A method for constructing a custom garment body model

Abstract

The present application belongs to the technical field of clothing customization, and particularly relates to a method for constructing a customized clothing body model, which designs a sorting method for a customized clothing human body shape and a method for constructing a body shape required by individual customization. The method designs a body shape recombination relationship based on clothing sizes and national standards for each clothing size, generates a standard body shape data group, a batched body shape data group, and a body model corresponding to the data groups; on the basis, the customized human body data is sorted, a height proportion corresponding to a body girth is set, and a body model that can be combined according to a customized individual is generated.

Description

Technical Field

[0001] This invention belongs to the field of clothing customization technology, and in particular relates to a method for constructing a body shape model for customized clothing. Background Technology

[0002] With the improvement of people's living standards and aesthetic appreciation, more and more people are choosing customized clothing, and personalized customization is gradually becoming the norm. Clothing production is divided into ready-to-wear production, mass customization, and individual customization. In the process of individual customization, it is necessary to collect body data and produce suitable clothing based on each individual's data. However, currently, customized clothing still cannot be effectively industrialized and relies heavily on manual labor, especially in processes such as pattern making and body model construction. The main reasons are: I. Existing national standards for human body data cannot fully meet the needs of mass customization and personalized customization. my country's national standard series for garment manufacturing anthropometric data—GB / T 1335 "Clothing Size"—specifies clothing sizes: "Size" refers to height, and "type" refers to the upper body chest circumference or lower body waist circumference. In this standard, body type is categorized by the difference between chest and waist circumference, classified into four types according to the codes Y, A, B, and C. Type Y indicates a difference between chest and waist circumference between 17cm and 22cm; Type A indicates a difference between 12cm and 16cm; Type B indicates a difference between 7cm and 11cm; and Type C indicates a difference between 2cm and 6cm.

[0003] It can be seen that although clothing sizes categorize human body types, they only cover three dimensions: height, chest circumference, and waist circumference. Other dimensions related to clothing fit, such as neck circumference, total shoulder width, and hip circumference, are not included. For custom-made clothing, especially personalized customization, this standard cannot cover all possible body types.

[0004] Second, existing national standard sizes for ready-made garments are difficult to fully cover personalized customization sizes. my country's garment specifications are closely related to the GB / T 1335 "Clothing Size" series. National standards for garment size specifications include GB / T2667 "Shirt Specifications," GB / T2668 "Single Garment / Suit Specifications," and GB / T 14304 "Wool Suit Specifications." These national standards specify the finished product specifications for various garments made primarily of woven textiles, and their specifications are based on the Y, A, B, and C body type classifications of GB / T 1335 "Clothing Size." Like most clothing size standards, these garment size standards were first published in the 1980s and 1990s and have undergone multiple revisions. These standards have had a profound impact on garment size specifications in the clothing industry, and many garment manufacturers refer to these standards for setting garment sizes. However, like the GB / T 1335 "Clothing Size" series, they are not entirely suitable for personalized customization.

[0005] For custom-made clothing, designing garments based on individual body measurements is time-consuming, labor-intensive, and has a long delivery time. Therefore, it is necessary to develop a body type classification method suitable for custom-made clothing. Body type serves as the internal model for clothing. Unlike ready-made garments, the model for personalized customization is more complex. Currently, there is no suitable body type description for customization. Completely overturning national standard classifications and establishing a new classification system requires extensive data and experimental support, and may encounter problems in its widespread application. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a method for constructing a body shape model for customized clothing, which can automatically construct a body shape model based on the body shape data input from the customized clothing.

[0007] To achieve the above objectives, the present invention adopts the following technical solution.

[0008] A method for constructing a body shape model for customized clothing is provided, including the following steps: Body size sorting: Obtain the body shape data of the person being customized. The parameters of the body shape data include height, chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference. Among them, height, chest circumference, and waist circumference are the baseline parameters, while neck circumference, shoulder width, and hip circumference are the non-baseline parameters. Determine whether the user's body shape data conforms to the range of the standard body shape data set. If so, output the corresponding standard body shape model. If not, continue to determine whether it conforms to the range of the approved body shape data set. If so, output the corresponding approved body shape model. If not, generate the customized body shape model. Custom body model generation: Based on the height data in the body shape data of the custom user, the corresponding baseline feature height data is obtained from the baseline feature height database. The baseline feature height includes cervical spine height, waist circumference height and sitting cervical spine height. Calculate the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data in the custom body data; Based on the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference data in the custom body shape data, the corresponding cross-sectional shapes are selected from the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference libraries, respectively. A customized body model is generated based on height data, corresponding feature point height data, and cross-sectional shape.

