KR101689476B1 - Apparatus and method for measuring size of part of body using smart phone - Google Patents

Apparatus and method for measuring size of part of body using smart phone Download PDF

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KR101689476B1
KR101689476B1 KR1020150112648A KR20150112648A KR101689476B1 KR 101689476 B1 KR101689476 B1 KR 101689476B1 KR 1020150112648 A KR1020150112648 A KR 1020150112648A KR 20150112648 A KR20150112648 A KR 20150112648A KR 101689476 B1 KR101689476 B1 KR 101689476B1
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body part
distance
center
length
smartphone
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최영진
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
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    • G06T7/60—Analysis of geometric attributes
    • A—HUMAN NECESSITIES
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    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
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    • A41H1/02—Devices for taking measurements on the human body
    • A—HUMAN NECESSITIES
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    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A61B5/1072—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring distances on the body, e.g. measuring length, height or thickness
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    • G06Q30/06—Buying, selling or leasing transactions
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
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    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
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Abstract

An apparatus and a method for measuring a body size using a smartphone are disclosed. A camera sensor provided in a smart phone and configured to photograph an image of a predetermined body part of a user; An ultrasonic sensor coupled to the smart phone and configured to transmit ultrasonic waves to a predetermined body part of a user and receive and amplify ultrasonic waves reflected from a predetermined body part; A distance measurement module installed in the smart phone and measuring a distance to a center of the user's body part and a distance to one end of the body part using the reflection time of the ultrasonic wave received by the ultrasonic sensor; An angle measurement module installed in the smart phone and measuring an incident angle between a center of the body part and one end of the body part; A database module provided in the smart phone and storing the number of pixels constituting a length of 1 cm in the image taken by the camera sensor in advance according to the display resolution and measurement distance of the smartphone; It is installed in the smartphone and calculates the ratio of the length between the center of the body part and one side of the body by applying the distance from the distance measurement module to the measured center distance and the distance to one end and the incident angle measured by the angle measurement module to the trigonometrical method And calculates the actual length of the center of the body part and the one side of the body part using the ratio of the calculated length and the number of pixels stored in the database module in advance and calculates the total length of the body part or the entire circumference of the body part using the calculated actual length And calculates the body size calculation module to be calculated.

Description

[0001] APPARATUS AND METHOD FOR MEASURING SIZE OF PART OF BODY USING SMART PHONE [0002]

More particularly, the present invention relates to an apparatus and method for measuring a user's body size using a smart phone, and more particularly, To an apparatus and method for allowing a user to easily and accurately select a product size in an online shopping mall.

In recent years, clothing is often purchased at Internet shopping malls. You can see if the size is right for you to wear clothes yourself, but at the internet shopping mall, you can purchase your own clothes by entering your body size.

By the way, most customers do not know exactly what their body size is. Although we know the approximate size of clothes such as small, large, and XLarge, the size of each part of the body, such as waist circumference, chest circumference, leg length, arm length, and neck circumference, I often do not know.

In the case of women's apparel, you should know exactly the waist circumference, the chest circumference, etc. You can buy clothes that fit properly to you. Even if you buy a dress shirt for men, you should know your arm length, neck circumference, You can buy clothes that suit you.

In addition, since the method of displaying sizes and sizes is different for overseas clothing sales sites, it is very inconvenient to select a size and input a size chart even if the size is known.

Japanese Patent Laid-Open Publication No. 10-2013-0081037 discloses a configuration for directly measuring a user's body size on-line.

Patent Document 10-2013-0081037 is configured to be able to measure the circumference of the body. However, in Japanese Patent Laid-Open Publication No. 10-2013-0081037, at least two cameras are arranged at different angles to capture a user and use them to generate a 3D stereoscopic image. The stereoscopic image is analyzed to measure the peripheral size. However, in such a system, since at least two cameras must be arranged, there is a problem that it is somewhat difficult for a customer who purchases clothes in a household to measure the size. Also, the size of the body part that is needed immediately when purchasing clothes needs to be measured. Such a measuring method is very complicated and the system implementation is also difficult.

Therefore, a more realistic and convenient body part size measuring means is required.

10-2013-0081037

An object of the present invention is to provide a device for measuring a body size using a smartphone.

Another object of the present invention is to provide a method of measuring body size using a smartphone.

