a dynamic object is to be measured. Has the drawback of not being suitable. The present invention has been made in view of the above circumstances, solves the drawbacks 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]

In order to solve the above-mentioned problems, the present invention is a three-dimensional human body measuring apparatus for underwear, comprising a CCD camera and a measuring unit consisting of a projector having a grating and a shutter, a switching device, It has an arithmetic and control unit equipped with a frame memory as well as a measurement control unit, a data creation unit, and a data display unit. The measurement control unit performs image capture device control, switching control, image processing and coordinate processing, and transforms captured images. Provided is a three-dimensional body-underwear measuring device for underwear, which stores a lattice image in a frame memory, calculates three-dimensional coordinates of a human body, and displays the data.

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

[0011]

Operation: First, a pattern consisting of a linear grid pattern is projected onto the target human body. This pattern is 3 on the surface of the object
Since it deforms due to dimensional undulations, if this is observed from a direction different from the projection direction, the deformed pattern can be seen according to its surface shape.

Therefore, a horizontal grid pattern is projected on the measuring object by the projector, and the observed deformed grid image is photographed by, for example, an ITV camera. Then, the deformed lattice image thus fetched 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. The conditions and coordinate axes required to derive this relational expression are set as shown in FIG.

In FIG. 1, the origin is O (0,0,
0) and the XYZ Cartesian coordinates as the object space system. Set the optical axis of the projector lens for lattice pattern projection to Y
It is considered that the principal point of the lens is placed at the point A (0, a, 0) in alignment with the axis. Also, the principal point of the camera lens for dealing with the deformed lattice image is placed at the point B (0, a, b) in the YZ plane,
The optical axis of the camera lens is arranged so as to pass through the origin O.

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

[0015]

[Equation 1]

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

After the noise processing, the position of each lattice line is obtained, the coordinates are converted from the secondary to the three-dimensional by the equation (1), and the result is output to complete the processing. As noise, sesame and salt noise is a major problem, so 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 the underwear three-dimensional human body measuring apparatus of the present invention, for example, the one exemplified in FIG. 2 can be shown as one mode. 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 switching unit (2), a frame memory (3). , 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 using this apparatus, for example, it is arranged as shown in FIG. As illustrated in this figure, when measuring the front and rear surfaces of a human body, the human body is measured by using two measuring units and bending the optical path at a right angle using a mirror. The switching between the two measuring units is performed by a switching device that operates in response to a command from a computer, so that the data on the front surface and the data on the rear surface can be continuously photographed. The captured video data is stored in the frame memory, and the three-dimensional coordinates are calculated by the computer from the respective data.

For this calculation, the apparatus is provided with a measurement control section, a data preparation section, and a data display section, and the measurement control section has an image photographing apparatus control, a switch control, and an image coordinate processing section. . In the control of the image capturing device of the measurement control unit, the image of the camera is converted into image information and transferred to the computer. This image capture 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 section, blinking of the illumination of the projector and switching of the video signal are executed by the computer sending a command to the switching. In the image coordinate processing of the measurement control unit, a required image of the human body is separated from the background from the captured image, the image is emphasized, and the information of the stripes captured by the measuring device is extracted.

Explaining the image coordinate processing method of this measurement control unit, the image processing procedure of this apparatus is as follows. First, for example, as illustrated in FIG. 4, the image data transferred from the measurement unit to the 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 stripes can be recognized.

Next, a shadow is generated according to the unevenness of the human body, and the brightness of the stripes on the entire screen is not constant, which makes it difficult to determine the threshold value for binarization. Shading correction 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 that of the image.

Next, in order to leave only the bright stripes,
An appropriate threshold value is set for the input image, and values above that are converted to 1 and below are converted to 0, and binarization is performed. Next, the image immediately after binarization has one-point noise and irregular irregularities of stripes scattered, which affects the subsequent processing and reduces the accuracy. For example, as shown in FIG. In order to remove, the image is subjected to neighborhood processing, noise removal and smoothing. In this case, if the stripes are divided or closely attached,
Since the recognition of the number of striped characters may be incomplete, it is desirable to perform neighborhood processing on this part as well. Next, as illustrated in FIG. 8, thinning is performed to obtain the center of the stripe. This thinning algorithm is, for example, H
The ilditch method can be adopted.

Further, as illustrated in FIG. 8, in order to calculate the three-dimensional coordinates, it is necessary to add the stripe order to the thinned image, and the stripe order recognition recognizes that the central black stripe is thicker than others. The fringe order is automatically determined by using the fringe order, the fringe order is added to the thinned fringes, and the fringe order is color-coded according to the order. Next, as illustrated in FIG. 9, for example, the three-dimensional coordinates obtained by the above operation are calculated. Finally, the calculated coordinates are displayed as a wire frame, for example, as shown in FIG. 10, or the shape is grasped as a surface model using three-dimensional coordinates.