[0009] Preferably, the process includes building a body shape model database before body shape sorting, and the method for building the body shape model database includes: Obtain standard body shape data set: Obtain standard body shape data, and reconstruct the non-benchmark parameter items of the standard body shape data to obtain the reconstructed data of the corresponding parameter items; wherein, the standard body shape data is national standard data, the standard body shape data is divided into 5cm increments according to height, and the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters are all in the form of a combination of group midpoint and value range; The corresponding data in the standard body shape data is replaced with reconstructed data to obtain the standard body shape data set; Obtain the approved body shape data set: Based on the standard body shape data set, the intervals between the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters are reduced, new group midpoint values ​​are set, and the corresponding value range is narrowed to obtain the approved body shape data set. Generate body model: For each data record in the standard body shape data group, the corresponding baseline feature height data is obtained from the baseline feature height database based on its height data. The corresponding hip height, shoulder height and chest height are calculated based on the obtained baseline feature height data and the chest circumference data in each data record, and feature height data corresponding to each data record is generated. For each data record in the standard body shape data set, the midpoint of its chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters, along with the corresponding feature point height data, are used to generate a corresponding standard body shape model, which is then stored in the standard body shape model database. For each data record in the approved body shape data set, the corresponding baseline feature height data is obtained from the baseline feature height database based on its height data. The corresponding hip height, shoulder height, and chest height are calculated based on the obtained baseline feature point height data and the chest circumference data in each data record, and feature height data corresponding to each data record is generated. Each data record in the approved body shape data group uses the midpoint of its chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters, along with the corresponding feature point height data, to generate a corresponding approved body shape model, which is then stored in the approved body shape model database.

[0010] As a preferred method, calculating the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data from the custom body shape data specifically includes the following steps: Using the national standard classification rules for clothing sizes, the cervical spine height, waist circumference, and sitting cervical spine height corresponding to each height grade are obtained from the national standard for clothing sizes. The hip circumference is calculated based on the cervical vertebra height and the cervical vertebra height in a sitting position. The formula for calculating the hip circumference is expressed by equation (1): In the formula: H hip Hip circumference; H bn The cervical vertebrae are at a higher level; The cervical spine is high when sitting; Shoulder height is calculated based on the cervical vertebra height and chest circumference. The formula for calculating shoulder height is expressed by equation (2): In the formula: Shoulder height; The cervical vertebrae are at a higher level; B x Bust measurement; A x Shoulder height coefficient; C x This is a supplementary factor for shoulder height. x represents gender, which can be either m or f, where m is male and f is female; The chest circumference is calculated based on the cervical vertebra height and chest circumference. The formula for calculating the chest circumference is expressed by equation (3): In the formula: For high bust circumference; The cervical vertebrae are at a higher level; B x Bust measurement; D x The coefficient for bust circumference; E x Supplementary coefficient for bust circumference; x represents gender, which can be either m or f, where m is male and f is female.

[0011] As a preferred embodiment, the non-benchmark parameter term reconstruction method includes the following steps: Obtain the minimum neckline garment size, minimum total shoulder width garment size, and minimum hip circumference garment size; where the minimum neckline garment size is obtained from the national standard for garment specifications, which specifies the garment type with the smallest neckline. The minimum total shoulder width garment size and minimum hip circumference garment size are obtained in the same way. The neck circumference, total shoulder width, and hip circumference parameters in the garment dimensions are reconstructed into the neck circumference, shoulder width, and hip circumference parameters of the body shape data, respectively. The reconstructed calculation formula is expressed by equation (4): P mni =F mni -C mn —Equation (4) In the formula: P mni To reconstruct the values ​​in the data set; F mni For clothing size specifications; C mn The slack measure is taken from the preset slack measure table; m represents body type, with values ​​Y, A, B, and C; n represents the body part, with values ​​of 1, 2, and 3, where 1 represents neck circumference, 2 represents shoulder width, and 3 represents hip circumference. i represents the quantity, and its value is a natural number; Set the corresponding value range for the values ​​in the reconstructed data group calculated from the neck circumference, shoulder width, and hip circumference parameters to obtain the corresponding reconstructed data.

