KR20210067833A - Apparatus and method for classifying foot shape - Google Patents

Abstract

An apparatus includes a foot shape analysis part that classifies the foot of a user into a plurality of types based on the photograph of the sole the foot of the user, and analyzes the foot shape information of the user and a foot information processing part for processing the foot shape information. The foot shape analysis part classifies the foot of the user based on a foot length-foot width ratio based on the photograph of the sole of the foot and the foot shape of the user based on a difference in length between a big toe and an index toe. It is possible to classify the foot shape using the photograph of the sole the foot without a separate external device.

Description

A foot sorting device and a foot sorting method {APPARATUS AND METHOD FOR CLASSIFYING FOOT SHAPE}

The present invention relates to image processing, and more particularly, to a foot classification apparatus and a foot classification method using a photograph of a sole.

Compared to the past, the senior generation in modern society is pursuing a diverse life with economic power and time. Due to the increase in the amount of activity of the senior generation, the number of people suffering from foot discomfort or foot disease is increasing. The foot is an area that is constantly under pressure in proportion to the amount of individual activity. Because of the physical characteristics of the feet that are farthest from the heart, the feet are the parts of the body that are prone to various body inconsistencies, including impaired blood circulation. Therefore, in order to prevent foot-related diseases, there is an increasing movement to provide shoes suitable for individual foot characteristics.

In general, shoes are mass-produced in factories. Ready-made shoes mass-produced in factories are manufactured to reflect the shape of an average person's foot, and most of them are provided to consumers in standardized size standards, so it is impossible to take advantage of the sole characteristics of each individual. If you wear shoes that do not reflect the sole characteristics of each individual, there may be a problem in that it is difficult to effectively distribute the pressure applied to the soles. As a result, the impact on the foot may not be properly alleviated or pain may be caused.

In order to overcome the problems of ready-made shoes, it is necessary to provide a customized shoe that reflects an individual's foot type. In order to fully reflect an individual's foot, the last reflecting the characteristics of the individual's foot must be individually created. However, individual last production may undermine the economic rationality of shoe production. Therefore, research on a method that can promote economic rationality while satisfying social needs for customized shoes is being made in various fields.

An object of the present invention is to provide a foot type classification device and a foot type classification method using a photograph of the sole without a separate external device.

A foot classification apparatus according to an embodiment of the present invention classifies the user's foot into a plurality of types based on a photograph of the user's foot, and a foot analysis unit for analyzing the user's foot information and foot information processing the foot information a processing unit, wherein the foot analysis unit classifies the foot of the user based on a foot length-toe width ratio and a difference in length between the big toe and the index toe based on the photograph of the sole of the foot.

For example, the foot analysis unit A sole photo input unit capable of inputting a picture of the user's sole, a sole image recognition unit for image processing and image processing of the picture of the sole of the foot, and extracting the sole information of the user; and a foot classification unit for classifying the user's foot based on the sole information.

For example, the sole information includes at least one of the length of the foot, the width of the foot, the length of the big toe, and the length of the index toe.

For example, the foot information processing unit includes a foot information input unit for receiving the user's foot information output from the foot analysis unit, and a foot information storage unit for storing the foot information information.

For example, it further includes a foot information application unit for collectively providing the foot information stored in the foot information processing unit.

For example, the foot information application unit is a cloud server.

For example, the foot analysis unit classifies the user's foot into the first type, the second type, or the third type based on the average value of the foot length-toe width ratio and the standard deviation of the foot length-toe width ratio.

For example, the foot analysis unit classifies the user's foot as a fourth type when the length of the big toe is longer than the length of the index toe, and when the length of the big toe is the same as the length of the index toe, the user's foot The foot is classified as a fifth type, and when the length of the big toe is shorter than the length of the index toe, the user's foot is classified as a sixth type.

For example, the foot type analysis unit is classified into the first type to the third type according to the average value of the foot length-foot width and the standard deviation of the foot length-foot width, and the length of the big toe and the length of the index toe. The user's foot type is classified by combining the classification into the fourth type to the sixth type.