According to an aspect of the present invention, there is provided an apparatus for measuring a body size using a smartphone, comprising: a camera sensor provided in a smart phone and configured to photograph an image of a predetermined body part of a user; An ultrasonic sensor coupled to the smartphone and configured to transmit ultrasonic waves to a predetermined body part of a user and receive and amplify ultrasonic waves reflected from the predetermined body part; A distance measuring module installed in the smartphone and measuring a distance to a center of the user's body part and a distance to one end of the body part using the reflection time of the ultrasonic wave received by the ultrasonic sensor; An angle measuring module installed in the smartphone and measuring an incident angle between a center of the body part and one side of the body part; A database module provided in the smart phone and storing the number of pixels constituting a length of 1 cm in an image taken by the camera sensor in advance according to display resolutions and measurement distances of the smartphone; A distance between the center of the body part and one side of the body part, which is installed in the smartphone, and the distance to the center measured by the distance measuring module and the distance to one end thereof and the incident angle measured by the angle measuring module, And calculates the actual length of the center of the body part and the one end of the body part by using the ratio of the calculated length and the number of pixels stored in advance in the database module, And a body size calculating module for calculating an overall length of the part or an entire circumference of the body part.

At this time, the body part may be composed of any one of head, neck, chest, waist, buttock, arm, wrist, thigh and ankle.

The body size calculation module may calculate an error between the center of the body part and the measured angle of incidence between the center of the body part and one side of the body part and the calculated total length or total circumference according to the following table And [Table]

Figure 112015077399678-pat00001
≪ / RTI >

According to another aspect of the present invention, there is provided a method of measuring a body size using a smartphone, the method comprising: capturing an image of a predetermined body part of a user by a camera sensor; The ultrasonic sensor transmits ultrasonic waves to the predetermined body part and receives and reflects the ultrasonic waves reflected from the predetermined body part; Measuring a distance to the center of the user's body part and a distance to one end of the body part using the reflection time of the ultrasonic wave received by the distance measurement module by the ultrasonic sensor; Measuring an angle of incidence between a center of the body part and an end of the body part; The body size calculation module applies the trigonometrical method to the distance measured from the distance measurement module to the center and the distance to one end and the incident angle measured by the angle measurement module to calculate the ratio of the length between the center of the body part and the one- ; Wherein the body size calculation module is determined according to a display resolution of the smartphone and a distance to the center, and the number of pixels constituting a distance of 1 cm from the image taken by the camera sensor is set to a ratio of the calculated length Calculating an actual length between the center of the body part and one side of the body part; The body size calculating module may calculate the entire length of the body part or the entire circumference of the body part using the calculated actual length of the center part and one end of the body part.

At this time, the body part may be composed of any one of head, neck, chest, waist, buttock, arm, wrist, thigh and ankle.

Meanwhile, the body size calculating module is determined according to the display resolution of the smartphone and the distance to the center, and the number of pixels constituting the distance of 1 cm from the image taken by the camera sensor is calculated as the Wherein the step of calculating the actual length of the center of the body part and the one end of the body part comprises the steps of measuring an incident angle between the measured center of the body part and one side of the body part and the calculated total length or overall circumference The table is configured to correct the total length or the entire circumference by the following table,

Figure 112015077399678-pat00002
≪ / RTI > Here, since the ultrasonic waves used in the table are low-directivity ultrasonic waves, the measured values vary depending on the type of ultrasonic waves.

According to the apparatus and method for measuring body size using the smartphone, it is possible to easily and accurately measure not only the user's key but also the length and circumference of a specific body part by combining only the ultrasonic sensor with the smart phone.

It has the advantage of being very convenient and accurate because it can be easily measured and corrected without being greatly influenced by the angle of photographing itself.

1 is a block diagram of an apparatus for measuring a body size using a smartphone according to an embodiment of the present invention.
2 is a flowchart illustrating a method of measuring a body size using a smartphone according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

1 is a block diagram of an apparatus for measuring a body size using a smartphone according to an embodiment of the present invention.

Referring to FIG. 1, a body size measuring apparatus using a smartphone 100 according to an embodiment of the present invention includes a camera sensor 110, an ultrasonic sensor 120, A measurement module 130, an angle measurement module 140, a database module 150, and a body size calculation module 160.

The body size measuring apparatus 100 may be implemented in the smartphone 10 of the user.

Here, the camera sensor 110 may use hardware provided in the smartphone 10, and the ultrasonic sensor 120 may be configured to be used by being coupled through a terminal provided in the smartphone 10. The distance measurement module 130, the angle measurement module 140, the database module 150, and the body size calculation module 160 may be installed in an application form on the smartphone 10.

Since the body size measuring apparatus 100 only requires the ultrasonic sensor 120 to be connected to the smartphone 10, there is an advantage that it is very convenient in that the user is not particularly required in terms of equipment.