[0012] Beneficial Effects: This invention presents a method for sorting human body shapes for customized clothing and constructing body shapes required for individual customization. Based on national standards for clothing sizes and various garment specifications, this method designs body shape recombination relationships, generates standard body shape data sets and approved body shape data sets, and generates corresponding body shape models. On this basis, customized human body data is screened, and after setting the height ratio corresponding to the body circumference, body shape models that can be combined according to customized individuals are generated. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a computer device according to Embodiment 1 of the present invention; Figure 2 This is the median table of the Y-type standard body group in Embodiment 2 of the present invention; Figure 3 This is the median table of the male Y-shaped body type group in Embodiment 2 of the present invention; Figure 4 This is a summary table of Y-type standard body shape data group No. 155 in Embodiment 2 of the present invention; Figure 5This is a summary table of Y-type body shape data group No. 155 in Embodiment 2 of the present invention; Figure 6 This is a reference to the standard basic paper pattern for men's clothing body in Embodiment 2 of the present invention; Figure 7 This is a flowchart illustrating the process of generating a customized body model according to Embodiment 2 of the present invention; Figure 8 This is a schematic diagram comparing the customized body shape model with the standard body shape model in Embodiment 2 of the present invention. Detailed Implementation

[0014] The present invention will be further described clearly and in detail below with reference to specific embodiments and the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only some, not all, of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Unless otherwise specified, the methods briefly described in the embodiments of the present invention are methods mastered by those skilled in the art.

[0015] Example 1 As one aspect of this embodiment, a method for constructing a body shape model for customized clothing is provided, including the following steps: Body size sorting: Obtain the body shape data of the person being customized. The parameters of the body shape data include height, chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference. Among them, height, chest circumference, and waist circumference are the baseline parameters, while neck circumference, shoulder width, and hip circumference are the non-baseline parameters. Determine whether the user's body shape data conforms to the range of the standard body shape data set. If so, output the corresponding standard body shape model. If not, continue to determine whether it conforms to the range of the approved body shape data set. If so, output the corresponding approved body shape model. If not, generate the customized body shape model. Custom body model generation: Based on the height data in the body shape data of the custom user, the corresponding baseline feature height data is obtained from the baseline feature height database. The baseline feature height includes cervical spine height, waist circumference height and sitting cervical spine height. Calculate the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data in the custom body data; select the corresponding cross-sectional shape from the chest circumference library, waist circumference library, neck circumference library, shoulder width library, and hip circumference library respectively based on the chest circumference data, waist circumference data, neck circumference data, shoulder width library, and hip circumference data in the circumference cross-sectional shape library. A customized body model is generated based on height data, corresponding feature point height data, and cross-sectional shape.

[0016] Preferably, the process includes building a body shape model database before body shape sorting, and the method for building the body shape model database includes: Obtain standard body shape data set: Obtain standard body shape data, and reconstruct the non-benchmark parameter items of the standard body shape data to obtain the reconstructed data of the corresponding parameter items; wherein, the standard body shape data is national standard data, the standard body shape data is divided into 5cm increments according to height, and the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters are all in the form of a combination of group midpoint and value range; The corresponding data in the standard body shape data is replaced with reconstructed data to obtain the standard body shape data set; Obtain the approved body shape data set: Based on the standard body shape data set, the intervals between the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters are reduced, new group midpoint values ​​are set, and the corresponding value range is narrowed to obtain the approved body shape data set. Generate body model: For each data record in the standard body shape data group, the corresponding baseline feature height data is obtained from the baseline feature height database based on its height data. The corresponding hip height, shoulder height and chest height are calculated based on the obtained baseline feature height data and the chest circumference data in each data record, and feature height data corresponding to each data record is generated. For each data record in the standard body shape data set, the midpoint of its chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters, along with the corresponding feature point height data, are used to generate a corresponding standard body shape model, which is then stored in the standard body shape model database. For each data record in the approved body shape data set, the corresponding baseline feature height data is obtained from the baseline feature height database based on its height data. The corresponding hip height, shoulder height, and chest height are calculated based on the obtained baseline feature point height data and the chest circumference data in each data record, and feature height data corresponding to each data record is generated. Each data record in the approved body shape data group uses the midpoint of its chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters, along with the corresponding feature point height data, to generate a corresponding approved body shape model, which is then stored in the approved body shape model database.

