KR20010089065A - Apparatus for Measuring of Body and the Method Therefor - Google Patents

Abstract

PURPOSE: A body measuring apparatus and a method thereof are provided to easily and accurately measure the shape of the partial body or the whole body within a short time. CONSTITUTION: A body measuring apparatus includes a material closely put on an object(40) to be measured and having a pattern on the external surface, image input elements(10A,10B) taking a photograph of the object at a predetermined angle for extracting image information of the object, a computer system(30) extracting three-dimensional coordinates from the image information of the object transmitted from the image input element and connecting points of the extracted three-dimensional coordinates for extracting the shape of the object.

Description

Apparatus for Measuring of Body and the Method Therefor}

The present invention is to measure the part of the body in order to manufacture a custom shoe or custom clothing in a shoe manufacturer or apparel company, after wearing the coded patterned cloth to be in close contact with the body to shoot the corresponding part of the body through the camera Then, the present invention relates to an apparatus and method for measuring a body, which enables a three-dimensional analysis to manufacture an optimal shoe or clothing most suitable for a consumer.

The present invention relates to an apparatus and a method for measuring a part of a body in order to manufacture a custom shoe or custom clothing in a shoe manufacturer or apparel company, and more particularly, after wearing the clothing with the encoded pattern to be in close contact with the body The present invention relates to an apparatus and method for measuring a body in which a part of a body is photographed through a camera, and then, by using three-dimensional analysis, an optimal shoe or clothing that is most suitable for a consumer.

In general, righteousness, food, state, and essence of human beings in their lives are directly related to human appearance, so they can meet with friends and business associates in their lives. During the first meeting of strangers, the elimination of their clothes becomes a criterion for evaluating various things. Therefore, in the manufacturing industry, the importance of order production to meet consumers' preferences is increasing, especially in the fields of clothing, including shoes, underwear, and wigs. The demand for custom-made clothing that fits the consumer's body is growing rapidly.

For example, in the case of shoes, for example, in the existing mass production method, the feet of the human body are classified by size and shape to make a finite number of standard foot models called 'Shoelast', and then the shoes are manufactured and sold. .

Therefore, consumers demand shoes of the shape and size most suitable for their feet, and then buy and wear a pair of shoes suitable for their tastes. If your foot shape and size are not appropriate, you will not be able to purchase your shoes against your desire to buy, and even if you have shoes with the right shape and size, you will not be able to make a purchase if you do not have a design that fits your taste. do.

In addition, consumers who have a foot shape that is significantly different from the flat or standard shape, or who have a foot size that differs significantly from the standard size, can repair or purchase expensive ready-made products because it is difficult to find shoes in conventional ready-made products. There is a problem of having to select a customized product at a cost of.

On the other hand, the tailoring method creates shoes based on the type of the foot of the consumer, thus providing a more comfortable fit to the consumer. Such tailoring is the same in all garment manufacturing industries such as underwear or wig manufacturing. It has merit.

As described above, in order to manufacture a custom shoe or a tailored garment that is more comfortable to the consumer, an apparatus capable of easily measuring the body shape and characteristics of the consumer should be provided.

For example, in order to manufacture a custom shoe, as shown in the accompanying FIG. 1, the three-dimensional shape and size of the corresponding consumer foot are measured by a predetermined method (S10), and the shoe according to the three-dimensional shape and size of the measured foot. Design 'Shoelast', a framework for manufacturing (S20), and create a shoe shoe, 'Shoelast', a practical shoe manufacturing framework based on the designed 'Shoelast' (S30), and then use 'Shoelast' to find shoes suitable for the shape and size of the consumer's feet. Produced and provided to the consumer (S40).

As described above, a conventional method of measuring a three-dimensional shape and size of a consumer's foot in the process of manufacturing a custom shoe is mainly used by a contact method and a non-contact method, which measures the shape of a foot using an electronic contact method. In this case, it is a classic method of making a foot model by attaching a material such as silicone rubber or form-art to a foot of a consumer who needs to make a custom shoe, and then pouring plaster and so on. The cost of the material is high, and it has the disadvantage of not being able to reuse the used material.

In addition, another method of contact is to use a plate made of small pins, in which the pins are placed on the shape of the bottom of the foot when the consumer's foot to be measured is placed on a plate arranged so that several small pins can move up and down. Since it moves up and down, it infers the shape of the bottom of the foot by measuring the amount of vertical movement of the pins. This method can measure any information about the shape of the bottom of the foot, but the shape of the shape of the foot and the side of the foot It is not suitable for measuring the number of points, and the number of measuring points is limited depending on the number of pins installed on the plate, so it is difficult to measure many points at a time, and the shape of the foot is deformed by the pins, which causes a problem of inferior measurement accuracy.