In the method for classifying a foot using a photograph of a user's sole according to an embodiment of the present invention, the method for classifying a foot of a foot classification apparatus using a photograph of a user's foot includes the steps of: receiving an input of a photograph of the user's foot; converting the photograph of the foot into an image; step, classifying the user's foot based on the image, receiving information on the user's foot, and The step of classifying the foot includes the step of storing the foot information, wherein the step of classifying the foot type classifies the foot of the user based on a foot length-toe width ratio and a difference in length between the big toe and the index toe based on the photograph of the sole.

For example, converting the photo of the sole into an image includes extracting information on the sole of the foot of the user.

For example, the sole information includes at least one of the length of the foot, the width of the foot, the length of the big toe, and the length of the index toe.

For example, the method further includes a foot information application step of providing the stored foot information as a collective data.

For example, the user's foot is classified into type 1, type 2 or type 3 based on an average value of the foot length-toe width ratio and a standard deviation of the foot length-toe width ratio.

For example, when the length of the big toe is longer than the length of the index toe, the user's foot is classified as a fourth type, and when the length of the big toe is the same as the length of the index toe, the user's foot is classified as a fifth type. type, and when the length of the big toe is shorter than the length of the index toe, the user's foot is classified as a sixth type.

For example, the classification into the first type to the third type according to the average value of the foot length-foot width and the standard deviation of the foot length-foot width, and the fourth type according to the length of the big toe and the length of the index toe The user's foot is classified by combining the classification into the type to the sixth type.

According to the present invention, it is possible to provide a foot type classification apparatus and a foot type classification method for extracting key characteristics of the foot without separate time and place restrictions, and classifying the foot type by reflecting the characteristics.

The foot information extracted from the foot classification apparatus according to the present invention may be stored in an open database and utilized as collective data.

1 is a block diagram illustrating a foot type classification apparatus according to an embodiment of the present invention.
2 is a block diagram illustrating a foot analysis unit according to an embodiment of the present invention.
3A and 3B are diagrams for explaining a foot type classification method of a foot type classification unit according to an embodiment of the present invention.
4 is a block diagram illustrating a foot information processing unit according to an embodiment of the present invention.
5 is a block diagram illustrating a foot type classification apparatus according to another embodiment of the present invention.
6 is a flowchart illustrating a method for classifying a foot according to an embodiment of the present invention.
7 is a flowchart illustrating a method for classifying a foot according to an embodiment of the present invention.
8 is a flowchart illustrating a method for classifying a foot according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described clearly and in detail to the extent that those skilled in the art can easily practice the present invention.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. As used herein, the singular also includes the plural unless the phrase specifically dictates otherwise. As used herein, “comprises and/or comprises” refers to the presence or addition of one or more other components, steps, acts and/or elements to a stated element, step, operation and/or element. do not exclude

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in the meaning commonly understood by those of ordinary skill in the art to which the present invention pertains. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly. In this specification, the same reference numerals may refer to the same elements throughout.

1 is a block diagram illustrating a foot type classification apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , an apparatus 100a for classifying a foot according to an embodiment of the present invention may include a foot analysis unit 110 and a foot information processing unit 120 . The foot analysis unit 110 may receive a picture of the user's sole of the foot. The foot analysis unit 110 may analyze the input foot photo and classify the user's foot based on the result. The classification method of the foot type analysis unit 110 may be determined according to a program included in the foot type classification apparatus 110a. In an embodiment of the present invention, a program for classifying the user's foot into nine pre-classified shapes may be set.

The foot information processing unit 120 may receive the user's foot information from the foot analysis unit 110 . The input user's foot information may be converted into data by the foot information processing unit 120 . The foot information processing unit 120 may store data based on the user's foot information.

A feature of the present invention is to classify and store the user's foot after image processing using a photograph of the user's sole without a separate external device or device. In addition, by implementing the method for classifying the foot according to the present invention in software, it can be used to classify the user's foot without a separate device. For example, software may be implemented as a computer program or application. The present invention implemented in software can provide a foot type classifier capable of increasing portability. The present invention does not simply extract the external features of the foot, but has the feature that types can be classified based on the extracted external features of the foot.

2 is a block diagram illustrating a foot analysis unit according to an embodiment of the present invention.