[0017] Furthermore, the calculation of the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data from the custom-made body shape data specifically includes the following steps: Using the national standard for clothing size classification rules, with each size in 5cm increments, the corresponding cervical spine height, waist circumference, and cervical spine height in a sitting position are obtained from the national standard for clothing size. The hip circumference is calculated based on the cervical vertebra height and the cervical vertebra height in a sitting position. The formula for calculating the hip circumference is expressed by equation (5): In the formula: H hip Hip circumference; H bn The cervical vertebrae are at a higher level; The cervical spine is high when sitting; Shoulder height is calculated based on the cervical vertebra height and chest circumference. The formula for calculating shoulder height is expressed by equation (6): In the formula: Shoulder height; The cervical vertebrae are at a higher level; B x Bust measurement; A x Shoulder height coefficient; C x This is a supplementary factor for shoulder height. x represents gender, which can be either m or f, where m is male and f is female; The chest circumference is calculated based on the cervical vertebrae height and chest circumference. The formula for calculating the chest circumference is expressed by equation (7): In the formula: For high bust circumference; The cervical vertebrae are at a higher level; B x Bust measurement; D x The coefficient for bust circumference; E x Supplementary coefficient for bust circumference; x represents gender, which can be either m or f, where m is male and f is female.

[0018] Furthermore, the non-benchmark parameter reconstruction method includes the following steps: Obtain the minimum neckline garment size, minimum total shoulder width garment size, and minimum hip circumference garment size; where the minimum neckline garment size is obtained from the national standard for garment specifications, which specifies the garment type with the smallest neckline. The minimum total shoulder width garment size and minimum hip circumference garment size are obtained in the same way. The neck circumference, total shoulder width, and hip circumference parameters in the garment dimensions are reconstructed into the neck circumference, shoulder width, and hip circumference parameters of the body shape data, respectively. The reconstructed calculation formula is expressed by equation (8): Pmni＝ F mni -C mn Equation (8) In the formula: P mni To reconstruct the values ​​in the data set; F mni For clothing size specifications; C mn The slack measure is taken from the preset slack measure table; m represents body type, with values ​​Y, A, B, and C; n represents the body part, with values ​​of 1, 2, and 3, where 1 represents neck circumference, 2 represents shoulder width, and 3 represents hip circumference. i represents the quantity, and its value is a natural number; Finally, set the corresponding value range for the values ​​in the reconstructed data set calculated for the neck circumference, shoulder width, and hip circumference parameters to obtain the corresponding reconstructed data and complete the reconstruction.

[0019] The advantage of this embodiment lies in its design of a method for sorting human body shapes for customized clothing and constructing body shapes required for individual customization. Based on clothing sizes and national standards for various garment specifications, this method designs body shape recombination relationships, generates standard body shape data sets and approved body shape data sets, and generates body shape models for the corresponding data sets. On this basis, customized human body data is screened, and after setting the height ratio corresponding to the human body circumference, a body shape model that can be combined according to customized individuals is generated.

[0020] like Figure 1 As shown, as another aspect of this embodiment, a computer device 100 is also provided, including one or more central processing units (CPUs) 101, which can perform various appropriate actions and processes according to programs stored in read-only memory (ROM) 102 or programs loaded from storage portion 108 into random access memory (RAM) 103. The RAM 103 also stores various programs and data required for the operation of the device 100. The CPU 101, ROM 102, and RAM 103 are interconnected via bus 104. Input / output (I / O) interface 105 is also connected to bus 104.

[0021] The following components are connected to I / O interface 105: an input section 506 including a keyboard, mouse, etc.; an output section 107 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 108 including a hard disk, etc.; and a communication section 109 including a network interface card such as a LAN card, modem, etc. The communication section 109 performs communication processing via a network such as the Internet. Driver 110 is also connected to I / O interface 105 as needed. Removable media 111, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on driver 110 as needed so that computer programs read from them can be installed into storage section 108 as needed.

[0022] Specifically, the methods described above according to this embodiment can be implemented as computer software programs. For example, this embodiment includes a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing the methods described in any of the above embodiments. In such a case, the computer program can be downloaded and installed from a network via communication section 109, and / or installed from removable medium 111.

[0023] In another aspect, this embodiment also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the apparatus of the above embodiments; or it may be a standalone computer-readable storage medium not assembled into the device. The computer-readable storage medium stores one or more programs that are used by one or more processors to perform the methods described in this embodiment.

[0024] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or operation, or by a combination of dedicated hardware and computer instructions.

[0025] The units or modules described in the embodiments of this application can be implemented in software or hardware. The described units or modules can also be located in a processor; for example, each unit can be a software program located in a computer or mobile smart device, or a separately configured hardware device. The names of these units or modules do not, in some cases, constitute a limitation on the unit or module itself.