In addition, the non-contact method uses an optical measuring technique using slit light, which is projected by the slit light source projector 10 and the slit light source projector 10 to project stripes as shown in FIG. 2. The camera 20 receives the distorted image of the slit light source and the overall operation of the projection of the slit light source and the photographing of the distorted image of the camera 20. And a computer system 30 which processes the projection point of the slit light source into three-dimensional data and then calculates and extracts the shape of the photographed object.

An operation of measuring the shape of an object or a body through a non-contact measuring device having the above configuration is as follows.

In the three-dimensional measurement using slit light, optical triangulation is used. For convenience of explanation, triangulation using a point light source will be described first.

In FIG. 2, one of the three vertices of the triangle is referred to as the occurrence position of the slit light source projector 10, and another of the vertices 'b' is referred to as the position of the camera 20. Assume the vertex 'c' is the position of the object to be measured.

At this time, when the slit light source projection apparatus 10 and the camera 20 are relatively fixed, that is, when the position coordinates of the slit light source projection apparatus 10 and the position coordinates of the camera 20 are fixed to each other, the lens of the camera 20 When a straight line connecting the center point and the point formed on the camera 20 and a slit light source at that moment are expressed as a straight line, each becomes a straight line connecting 'b' and 'c' and 'a' and 'c'. The point where two straight lines meet in space becomes the coordinate value in three dimensions.

Accordingly, the computer system 30 extracts three-dimensional coordinate values of the entire measurement object 40 on the principle of the operation described above, and then extracts the shape of the measurement object 40 by calculation through a set algorithm.

When the slit light is projected instead of the point light in the above, a curve on the object surface can be obtained at once, and by moving the slit light and repeating the measurement, several curve data on the object surface can be obtained.

However, in the case of measuring the shape of the object by using the slit light, a drive device for moving the slit light and a control device for controlling the slit light source are required. The operation of extracting coordinate values is complicated, and thus economical efficiency is lowered.

The present invention is to solve the problems described above and to conveniently and simply measure the shape of each part of the body to produce the most suitable shoes or clothes for the consumer's body, the object is to use the slit light to stripe Instead of creating them, consumers wear the clothing with the encoded pattern on the body, shoot it with a camera, and extract the shape of the measurement object (all or part of the body) through 3D data extraction using the captured image. It is to make the measurement more accurate.

1 is a flow chart showing a conventional tailored garment manufacturing process.

Figure 2 is a block diagram of a system using a slit light when manufacturing a conventional custom clothing.

3 is a block diagram of a body measurement apparatus according to the present invention.

Figure 4 is an illustration of the coding of the clothing used in the production of tailored clothing according to the present invention.

Figure 5 is another illustration of the coding of the clothing used in the production of tailored clothing according to the present invention.

Figure 6 is a view showing the three-dimensional data acquisition for body shape extraction in the process for producing tailored clothing according to the present invention.

7 is a configuration diagram of an embodiment in which a plurality of cameras are installed for foot measurement in an embodiment of the present invention.

The present invention for achieving the above object is an image input means for photographing a measurement object at a predetermined angle and extracting the image information about the object, three-dimensional coordinates from the image information of the measurement object transmitted from the image input means; It provides a body measuring apparatus comprising a means for extracting, and means for extracting the shape of the object to be measured by connecting the points of the extracted three-dimensional coordinates with a line.

In addition, the present invention is in close contact with the material having the coded pattern on the object to be measured shape and then placed in the image input means at a predetermined angle, the image input means to take the measurement object to take the image information Transmitting to the computer system, and analyzing the received image information through a set algorithm to generate three-dimensional coordinate data of the measurement object, and connecting the generated three-dimensional coordinate data to generate surface data. It provides a body measurement method comprising the step of extracting the shape of the measurement object.