The body size measuring device 100 can easily measure the length of a specific body part such as the length of an arm, a leg, and a trunk as well as a user's key. The body size measuring device 100 can measure a length of a body part such as a head, a neck, a chest, a waist, a thigh, , Arms, wrists, etc., can be easily and accurately measured.

The body size measuring apparatus 100 can accurately measure the size of the body of the user directly so that the user can select and purchase clothes of the exact size when purchasing clothes through the Internet.

Hereinafter, the detailed configuration will be described.

The camera sensor 110 may be provided in the smartphone 10.

The camera sensor 110 may be configured to capture an image of a predetermined body part of the user.

When a user takes his / her own smartphone 10 in a self-photographing mode, the length of the specific body part taken is calculated and displayed on the smartphone 10 automatically.

The user does not need to have a plurality of cameras separately and does not need to adjust the photographing angle or perform a hard work to capture the photographing timing.

The ultrasonic sensor 120 may be configured to be coupled to the smartphone 10 and connected to the smartphone 10 through a terminal provided in the smartphone 10 so that the ultrasonic sensor 120 can be operated by the smartphone 10.

The ultrasonic sensor 120 may be configured to transmit ultrasonic waves to a predetermined body part of the user. The ultrasonic sensor 120 may be configured to receive and amplify ultrasonic waves reflected from a predetermined body part.

More specifically, the ultrasonic sensor 120 may be configured to transmit an ultrasonic wave by directing a central part of a specific body part and one end thereof. For example, it can be configured to transmit ultrasonic waves toward the center of the front photograph of the user and transmit ultrasound waves toward one side of the waist side, i.e., one side.

Here, it is preferable that the ultrasonic sensor 120 is configured to transmit ultrasonic waves at a distance of at least 20 cm to a maximum of 2-3 m. Ultrasound is not highly directional, so it is not easy to measure if the distance exceeds 6 m.

As described above, since the ultrasonic wave is not highly oriented, the reflection times of the ultrasonic waves reflected from the body part are different from each other. When the ultrasonic wave is reflected from the body part of the user and returned, the reflection time of the ultrasonic wave that is reflected first and returned may be used for calculating the straight line distance.

The ultrasonic sensor 120 may be configured to transmit the amplified signal to the distance measurement module 120 and the angle measurement module 140 of the smartphone 10.

The distance measurement module 130 may be installed in an application form on the smartphone 10.

The distance measurement module 130 measures the distance to the center of the user's body part and the distance to one end of the body part using the reflection time of the ultrasonic waves received and amplified by the ultrasonic sensor 120 .

Here, the distance measurement module 130 may be configured to measure the linear distance using the reflection time of the ultrasonic waves and the traveling speed of the ultrasonic waves. The reflection time of the ultrasonic wave that is firstly reflected and returned in the ultrasonic wave can be used for the measurement of the linear distance.

The angle measurement module 140 may be installed in an application form on the smartphone 10.

The angle measurement module 140 may be configured to measure the angle of incidence between the center of the body part and one side of the body part.

The angle measurement module 140 may be configured to measure and output an angle of incidence when the ultrasonic waves are transmitted toward the center of the body part and an angle when the ultrasonic waves are transmitted toward one side of the body part at an incident angle.

The database module 150 may be stored in the memory of the smartphone 10 and may be configured to store the number of pixels constituting a length of 1 cm in the image captured by the camera sensor 110. [ At this time, the number of pixels according to the display resolution of the smartphone 10 and the measurement distance thereof may be stored in advance.

When transmitting ultrasound at a distance of 20 cm to a user's smartphone 10 and taking an image and transmitting an ultrasonic wave at a distance of 2 m and taking an image, the number of pixels constituting a length of 1 cm on the display must be different none. That is, at the same resolution, more pixels can be included in a 1 cm image taken at a distance of 20 cm. However, this pixel number varies depending on the display resolution inherent in each smartphone 10.

Therefore, the number of pixels included in the length of 1 cm on the image by the display resolution and the measurement distance is calculated in advance and stored in the database.

The length of 1 cm has the same function as a kind of scale. If the user takes an image at a specific distance and transmits ultrasonic waves, the number of pixels included in 1 cm on the image at the resolution of the smartphone 10 It can be said that it is predetermined. As such, the number of pixels per display resolution and measurement distance pre-built in the database module 150 can be used to calculate the actual length of a specific body part in the image. In other words, when the number of pixels corresponding to the body length of a specific body part in the image is compared with the number of pixels of 1 cm previously stored in the image, the actual length of the specific body part can be calculated proportionally.

The body size calculation module 160 may be installed in an application form on the smartphone 10.