[0026] Example 2 As one embodiment of the present invention, a method for constructing a body shape model for customized clothing is provided, comprising the following steps: Preprocessing stage: Before constructing a body shape model for custom clothing, pre-configure the required standard body shape data set, approved body shape data set, baseline feature height database generation and feature height calculation, standard body shape model database, and approved body shape model database.

[0027] I. Standard Body Type Data Set The standard body size data set is designed to use the most representative human body dimensions to reflect the differences in human body size. It includes six dimensions: height, neck circumference, shoulder width, chest circumference, waist circumference, and hip circumference. Among them, height data expresses the overall differences in height within the human body range; neck circumference, shoulder width, chest circumference, waist circumference, and hip circumference represent the differences in body circumference within the human body range.

[0028] The acquisition of the aforementioned size data and rules comprises two parts. Height, chest circumference, and waist circumference are the main data in GB / T 1335.1-2008 and GB / T 1335.2-2008 (hereinafter referred to as the national standard for clothing sizes), from which the matching dimensions and their matching rules can be directly obtained. According to the rules of the national standard for clothing sizes, height is referred to as "size," chest circumference as "upper body type," and waist circumference as "lower body type." Using the dimensions and rules in the national standard for clothing sizes as the middle group values, data for Y, A, B, and C body types are extracted.

[0029] Neck circumference, shoulder width, and hip circumference do not have corresponding values ​​or matching rules in the national standards for clothing sizes. However, corresponding garment sizes are provided in national standards for ready-to-wear garments such as GB / T 2667 "Shirt Specifications", GB / T 2668 "Single Garment and Suit Specifications", and GB / T 14304 "Wool Suit Specifications" (hereinafter referred to as ready-to-wear size standards). The correspondence between human body dimensions and garment sizes is shown in the table. The human body dimension is obtained by subtracting ease allowance from the garment size.

[0030] Table 1. Correspondence between Human Body Dimensions and Clothing Sizes The standard body shape data set acquisition is completed in three steps: neck circumference, shoulder width and hip circumference reconstruction, setting the upper and lower limits of standard human body values, and setting the standard body shape data set.

[0031] 1. Reconstruction of neck circumference, shoulder width, and hip circumference 1.1 Extract the smallest garment size Garment dimensions are composed of body measurements plus ease allowance. Therefore, when calculating body measurements, the smallest garment size is extracted first. Consulting national standards for garment specifications reveals that for men's clothing, the garment type with the smallest collar circumference (collar size) is the shirt, the garment type with the smallest total shoulder width is the suit, and the garment type with the smallest hip circumference is the trousers. Therefore, categorized by body types Y, A, B, and C, the collar circumference, total shoulder width, and hip circumference are extracted first for each garment type.

[0032] 1.2 Reconstruction Dimension Calculation The reconstructed dimensions of each body shape are calculated according to formula (9).

[0033] P mni =F mni -C mn Equation (9) In the formula: P mni To reconstruct the values ​​in the data set; F mni For clothing size specifications; C mn For loosening; m represents body type, with values ​​Y, A, B, and C; n represents the body part, with values ​​of 1, 2, and 3, where 1 represents neck circumference, 2 represents shoulder width, and 3 represents hip circumference. i represents the quantity, and its value is a natural number.

[0034] Based on the ease allowance commonly used in garment production and the data analysis results from the human body size database, we can derive the C category from the Y, A, B, and C body type classifications. mn Values, taking males as an example, are shown in Table 2. The body's neck circumference, shoulder width, and hip circumference are based on extracted clothing size data and C... mn The value is designed in the table, and the calculation is performed using equation (9).

[0035] Table 2 C mn Value design table (male) unit is centimeters 2. Standard body shape data set setting In the national standard for clothing sizes, a matching rule is established based on height in 5cm increments, chest circumference in 4cm increments, and waist circumference in 2cm increments. Following the principle of "same size" (i.e., same height, same chest / waist circumference), six values—height, neck circumference, shoulder width, chest circumference, waist circumference, and hip circumference—are combined. Chest circumference corresponds to neck circumference and shoulder width, and hip circumference corresponds to waist circumference, resulting in the median value for the standard body group. Based on the median value of the standard body group, upper and lower limits are set according to different Y, A, B, and C body types and the coefficients given in Appendix A of the national standard for clothing sizes, forming the standard body value range. Taking men as an example, the standard value range for men is shown in Table 3. Combining the group median value with the corresponding value range yields the corresponding standard body type data group. Figure 2 As shown, taking the male Y-shape as an example, after obtaining the national standard data, the corresponding male Y-shape standard body shape data group midpoint table is obtained by combining the reconstructed data.