The three-dimensional coordinate data is a step of connecting a point on the curve photographed by one image input means and the lens center of the image input means in a straight line and projecting to the other image input means in an external polar line, and another image input Connecting the intersection of the polar line projected on the means and the photographed curve to the center of the lens to generate another straight line, and the straight line connecting the center of the lens of the one image input means with a straight line and the other image And extracting coordinates of an intersection point with a straight line connecting the center of the lens of the input means with a straight line to extract a three-dimensional coordinate value.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As can be seen in Figure 3, the body measurement apparatus according to the present invention comprises a plurality of image input apparatuses, the cameras 10A and 20B, and a computer system 30. 20B) is a digital camera installed with at least two or more to take a picture of the image of the object 40 to measure the shape and transmits information about it to the computer system 30.

The computer system 30 extracts three-dimensional coordinates of the measurement object 40 by analyzing the information of the measurement object 40 input from the plurality of cameras 10A and 20B, which are image input devices, through a set algorithm. It is responsible for extracting the shape of the object through the connection of the three-dimensional coordinates, and controls the correction of the camera (10A) 20B through the 'Tsai' algorithm.

The correction of the cameras 10A and 20B is to obtain the focal length corresponding to the camera's internal parameters, the camera's position and the direction information corresponding to the lens distortion coefficient, and the extrinsic parameter. to be.

In addition, the plurality of cameras 10A and 20B are directly connected to the computer system 30 to transmit image information photographed from an object or to transmit data through a separate author medium such as a diskette.

Operation of the body measurement apparatus according to the present invention having the configuration as described above is as follows.

The clothing 40 having the encoded pattern using the point A is formed on the object 40 to be measured as shown in FIG. 4 or the clothing having the encoded pattern using the line B as shown in FIG. At least two cameras 10A and 20B are positioned in the direction of the object 40 wearing the encoded pattern to measure the lens.

For example, if you want to measure your feet, wear socks or tights with striped stripes on the feet.

Subsequently, when the application program set in the computer system 30 is operated, each of the plurality of cameras 10A and 20B positioned in each direction of the measurement object 40 captures an image of the object and displays image information thereof. Transfer to the computer system 30 side.

At this time, the processor of the computer system 30 writes a boundary line for dividing the dark and the bright parts into black and white in the image information input from each camera, and finds the boundary line for finding the boundary between the dark and the bright parts and thin stripes. The coded pattern is distinguished from the background of the photographed image by using an algorithm such as thinning which converts stripes into curves.

In addition, if there are several patterns, patterns corresponding to each other should be found in images taken by different cameras. For this purpose, a method of adding a coded feature shape to the pattern and the color of the pattern to easily find out the unique number of the pattern. Different methods are used to find the same pattern on different images by using color information, and a method of sequentially countering the location information using the location information from the reference pattern.

As shown in FIG. 3, the operation of the computer system extracting three-dimensional data of the object from the image information of the measurement object 40 input through the two cameras 10A and 20B is as shown in FIG. 5. In the following example, using the following description.

As shown in FIG. 6, when the measurement object is photographed through two cameras, that is, the first camera 10A and the second camera 20B, as shown in FIG. 3, the captured image and the first image of the first camera 10A are displayed. In the photographed image of the two cameras 20B, one curve C1, C2 having the same unique number among the lines on the image is acquired.

At this time, for a curve having the same unique number as described above, a straight line F1 connecting an arbitrary point p1 on one curve C1 of the first camera 10A image and the central portion O1 of the lens is The intersection point p2 is represented by the outer pole line F3 projected on the image of the second camera 20B and intersects the curve C2 of the outer pole line F3 and the second camera 20B image.

One straight line F2 is generated by connecting the center portion O2 of the lens with the intersection point p2 intersecting the curve C2 of the image of the second camera 20B as a center.

When the straight line F1 and the straight line F2 obtained as described above are extended to find a point P intersecting in three-dimensional space, the point P is a three-dimensional coordinate P (Xw, Yw on the surface of the object). , Zw).

When the three-dimensional coordinate data is obtained for all points P1, P1-1, ... P1-n on the curve C1 of the image photographed by the first camera 10A through the above operation process, the measurement object ( The coordinates of all points on the three-dimensional curve of 40) can be extracted, and when the coordinates of all the extracted points are connected to form a triangle network, three-dimensional data on the measurement object can be obtained.

Then, when the data of the three-dimensional coordinates of the points for the measurement object 40 is extracted as described above, the shape of the measurement object is extracted by connecting the extracted points to generate surface data.

In the above description, the three-dimensional data of the measurement object is measured by inputting images through two cameras. For example, in order to manufacture a shoe, the foot is measured at various angles such as the instep and the sole of the foot. For example, if you measure multiple directions, move the camera to take measurements, or install multiple cameras around the measurement object and take pictures at the same angle.