Referring to FIG. 2 , the foot analysis unit 110 according to an embodiment of the present invention may include a sole photo input unit 111 , a sole image recognition unit 112 , and a foot type classification unit 113 . The sole photo input unit 111 may receive a user's sole photo input. The foot photo may be input in the form of an image file. Alternatively, when the present invention is driven by software, the image may be directly captured and inputted from a camera included in a terminal equipped with the software. The format and type of the input sole photo is not limited. The input sole photo may be transmitted to the sole image recognition unit 112 .

The sole image recognition unit 112 may image the sole photo input from the sole photo input unit 111 . The sole image recognition unit 112 may model the input sole photo to extract the sole boundary line and process the image. The sole image recognition unit 112 may measure the length of the foot, the width of the foot, the length of the big toe, the length of the index toe, and the like through the image-processed sole boundary line. Through the image processing of the sole image recognition unit 112, it is possible to improve the accuracy of the user's foot feature extraction using the present invention.

The foot classification unit 113 may classify the user's foot through the image processed by the sole image recognition unit 112 . In an embodiment of the present invention, the user's foot may be classified into nine types through a two-step process. The foot classification unit 113 may classify the user's foot based on the length of the foot, the width of the foot, the length of the big toe, the length of the index toe, etc. measured by the sole image recognition unit 112 . A user's foot classification method of the foot classification unit 113 will be described later in detail with reference to FIGS. 3A and 3B .

3A and 3B are diagrams for explaining a foot type classification method of a foot type classification unit according to an embodiment of the present invention.

3A shows a method of measuring a user's foot length-toe width ratio from a sole image, and classifying the user's foot into three types based on this. In the present invention, the length and width of the sole may be measured from the sole boundary line image-processed by the sole image recognition unit 112 . The length of the sole means the vertical distance between the uppermost point and the lowermost point of the sole boundary line. In addition, the width of the sole means the horizontal distance between the points on the outermost side of the sole boundary line. Footprint classification based on the length and width of the sole may be based on a foot length-toe width ratio.

는 발길이-발폭 비율,

는 발폭, 그리고

은 발길이를 의미한다. 표 1에서

는 수학식 1로부터 도출된 발길이-발폭 비율,

는 발길이-발폭 비율의 평균, 그리고

는 발길이-발폭 비율의 표준 편차를 의미한다. 발길이-발폭 비율의 평균이란, 전체 인구 또는 본 장치에 의하여 축적된 데이터에 기반한 발길이-발폭 비율 표본의 평균 값을 의미한다. 발길이-발폭 비율의 표준 편차란, 전체 인구 또는 본 장치에 의하여 축적된 데이터에 기반한 발길이-발폭 비율 표본의 표준 편차를 의미한다.The foot length-toe width ratio may be derived according to Equation 1 below. Based on the foot length-toe width ratio, the user's foot may be classified into an elongate type, a normal type, or a broad type as shown in Table 1 below. in Equation 1

is the foot-to-foot ratio,

is the explosion, and

means footsteps. in table 1

is the foot length-foot width ratio derived from Equation 1,

is the average of the foot-to-foot ratio, and

is the standard deviation of the foot-to-foot ratio. The average of the foot-to-foot ratio means an average value of the total population or a sample of the foot-to-foot ratio based on data accumulated by the device. The standard deviation of the foot-to-foot ratio means the standard deviation of the total population or a sample of the foot-to-foot ratio based on data accumulated by this device.

elongated normal broad type

3B shows a method of measuring the length of the user's big toe and index toe from the sole image, and classifying the user's foot into three types based on this. In the present invention, the length difference between the big toe toe1 and the index toe toe2 may be measured from the sole boundary line image-processed by the sole image recognition unit 112 . The difference in length between the big toe toe1 and the index toe toe2 means a vertical distance between the uppermost point of the big toe toe1 and the uppermost point of the index toe toe2 . Based on the difference in length between the big toe toe1 and the index toe toe2, the user's foot type may be classified into an Egyptian type, a Roman type, or a Greek type as shown in Table 2 below.

toe1>toe2 toe1=toe2 toe1<toe2 Egyptian Roman Greek

The apparatus and method for classifying a foot according to an embodiment of the present invention can classify a user's foot into nine types through the foot image classification criteria presented in Tables 1 and 2. In an embodiment of the present invention, it has been described that the foot type is classified using the difference in length between the big toe (toe1) and the index toe (toe2) after the foot type classification based on the foot length-toe width ratio, but the big toe (toe1) and the index toe After the foot type classification using the length difference of (toe2), it is okay to perform the foot type classification based on the foot length-toe width ratio. In conclusion, according to the apparatus and method for classifying a foot according to an embodiment of the present invention, the user's foot may be classified into nine types shown in Table 3.