[0036] Table 4 shows the value ranges for different circumference parts of the standard male human body, in centimeters. II. Approval of Body Type Data Set Customized clothing can be categorized into batch customization and personalized customization. Batch customization mostly occurs in group order production, often referred to as group orders. Because the order quantity is larger than that of individual consumer orders, the requirements for delivery speed are higher. Group orders have requirements for both delivery speed and garment fit, thus necessitating the establishment of suitable data sets. The classification of standard body shape data sets based on national clothing size standards is too broad, making it difficult to use for customized clothing. The batch normal body data set is a subdivision of the standard body shape group. For example, in the standard body shape data set, upper body shape (chest circumference) is divided into 4cm increments. In the batch body shape data set, upper body shape (chest circumference) is set into 2cm increments. The newly added value of the batch normal body group is the average of the midpoints of the left and right groups, with the value range narrowed proportionally. Value ranges for chest circumference, neck circumference, and shoulder width are set, as shown in Table 5.

[0037] Continuing the principle of "same size" (i.e., same height, same chest / waist circumference), the six values ​​of height, neck circumference, shoulder width, chest circumference, waist circumference, and hip circumference are combined to form the range of batch constant body data values, and thus form batch constant body data groups. For example... Figure 3 As shown, taking the male Y-type as an example, the midpoint of the approved body shape data group is determined. After obtaining the national standard data, the corresponding midpoint table of the approved male Y-type body shape data group is obtained by combining the reconstructed data.

[0038] Table 5 specifies the value ranges for different body circumferences in males, in centimeters. To better illustrate the differences between the approved body shape data group and the standard body shape data group Figure 4 and Figure 5The two tables are a standard body type data set and an approved body type data set, respectively, for a Y-shaped male with a height of 155cm.

[0039] III. Generation of the Baseline Feature Height Database and Calculation of Feature Height The data parameters used to establish standard and approved body shape data sets include height, neck circumference, shoulder width, chest circumference, waist circumference, and hip circumference. It can be seen that only the height data is related to height; the other data are independent of height. Without setting a height ratio, it is easy to confuse basic body shapes with the same circumference dimensions with different height dimensions. Therefore, the following section explains how to establish standard and customized human height ratios.

[0040] In the standard body shape data set, the values ​​for neck circumference, shoulder width, chest circumference, waist circumference, and hip circumference have been confirmed. The height of the human body corresponding to the plane of neck circumference is the height of the cervical spine; the height of the human body corresponding to the plane of shoulder width is the shoulder height; the height of the human body corresponding to the plane of chest circumference is the chest height; the height of the human body corresponding to the plane of waist circumference is the waist height; and the height of the human body corresponding to the plane of hip circumference is the hip height.

[0041] Each height value corresponds one-to-one with a set of girth sections, and by combining them, a corresponding body shape model can be generated. There are some differences in the calculation parameters for shoulder height and chest circumference between men and women; the following description uses men as an example: 1. Cervical spine point and waist height settings According to Appendix A of the national standard for clothing sizes, the four values—height, cervical spine height, seated cervical spine height, and waist circumference—are related to height. Using the grading rules of the national standard for clothing sizes, height is divided into 5cm increments, and height, cervical spine height, and waist circumference, along with their variation coefficients, are set according to Appendix A.

[0042] 2. Hip height setting The cervical spine height refers to the vertical distance from the seventh cervical vertebra to the ground when the subject is standing upright, measured using a human height measuring instrument. The seated cervical spine height refers to the vertical distance from the seventh cervical vertebra to the seat surface when the subject is sitting upright on a stool with their torso straight, thighs fully supported by the seat surface, lower legs hanging naturally, and head facing forward, measured using a human height measuring instrument. Therefore, the formula for calculating hip circumference can be expressed by equation (10).

[0043] In the formula: H hip Hip circumference; Hbn is the cervical vertebral elevation; The cervical spine is high when sitting.

[0044] 3. Shoulder height setting Shoulder height cannot be directly set or calculated using the national standard for clothing sizes. Therefore, it is set by combining the national standard for clothing sizes and using commonly used measurements in clothing prototype design. Figure 6 This is the basic paper pattern for men's clothing. The line connecting the side neck point to the shoulder point is the shoulder slope line. When the clothing is worn on the human body, the arc formed by the side neck point and the seventh cervical vertebra is the neck circumference line. Therefore, the male shoulder height can be calculated by the vertical distance between the side neck point and the shoulder point. The shoulder height is shown in formula (11): In the formula: Shoulder height for males; For men, the cervical spine point is higher; B m For male chest circumference.