As described above, when photographing a measurement object with multiple cameras at various angles, images captured by one camera are used in duplicate. That is, when photographing a measurement object using three cameras, data of three-dimensional coordinates is extracted by using images captured by the first and second cameras, and images captured by the second and third cameras are used. Since the data of three-dimensional coordinates can be extracted by overlapping the images taken by each camera, three-dimensional coordinate data can be extracted by taking images of the measurement object from various directions and various angles with a small number of cameras. .

As an example for this, as shown in FIG. 7, the seven cameras are installed by maintaining a predetermined angle at a predetermined position around the transparent plate on which the foot, which is a measurement target, is placed. The first camera and the second camera are installed to measure the front upper part of the foot wearing the coded clothing, the second camera and the third camera are installed to photograph the left side part of the foot, and the third camera and the fourth camera are installed. It is installed to photograph the rear part, and the third camera and the first camera are installed to photograph the right side of the foot.

Further, in order to measure the sole portion, the fifth to eighth cameras may be provided at appropriate positions so as to overlap the two cameras as described above.

As described above, the present invention takes less measurement time than the conventional measuring device to measure the body to produce a customized product such as shoes, underwear, wig, and has a simple device configuration.

In addition, the conventional non-contact measuring device requires a slit light projection device, a mechanism for moving the projection device, a control device for controlling the light, and the like, and thus, the manufacturing process is complicated and economic efficiency is low. It is difficult and has many points of failure, and it takes a lot of time because it takes a picture while moving the laser, whereas the method proposed in the present invention is very short because three-dimensional data can be obtained by one shooting for each camera. There is an advantage that can be measured in time.

Claims (13)

A material worn in close contact with a measurement object and having a pattern on its outer surface; Image input means for photographing the measurement object wearing the material in close contact with a predetermined angle and extracting image information thereof; Means for extracting three-dimensional coordinates from image information of a measurement object transmitted from the image input means; And And means for extracting the shape of the object to be measured by connecting the extracted points of the three-dimensional coordinates with lines. The method according to claim 1, The pattern of the outer surface of the material to be worn close to the measurement object is encoded, Body information apparatus, characterized in that the video information of the measurement object transmitted from the image input means is also encoded. The method according to claim 1, And the image input means is a plurality of image input means using at least two or more. The method according to claim 3, The plurality of image input means is a body measurement apparatus characterized in that one image input means to take images of different points in duplicate. The method according to claim 2, An encoded pattern of a material in close contact with the measurement object is a stripe. The method according to claim 5, An encoded pattern of a material in close contact with the measurement object uses a different feature shape between stripes. The method according to claim 3, And the three-dimensional coordinate extracting means extracts the shape of the object to be measured by superimposing image information of the plurality of image input means. The method according to claim 3, And the three-dimensional coordinate extracting means performs a binarization operation for dividing the dark portion and the bright portion in black and white from the image information input from the plurality of image input means. The method according to claim 3, The three-dimensional coordinate extracting means, the body measurement apparatus, characterized in that for performing a boundary line operation to find the boundary between the dark portion and the bright portion of the image information input from the plurality of image input means. The method according to claim 3, And the three-dimensional coordinate extracting means performs a thinning operation of converting the stripes into curves when the thin stripes are used in the image information input from the plurality of image input means. Placing a patterned material on the object to be measured in close contact and then placing the patterned material at a predetermined angle on the plurality of image input means; The plurality of image input means may include the steps of photographing a measurement object and transmitting image information thereof to a computer system; The computer system includes the steps of analyzing the received image information through a set algorithm to generate three-dimensional coordinate data of the measurement object; And generating the surface data by connecting the generated three-dimensional coordinate data to extract a shape of the object to be measured. The method according to claim 11, The three-dimensional coordinate data is connected to one point on the curve photographed by one image input means and the lens center of the image input means in a straight line and projected to the other image input means as an outer pole line; Generating another straight line by connecting an intersection point between the outer polarity line projected on the other image input means and the photographed curve with the central portion of the lens; Extracting coordinates of an intersection point between a straight line connecting the lens center of the one image input means with a straight line and a straight line connecting the lens center of the other image input means with a straight line and extracting a three-dimensional coordinate value; Body measurement method, characterized in that. The method according to claim 12, The three-dimensional coordinates extracted from the intersection of the straight line connecting the lens center of the two image input means is performed for all the points on the photographed curve.