In the data creating section, an optimum body type 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 section, silhouette data obtained by observing the human body from the front and side surfaces obtained by extracting the most prominent points in the front, rear, left, and right directions from the calculated three-dimensional coordinates, wireframe data representing the shape of the whole body, bust, hip The contour line data and the like obtained by extracting the peripheral three-dimensional coordinate data and converting it into data focusing on the degree of protrusion of each portion are displayed.

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

Furthermore, as illustrated in FIG. 13, for example, wire frames on the front surface, side surfaces, and rear surface may be displayed. Further, the positions of the bust height, waist height, and hip height may be colored, and by doing so, the respective positions and shapes in the whole body can be grasped. Furthermore, 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 measuring apparatus specifically shown in Example 1, and the error in this measuring apparatus was examined.

As the constitution of each device, those shown in Table 1 were used.

[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 grid pitch is 7.06 mm
And the enlargement ratio was 1.89 pixels / mm.
The time required from image input to calculation of three-dimensional coordinates was about 3 minutes at about 400 measurement points. The display of the measurement result in the wire frame is as shown in FIG.
The coordinate position of the plane of each part of C is shown in FIG. 16 and FIG.
7 and FIG. 16 to 18, a comparison between the measurement value of the device of the present invention and the measurement value of the three-dimensional measuring machine is shown.

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

[0034]

[Table 2]

Example 3 Using the measuring apparatus of Example 1, a plaster image of a human body size 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 grid pitch is 7.
It was 0 mm, and the magnifying power was 0.89 pixel / mm. The time required from image input to calculation of three-dimensional coordinates was about 3 minutes at about 400 measurement points.

The wire frame of the measurement result is shown in FIG.
Further, FIG. 21 shows the coordinates of the cross section of the portion A in FIG. Example 4 A dummy body used for dressmaking or the like was used as a measurement target, and the dummy body was placed on a rotary table and measurement was performed in four directions.

The measuring device was carried out by rotating the object on the turntable by 90 degrees in four steps. At the same time, pixels that do not project the grid pattern were photographed, and the curve was extracted from this. The coordinates on the curve are detected at the intersection of the curve and the grid.
They were connected using the spline function. 22 and 23 are a wireframe model of the body measured by the above method and a curve on the wireframe model. From the measurement results, it is possible to measure the coordinates on an arbitrary curve on the target, which was difficult to measure by the conventional method, by using this system.

[0038]

As described in detail above, the present invention enables highly efficient and highly accurate non-contact measurement of the human body without requiring an environment close to a dark room, and manufactures and selects underwear most suitable for the body shape. Is possible.

[Brief description of drawings]

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

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

FIG. 3 is a layout view showing the layout of the device of the present invention.

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

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

FIG. 10 is a stereoscopic view showing a 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 an example of a display unit of the present invention.

FIG. 13 is a schematic view showing an example of a 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 sectional view showing a measurement result using the apparatus 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 that 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 device of the present invention.

FIG. 22 is a schematic diagram showing a measurement result 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]

 1 Measuring Unit 11 CCD Camera 12 Projector 121 Lattice 122 Shutter 2 Switching Device 3 Frame Memory 4 Computer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toyoji Ikeda 2-3-7 Hiranocho, Chuo-ku, Osaka Urban Ace Kitahama Building Marco Co., Ltd. (72) Inventor Ryohei Komatsubara 3-10, Kotobuki, Fuchu, Tokyo 7 Fujimori Building Inside the Technoarts Research Institute

Claims (5)

[Claims] 1. A three-dimensional human body measuring device for underwear, comprising C
It has a calculation unit consisting of a CD camera and a projector equipped with a grating and a shutter, a switching unit, a frame memory, and a calculation / control unit having a measurement control unit, a data creation unit and a data display unit, and the measurement control unit controls the image capturing device. , Switcher control, image processing and coordinate processing The photographed video is stored in a frame memory as a deformed lattice image, the three-dimensional coordinates of the human body are calculated by a computer, and the data is displayed. apparatus. 2. Silhouette data obtained by extracting the most prominent points in the front, rear, left, and right directions from the calculated three-dimensional coordinates, silhouette data obtained by observing the human body from the entire surface and side surfaces, wireframe data representing the shape of the whole body, bust, and three-dimensional areas around the hips. The apparatus according to claim 1, wherein the coordinate data is extracted and converted into data focusing on the degree of protrusion of each portion in the data display unit to display the contour line data. 3. The device according to claim 1, wherein the device is displayed as a promotion balance chart on the data display unit. 4. The apparatus according to claim 1, wherein the data display section displays a wire frame. 5. The device according to claim 1, wherein the data display section displays the cross-sectional shapes of the entire surface and side surfaces.