[0045] 4. The bust height is set in the same way as the shoulder height, and it also needs to be calculated from the standard basic pattern. Bust height is the horizontal distance on the plane containing the bust measurement. Figure 6 In this paper, the armhole depth line is used instead of the chest line, and the chest line is taken 1cm below it. The formula for calculating the chest height of men is given by equation (12).

[0046] In the formula: For men, a higher chest circumference is desirable. For men, the cervical spine point is higher; B m For male chest circumference.

[0047] Based on the data in the preset database of cervical spine height, sitting cervical spine height, and waist circumference, the corresponding intermediate shoulder height and chest circumference height are calculated according to the above-mentioned formula. For example, if the height of men is set in 5cm increments, the characteristic height data group of the standard male body type data group can be calculated, as shown in Table 6 below.

[0048] Table 6 shows the characteristic height data of male standard body type (unit: centimeters). 155 133 127.5 108.7 93.5 72.50 160 137 131.3 112.1 96.5 74.50 165 141 135.1 115.4 99.5 76.50 170 145 139.0 118.8 102.5 78.50 175 149 142.8 122.2 105.5 80.5 180 153 146.6 125.6 108.5 82.5 185 157 150.5 129.0 111.5 84.5 190 161 154.3 132.4 114.5 86.5 IV. Standard Body Shape Model Database Based on the standard body shape data set and feature height calculation, the circumference data and feature height data of the standard body shape are obtained to generate the corresponding standard body shape model and store it in the standard body shape model database.

[0049] V. Approval of Body Shape Model Database Based on the approved body shape data set and feature height calculation, the circumference data and feature height data of the approved body shape are obtained to generate the corresponding approved body shape model and store it in the approved body shape model database.

[0050] Body size sorting stage: Obtain the body shape data of the person being customized. The parameters of the body shape data include height, chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference. Among them, height, chest circumference, and waist circumference are the baseline parameters, while neck circumference, shoulder width, and hip circumference are the non-baseline parameters. Determine whether the user's body shape data conforms to the range of the standard body shape data set. If so, output the corresponding standard body shape model. If not, continue to determine whether it conforms to the range of the approved body shape data set. If so, output the corresponding approved body shape model. If not, generate the customized body shape model. Custom body model generation stage: Based on the height data in the body shape data of the custom user, the corresponding baseline feature height data is obtained from the baseline feature height database. The baseline feature height includes cervical spine height, waist circumference height and sitting cervical spine height. Calculate the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data from the custom-made body shape data; for example... Figure 7 As shown, based on the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference data in the custom body shape data, the corresponding cross-sectional shapes are selected from the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference libraries, respectively; and a custom body shape model is generated based on the height data, the corresponding feature point height data, and the cross-sectional shape.

[0051] For human body data consisting of height and circumference, the height is matched with a human height database to obtain the height ratio. Each circumference is matched with different circumference databases to obtain circumference cross-sections, forming circumference cross-section groups. The human height ratio and circumference cross-section groups work together to generate a customized basic human body shape. For example, a male who is 175cm tall has a chest circumference of 100cm, a neck circumference of 36cm, a shoulder width of 44cm, a waist circumference of 102cm, and a hip circumference of 111cm. It can be seen that this male does not meet the dimensional data of the standard human body data group and the approved human body data group. Therefore, the height value of 175cm is retrieved and combined with the circumference values ​​from the respective circumference databases to generate a customized basic human body shape. Figure 8 As shown in the figure, the customized body model of the male body type mentioned above is compared with the standard body model to which it belongs. It can be seen that there are significant differences between the two, and the customized body model is obviously more user-friendly.