The body size calculation module 160 applies the trigonometric function method to the distance to the center of the specific body part measured by the distance measurement module 130 and the distance to one end thereof and the incident angle measured by the angle measurement module 140 And calculate the ratio of the length between the center and one end of the body part.

Here, ① the distance to the center of the specific body part, ② the distance to the end of the body part, and ③ the length between the center and one end of the body part form a right triangle, ③ The length between the center and one side of the body part can be regarded as a right angle. And, since the angle of incidence between the center of a specific body part and the distance to one side of the body is known, the ratio of the length between the center of the body part and one side can be calculated.

The body size calculation module 160 calculates the actual length of the center and one side of the body part using the ratio of the length calculated by the distance measurement module 130 and the number of pixels stored in the database module 150 Lt; / RTI >

As described above, the display resolution of the smartphone 10 has already been determined and its distance to the center of a specific body part is known.

The body size calculation module 160 calculates the number of pixels included in the ratio of the length between the center and one side of the body part to the number of pixels of 1 cm length stored in the database module 150 in the distance measurement module 130, And calculate the actual length between the center and one end of the region.

The body size calculation module 160 may be configured to calculate the entire length of the body part or the entire circumference of the body part using the calculated actual length.

For example, in the case of the waist, ③ the actual length calculated by the ratio of the length between the center of the body part and one end becomes the length a from the center (navel) to the side.

In the side image of the body, the actual length b of the lateral side of the body can be calculated by the ratio of the length between the center of the body part and one side in the above manner.

The circumference of the entire waist can be calculated by simple summing like 4a + 2b.

Here, people who are not fattened in their waist or belly can be added together like 4a + 2b, but the circumferential length of the front side of the abdomen and the back circumference of the back side are not the same. Thus, both the fleshy person and the non-fleshy person can be added together as 2a + 2b + 2c to calculate the circumference of the entire waist. Here, 2c is the circumferential length of the rear back surface.

More specifically, it can be generally formulated as shown in Equation (1) below.

Figure 112015077399678-pat00003

Body size calculation module 160 can easily and accurately calculate body sizes such as head circumference, head circumference, neck circumference, chest circumference, waist circumference, hip circumference, wrist circumference, thigh circumference, and ankle circumference in this manner.

Of course, the body size calculation module 160 can also easily and accurately calculate body part lengths such as leg length, arm length, body length, and neck length.

In Equation (1), however, a portion overlapping in the frontal image and the lateral image of the body occurs. Because the body has the shape of an elliptical cylinder, a portion of the body part that is photographed in both the frontal and lateral images is created. Therefore, the body size calculation module 160 needs to exclude a part of this overlapping body part as shown in the following equation (2).

Figure 112015077399678-pat00004

The body size calculating module 160 may be configured to calculate the circumference size by subtracting the actual length of the portion set as the overlapping portion by the touch of the user in the front image or the back image.

Meanwhile, the body size calculation module 160 is configured to correct the error of the actual length by applying the incident angle between the center of the body part and the one side of the body part and the actual length calculated from the center, .

Figure 112015077399678-pat00005

Since ultrasonic waves are not highly directional, even if ultrasonic waves are transmitted toward a specific direction, the ultrasonic waves spread with a certain width of the beam.

Table 1 shows the values obtained by experimentally obtaining the error when the length of the body part was measured at various incidence angles using an ultrasonic wave and when the measurement was actually performed using a ruler.

When the incident angle is 90 degrees, if the distance to the center measured by the distance measuring module 120 and the incident angle are 90 degrees, the measured value is substantially similar to the actual distance value. However, it can be seen that as the incident angle decreases, that is, as the incident angle becomes oblique, the error increases.

The body size calculation module 160 can accurately correct the entire length and the entire circumference of the body part by applying such experimental errors.

2 is a flowchart illustrating a method of measuring a body size using a smartphone according to an embodiment of the present invention.

Referring to FIG. 2, first, the camera sensor 110 captures an image of a predetermined body part of a user (S101).

Here, the body part may be composed of any one of head, neck, chest, waist, hip, arm, wrist, thigh and ankle.

Next, the ultrasonic sensor 120 transmits ultrasonic waves to a predetermined body part and receives and reflects ultrasonic waves reflected from a predetermined body part (step S102).

Next, the distance measurement module 130 measures the distance to the center of the user's body part and the distance to one end of the body part using the reflection time of the ultrasonic wave received by the ultrasonic sensor 120 S103).

Next, the angle measurement module 140 measures an incident angle between the center of the body part and one side of the body part (S104).