toe1>toe2 Elongated/Egyptian Normal/Egyptian gangster type / egyptian type toe1=toe2 elongated/roman Normal/Roman Opposite type/Roman type toe1<toe2 Elongated/Greek Normal/Greek Wide end/Grease type

4 is a block diagram illustrating a foot information processing unit according to an embodiment of the present invention.

Referring to FIG. 4 , the foot information processing unit 120 according to an embodiment of the present invention may include a foot information input unit 121 and a foot information storage unit 122 . The foot information input unit 121 may receive information on the user's foot type classified by the classification method shown in FIGS. 3A and 3B described above by the foot analysis unit 110 (refer to FIG. 1 ). The foot information input unit 121 may convert the input user's foot type into data.

The foot information storage unit 122 may store the user's foot information data data from the foot information input unit 121 . When the present invention is implemented as a device, the foot information storage unit 122 may be implemented as a storage (storage). Alternatively, when the present invention is implemented in the form of software, the foot information storage unit 122 may be implemented as a storage space on a cloud server or network capable of storing foot information as well as storage.

5 is a block diagram illustrating a foot type classification apparatus according to another embodiment of the present invention.

5 illustrates another embodiment of the present invention, the foot type classification apparatus 100b may include a foot type analysis unit 110 , a foot type information processing unit 120 , and a foot type information application unit 130 . The foot analysis unit 110 may receive a picture of the user's sole of the foot. The foot analysis unit 110 may analyze the input foot photo and classify the user's foot based on the result. The classification method of the foot type analysis unit 110 may be determined according to a program included in the foot type classification apparatus 110b. In an embodiment of the present invention, a program for classifying the user's foot into the nine types described above with reference to FIGS. 3A and 3B may be set.

The foot information processing unit 120 may receive the user's foot information from the foot analysis unit 110 . The input user's foot information may be converted into data by the foot information processing unit 120 . The foot information processing unit 120 may store data based on the user's foot information.

The foot information application unit 130 may use the user's foot information that has been converted into data by the foot information processing unit 120 and stored. For example, the foot information application unit 130 may be commercially used by collecting the stored user's foot data to form collective data and building a database. The user of the software to which the foot classification apparatus and the foot classification method according to the present invention are applied is granted access to the foot information application unit 130, and the user is a buyer in custom shoe production, shoe information confirmation and used transaction from foot data. and the seller's foot match can be determined.

6 is a flowchart illustrating a method for classifying a foot according to an embodiment of the present invention.

In step S110, the sole photo input unit 111 (refer to FIG. 2) included in the foot type classification apparatus 100a (refer to FIG. 1) according to an embodiment of the present invention may receive the user's sole photo. The user's sole photo may be input in the form of an image file. Alternatively, when the present invention is driven by software, the image may be directly captured and inputted from a camera included in a terminal equipped with the software. The format and type of the input sole photo is not limited.

In step S120 , the sole image recognition unit 112 (refer to FIG. 2 ) included in the foot type classification device 110a may convert the input user's sole image. The sole image recognition unit 112 may model the input sole photo to extract the sole boundary line and process the image. The sole image recognition unit 112 may measure the length of the foot, the width of the foot, the length of the big toe, the length of the index toe, and the like through the image-processed sole boundary line.

In step S130, the foot classification unit 113 (refer to FIG. 2) included in the foot classification device 110a may classify the user's foot into nine types through the user's sole information measured by the sole image recognition unit 112. have. The foot type classification unit 113 may classify the user's foot into an elongate type, a normal type, or a broad type based on a foot length-toe width ratio of the user's sole image. Also, the foot type classification unit 113 may classify the user's foot into an Egyptian, Roman, or Greek type based on a difference in length between the user's big toe and index toe. That is, in the foot classification unit 113, the user's foot may be classified into a total of nine types through a two-step classification process.