[0052] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the concept of this application. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for constructing a body shape model for customized clothing, characterized in that, Includes the following steps: Body shape model database construction: Obtain standard body shape data, and reconstruct the non-benchmark parameter items of the standard body shape data to obtain the reconstructed data of the corresponding parameter items; wherein, the standard body shape data is national standard data, the standard body shape data is divided into 5cm increments according to height, and the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters are all in the form of a combination of group midpoint and value range; The corresponding data in the standard body shape data is replaced with reconstructed data to obtain the standard body shape data set; Based on the standard body shape data set, the intervals between the chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters are reduced, new group midpoint values ​​are set, and the corresponding value range is narrowed to obtain the approved body shape data set. For each data record in the standard body shape data group, the corresponding baseline feature height data is obtained from the baseline feature height database based on its height data. The corresponding hip height, shoulder height and chest height are calculated based on the obtained baseline feature height data and the chest circumference data in each data record, and feature height data corresponding to each data record is generated. Each data record in the standard body shape data set uses the midpoint of its chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters, along with the corresponding feature point height data, to generate a corresponding standard body shape model, which is then stored in the standard body shape model database. For each data record in the body shape data group, the corresponding baseline feature height data is obtained from the baseline feature height database based on its height data. The corresponding hip height, shoulder height and chest height are calculated based on the obtained baseline feature height data and the chest circumference data in each data record, and feature height data corresponding to each data record is generated. Each data record in the approved body shape data group uses the midpoint of its chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference parameters, along with the corresponding feature point height data, to generate a corresponding approved body shape model and store it in the approved body shape model database. Body size sorting: Obtain the body shape data of the person being customized. The parameters of the body shape data include height, chest circumference, waist circumference, neck circumference, shoulder width, and hip circumference. Among them, height, chest circumference, and waist circumference are the baseline parameters, while neck circumference, shoulder width, and hip circumference are the non-baseline parameters. Determine whether the user's body shape data conforms to the range of the standard body shape data set. If so, output the corresponding standard body shape model. If not, continue to determine whether it conforms to the range of the approved body shape data set. If so, output the corresponding approved body shape model. If not, generate the customized body shape model. Custom body model generation: Based on the height data in the body shape data of the custom user, the corresponding baseline feature height data is obtained from the baseline feature height database. The baseline feature height includes cervical spine height, waist circumference height and sitting cervical spine height. Calculate the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data in the custom body data; select the corresponding cross-sectional shape from the chest circumference library, waist circumference library, neck circumference library, shoulder width library, and hip circumference library respectively based on the chest circumference data, waist circumference data, neck circumference data, shoulder width library, and hip circumference data in the circumference cross-sectional shape library. A customized body model is generated based on height data, corresponding feature point height data, and cross-sectional shape.

2. The method for constructing a body shape model for customized clothing according to claim 1, characterized in that, The calculation of the corresponding hip height, shoulder height, and chest height based on the baseline feature point height data and the chest circumference data from the custom-made body shape data includes the following steps: Using the national standard for clothing size classification rules, obtain the cervical spine height, waist circumference height, and sitting cervical spine height corresponding to each height grade from the national standard for clothing size. The hip circumference is calculated based on the cervical vertebra height and the cervical vertebra height in a sitting position. The formula for calculating the hip circumference is expressed by equation (l): ； In the formula: Hip circumference; The cervical vertebrae are at a higher level; The cervical spine is high when sitting; Shoulder height is calculated based on the cervical vertebra height and chest circumference. The formula for calculating shoulder height is expressed by equation (2): ； In the formula: Shoulder height; The cervical vertebrae are at a higher level; Bust measurement; Shoulder height coefficient; This is a supplementary factor for shoulder height. x represents gender, which can be either m or f, where m is male and f is female; The chest circumference is calculated based on the cervical vertebra height and chest circumference. The formula for calculating the chest circumference is expressed by equation (3): In the formula: For high bust circumference; The cervical vertebrae are at a higher level; Bust measurement; The coefficient for bust circumference; Supplementary coefficient for bust circumference; x represents gender, which can be either m or f, where m is male and f is female.

3. The method for constructing a body shape model for customized clothing according to claim 1, characterized in that, The non-benchmark parameter reconstruction method includes the following steps: Obtain the minimum neckline garment size, minimum total shoulder width garment size, and minimum hip circumference garment size; where the minimum neckline garment size is obtained from the national standard for garment specifications, which specifies the garment type with the smallest neckline. The minimum total shoulder width garment size and minimum hip circumference garment size are obtained in the same way. The neck circumference, total shoulder width, and hip circumference parameters in the garment dimensions are reconstructed into the neck circumference, shoulder width, and hip circumference parameters of the body shape data, respectively. The reconstructed calculation formula is expressed by equation (4): In the formula: To reconstruct the values ​​in the data set; For clothing size specifications; The slack measure is taken from the preset slack measure table; m represents body type, with values ​​Y, A, B, and C; n represents the body part, with values ​​of 1, 2, and 3, where 1 represents neck circumference, 2 represents shoulder width, and 3 represents hip circumference. i represents the quantity, and its value is a natural number; Set the corresponding value range for the values ​​in the reconstructed data group calculated from the neck circumference, shoulder width, and hip circumference parameters to obtain the corresponding reconstructed data.

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