Next, the body size calculation module 160 applies the trigonometrical method to the measured distance from the distance measurement module to the center and the distance to one end and the incident angle measured by the angle measurement module, (S105). ≪ / RTI >

Next, the body size calculation module 160 calculates the number of pixels constituting the distance of 1 cm from the image photographed by the camera sensor, according to the display resolution and the distance to the center of the smartphone 10 The actual length of the center of the body part and the length of one side of the body part is calculated (S106).

At this time, the body size calculation module 160 corrects the error of the entire length or the entire circumference according to the following table according to the incidence angle between the center of the measured body part and one side of the body part and the calculated total length or the entire circumference .

Figure 112015077399678-pat00006

Next, the body size calculation module calculates the entire length of the body part or the entire circumference of the body part using the calculated center length of the body part and the actual length of the one side part (S107).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. There will be.

110: camera sensor
120: Ultrasonic sensor
130: Distance measurement module
140: Angular measurement module
150: Database module
160: Body size calculation module

Claims (4)

A camera sensor provided in a smart phone and configured to photograph an image of a predetermined body part of a user;
An ultrasonic sensor coupled to the smartphone and configured to transmit ultrasonic waves to a predetermined body part of a user and receive and amplify ultrasonic waves reflected from the predetermined body part;
A distance measuring module installed in the smartphone and measuring a distance to a center of the user's body part and a distance to one end of the body part using the reflection time of the ultrasonic wave received by the ultrasonic sensor;
An angle measuring module installed in the smartphone and measuring an incident angle between a center of the body part and one side of the body part;
A database module provided in the smart phone and storing the number of pixels constituting a length of 1 cm in an image taken by the camera sensor in advance according to display resolutions and measurement distances of the smartphone;
A distance between the center of the body part and one side of the body part, which is installed in the smartphone, and the distance to the center measured by the distance measuring module and the distance to one end thereof and the incident angle measured by the angle measuring module, And calculates the actual length of the center of the body part and the one end of the body part by using the ratio of the calculated length and the number of pixels stored in advance in the database module, And a body size calculating module for calculating an overall length of the body part or an entire circumference of the body part,
Wherein the body part comprises:
Head, neck, chest, waist, hip, arm, wrist, thigh and ankle,
Wherein the body size calculating module comprises:
Wherein the angle of incidence between the center of the body part measured at one side of the body part and the calculated angle of incidence between the center of the body part and the calculated angle of incidence of the body part, The length or the entire circumference is corrected by the following table according to the total length or the entire circumference,
[table]
Figure 112016081363765-pat00011

ego,
Wherein the body size calculating module comprises:
The circumference being measured according to the following equation to measure the circumference of any one of the head, neck, chest, waist, hip, arm, wrist, thigh and ankle,
[Mathematical Expression]
Figure 112016081363765-pat00012

And measuring the size of the body using the smartphone. delete Capturing an image of a predetermined body part of a user by a camera sensor;
The ultrasonic sensor transmits ultrasonic waves to the predetermined body part and receives and reflects the ultrasonic waves reflected from the predetermined body part;
Measuring a distance to the center of the user's body part and a distance to one end of the body part using the reflection time of the ultrasonic wave received by the distance measurement module by the ultrasonic sensor;
Measuring an angle of incidence between a center of the body part and an end of the body part;
The body size calculation module applies the trigonometrical method to the distance measured from the distance measurement module to the center and the distance to one end and the incident angle measured by the angle measurement module to calculate the ratio of the length between the center of the body part and the one- ;
Wherein the body size calculation module is determined according to a display resolution of the smartphone and a distance to the center, and the number of pixels constituting a distance of 1 cm from the image taken by the camera sensor is set to a ratio of the calculated length Calculating an actual length between the center of the body part and one side of the body part;
Calculating a total length of the body part or an entire circumference of the body part by using the actual length of the center part and one side end of the calculated body part,
Wherein the body part comprises:
Head, neck, chest, waist, hip, arm, wrist, thigh and ankle,
Wherein the body size calculation module is determined according to a display resolution of the smartphone and a distance to the center, and the number of pixels constituting a distance of 1 cm from the image taken by the camera sensor is set to a ratio of the calculated length Wherein the step of calculating the actual length between the center and the one end of the body part comprises:
Wherein the angle of incidence between the center of the body part measured at one side of the body part and the calculated angle of incidence between the center of the body part and the calculated angle of incidence of the body part, The length or the entire circumference is corrected by the following table according to the total length or the entire circumference,
[table]
Figure 112016081363765-pat00013

And is configured to measure the perimeter according to the following equation to measure the perimeter of the head, neck, chest, waist, hip, arm, wrist, thigh, and ankle,
[Mathematical Expression]
Figure 112016081363765-pat00014

And measuring the body size using the smartphone.
delete
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