In step S140 , the foot information input unit 121 (refer to FIG. 4 ) included in the foot classification apparatus 100a may receive the user's foot information output from the foot analysis unit 110 . The foot information input unit 121 includes the user's foot type classified by the foot classification unit 113 of the foot analysis unit 110 and the foot length, foot width, and big toe length of the sole image measured by the sole image recognition unit 112 . and information such as the length of the index toe may be input.

In step S150 , the foot information storage unit 122 (refer to FIG. 4 ) included in the foot classification apparatus 110a may store the user's foot information data data from the foot information input unit 121 . The foot information storage unit 122 may be implemented as storage or a cloud server capable of storing foot information or a storage space on a network.

7 is a flowchart illustrating a method for classifying a foot according to an embodiment of the present invention.

In step S131 , the length and width of the sole may be measured from the sole boundary line image-processed by the sole image recognition unit 112 (see FIG. 2 ). The length of the sole means the vertical distance between the uppermost point and the lowermost point of the sole boundary line. In addition, the width of the sole means the horizontal distance between the points on the outermost side of the sole boundary line.

In step S132 , the user's foot may be classified into an elongated, normal, or broad-legged type through a ratio of the measured length of the user's sole to the width of the sole. The criterion for classifying the user's foot through the foot length-foot width ratio is the same as described above with reference to FIG. 3A.

In step S133 , the length of the big toe and the length of the index toe may be compared from the sole boundary line imaged by the sole image recognition unit 112 . The difference in length between the big toe and the index toe means the vertical distance between the uppermost point of the big toe and the uppermost point of the index toe.

In step S134 , the user's foot type may be classified as an Egyptian type, a Roman type, or a Greek type by comparing the measured length of the big toe and the length of the index toe. The criteria for classifying the user's foot by comparing the lengths of the big toe and the index toe are as described above with reference to FIG. 3B .

8 is a flowchart illustrating a method for classifying a foot according to another embodiment of the present invention.

In step S110 , the sole photo input unit 111 (refer to FIG. 2 ) included in the foot type classification apparatus 100b (refer to FIG. 5 ) according to an embodiment of the present invention may receive the user's sole photo. The user's sole photo may be input in the form of an image file. Alternatively, when the present invention is driven by software, the image may be directly captured and inputted from a camera included in a terminal equipped with the software. The format and type of the input sole photo is not limited.

In step S120 , the sole image recognition unit 112 (refer to FIG. 2 ) included in the foot type classification device 110b may convert the input user's sole photo. The sole image recognition unit 112 may model the input sole photo to extract the sole boundary line and process the image. The sole image recognition unit 112 may measure the length of the foot, the width of the foot, the length of the big toe, the length of the index toe, and the like through the image-processed sole boundary line.

In step S130, the foot classification unit 113 (refer to FIG. 2) included in the foot classification device 110b may classify the user's foot into nine types through the user's sole information measured by the sole image recognition unit 112. have. The foot classification unit 113 may classify the user's foot into an elongate type, a normal type, or a broad type based on a foot length-toe width ratio of the user's sole image. Also, the foot type classification unit 113 may classify the user's foot into an Egyptian, Roman, or Greek type based on a difference in length between the user's big toe and index toe. That is, in the foot classification unit 113, the user's foot may be classified into a total of nine types through a two-step classification process.

In step S140 , the foot information input unit 121 (refer to FIG. 4 ) included in the foot classification apparatus 100b may receive the user's foot information output from the foot analysis unit 110 . The foot information input unit 121 includes the user's foot type classified by the foot classification unit 113 of the foot analysis unit 110 and the foot length, foot width, and big toe length of the sole image measured by the sole image recognition unit 112 . and information such as the length of the index toe may be input.

In step S150 , the foot information storage unit 122 (refer to FIG. 4 ) included in the foot classification apparatus 110b may store the user's foot information data data from the foot information input unit 121 . The foot information storage unit 122 may be implemented as storage or a cloud server capable of storing foot information or a storage space on a network.

In step S160 , the foot information application unit 130 (refer to FIG. 5 ) included in the foot type classification apparatus 110b may apply the user's foot information that has been converted and stored in the foot information processing unit 120 . For example, the foot information application unit 130 may be commercially used by collecting the stored user's foot data to form collective data and building a database. The user of the software to which the foot classification apparatus and the foot classification method according to the present invention are applied is granted access to the foot information application unit 130, and the user is a buyer in custom shoe production, shoe information confirmation and used transaction from foot data. and the seller's foot match can be determined.

The above are specific embodiments for carrying out the present invention. The present invention will include not only the above-described embodiments, but also simple design changes or easily changeable embodiments. In addition, the present invention will include techniques that can be easily modified and implemented using the embodiments. Accordingly, the scope of the present invention should not be limited to the above-described embodiments and should be defined by the claims and equivalents of the claims as well as the claims to be described later.

100a, 100b: foot sorting device
110: foot analysis unit
111: sole photo input unit
112: sole image recognition unit
113: foot type classification unit
120: foot information processing unit
121: foot type information input unit
122: foot information storage unit
130: foot type information application unit

Claims (16)

a foot analysis unit for classifying the user's foot into a plurality of types based on a photograph of the user's foot, and analyzing the user's foot information; and
Including a foot information processing unit for processing the foot information,
The foot type analyzing unit classifies the user's foot based on a foot length-toe width ratio and a difference in length between the big toe and the index toe based on the photograph of the sole of the foot. The method of claim 1,
The foot analysis unit:
a sole photo input unit capable of inputting a photo of the user's sole;
a sole image recognition unit for image processing the image of the sole of the foot and extracting information on the sole of the user's foot; and
and a foot classification unit configured to classify the user's foot based on the sole information. 3. The method of claim 2,
The sole information includes at least one of a length of a foot, a width of a foot, a length of a big toe, and a length of an index toe. 3. The method of claim 2,
The foot information processing unit:
a foot information input unit for receiving the user's foot information output from the foot foot analysis unit; and
and a foot type information storage unit for storing the foot type information. The method of claim 1,
The foot classification apparatus further comprising a foot information application unit for collectively providing the foot information stored in the foot information processing unit as data. 6. The method of claim 5,
The foot information application unit is a cloud server foot classification device. The method of claim 1,
The foot type analysis unit classifies the user's foot into type 1, type 2, or type 3 based on the average value of the foot length-toe width ratio and the standard deviation of the foot length-toe width ratio. 8. The method of claim 7,
The foot analysis unit classifies the user's foot into a fourth type when the length of the big toe is longer than the length of the index toe, and generates the user's foot when the length of the big toe is the same as the length of the index toe A foot classification device for classifying the user's foot into type 5, and classifying the user's foot into type 6 when the length of the big toe is shorter than the length of the index toe. 9. The method of claim 8,
The foot type analysis unit classifies the first to third types according to the average value of the foot length-foot width and the standard deviation of the foot length-foot width, and the second according to the length of the big toe and the length of the index toe A foot classification device for classifying the user's foot by combining the classification into types 4 to 6. In the foot classification method of a foot classification apparatus using a photograph of a user's sole:
receiving a picture of the user's foot;
converting the picture of the sole into an image;
classifying the user's foot based on the image;
receiving the user's foot information; and
Including the step of storing the foot information,
The step of classifying the foot is a method of classifying the user's foot based on a foot length-toe width ratio and a difference in length between the big toe and the index toe based on the photo of the sole. 11. The method of claim 10,
The step of converting the picture of the sole into an image includes the step of extracting information on the sole of the foot of the user. 12. The method of claim 11,
The sole information includes at least one of the length of the foot, the width of the foot, the length of the big toe, and the length of the index toe. 11. The method of claim 10,
Foot type classification method further comprising a foot information application step of providing the stored foot information as a collective data. 11. The method of claim 10,
A method of classifying the foot of the user into type 1, type 2, or type 3 based on an average value of the foot length-toe width ratio and a standard deviation of the foot length-toe width ratio. 15. The method of claim 14,
When the length of the big toe is longer than the length of the index toe, the user's foot is classified as type 4, and when the length of the big toe is the same as the length of the index toe, the foot of the user is classified as type 5 and, when the length of the big toe is shorter than the length of the index toe, classifying the user's foot as a sixth type. 16. The method of claim 15,
Classification of the first type to the third type according to the average value of the foot length-foot width and the standard deviation of the foot length-foot width, and the fourth type to the above type according to the length of the big toe and the length of the index toe A method of classifying the foot of the user by combining the classification into the sixth type.

Images