Dress customizing analysis method and system based on scene analysis

Abstract

The application discloses a robe customization analysis method and system based on scene analysis, and belongs to the field of garment customization. The application acquires body appearance information and action sequence information of a customer, designs an initial robe three-dimensional image, constructs a robe finite element model, imports fabric parameters obtained through standardized fabric mechanical property testing into the robe finite element model, evaluates displacement and deformation characteristics of the robe under different actions, constructs a robe comfort evaluation model, imports fitting data of the robe and the human body into the robe comfort evaluation model, evaluates overall comfort of the robe, constructs a wear evaluation model, imports robe stretching data into the wear evaluation model to evaluate fabric wear and fabric wear influence, and constructs a comprehensive matching model. The overall comfort and overall wear risk are imported into the comprehensive matching model to evaluate comprehensive performance of different robe design schemes, so that the precision and comfort of robe customization are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of garment customization, and in particular to a cheongsam customization analysis method and system based on scene analysis. BACKGROUND

[0002] As an important representative of traditional Chinese costumes, cheongsam reveals the elegant temperament of Eastern women with its unique pattern design and close-fitting cutting. However, the traditional cheongsam customization process mainly relies on manual measurement and cutting experience. Traditional cheongsam customization usually uses a tape measure to measure the key parts of the human body, and draws and cuts the pattern according to experience. This method relies heavily on the experience of designers and is difficult to achieve precise and personalized customization, and it is easy to cause the clothes to not fit the body completely. Traditional customization only focuses on static size matching, but ignores the motion characteristics of the human body in daily activities (such as sitting, bending, and walking). However, the existing technology lacks a quantifiable dynamic comfort evaluation method, making it difficult to scientifically guide design improvement. Cheongsam fabrics are mostly silk, cotton, or blended fabrics, and their mechanical properties such as stretchability, shearability, and flexibility have an important influence on wearing comfort and garment durability. Traditional customization cannot accurately quantify the mechanical properties of the fabric, and there is also a lack of a prediction model for wear risk, which can easily cause cracks or damage to the fabric in high-wear areas.

[0003] The present application obtains customer physical appearance information, motion data, and fabric physical parameters, and combines three-dimensional modeling and finite element simulation to comprehensively analyze the stress, deformation, comfort, and wear risk of cheongsam in different motion scenarios, thereby improving the precision, comfort, and service life of cheongsam customization. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application proposes a cheongsam customization analysis method based on scene analysis.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The cheongsam customization analysis method based on scene analysis includes the following specific steps:

[0007] Obtain the physical appearance information and motion sequence information of the customer, and design an initial cheongsam three-dimensional image;

[0008] Construct a cheongsam finite element model, import the fabric parameters obtained through standardized fabric mechanical property testing into the cheongsam finite element model, and evaluate the displacement and deformation characteristics of the cheongsam under different motions;

[0009] Construct a cheongsam comfort evaluation model, import the fitting data of the cheongsam and the human body into the cheongsam comfort evaluation model, and evaluate the overall comfort of the cheongsam;

[0010] The wear evaluation model is constructed, and the cheongsam stretching data is introduced into the wear evaluation model to evaluate the fabric wear and the influence of fabric wear.

[0011] The comprehensive matching model is constructed, and the overall comfort and overall wear risk are introduced into the comprehensive matching model to evaluate the comprehensive performance of different cheongsam design schemes.

[0012] Preferably, the body appearance information and the action sequence information of the customer are acquired, and the initial cheongsam three-dimensional image is designed, including the following specific steps:

[0013] S11, using a 3D body scanner and traditional measuring tools, acquiring accurate body dimensions of the customer including height, bust, waist, and hip, and constructing a human three-dimensional model, dividing the human body into a triangular mesh composed of vertices and faces;

[0014] S12, acquiring the action sequence of the customer through a motion capture sensor and converting it into digital action data, wherein the action sequence includes five main actions of the human body standing still, the human body walking with the maximum stride, bending, the human body half squatting and bending, and climbing stairs, and other auxiliary actions, wherein a time sequence data, each frame records the global transformation matrix of all skeletal joints, including position and rotation;

[0015] S13, based on the human three-dimensional model, using computer aided design (CAD) software to generate a three-dimensional model of the cheongsam, and initially fitting it to the human body in a static state, wherein the cheongsam design includes style, slit position, and fabric selection.

[0016] Preferably, the finite element model of the cheongsam is constructed, and the fabric parameters obtained through standardized fabric mechanical property testing are introduced into the finite element model of the cheongsam and the human body to evaluate the displacement and deformation characteristics of the cheongsam under different actions, including the following specific steps:

[0017] S21, the fabric is modeled as a combination of a particle-spring model and a shell model, the particle-spring model regards each vertex of the triangular mesh model of the cheongsam as a particle, and different types of springs are connected between the particles, and the shell model regards each triangular patch of the triangular mesh as a thin shell element capable of resisting bending, the human body three-dimensional mesh is set as a collision body and is given attributes such as friction coefficient, motion sequence data is applied to the human body skeletal system to drive the human body collision body to move according to the real action, fabric parameters are obtained through standardized fabric mechanical property testing, including fabric tensile stiffness, shear stiffness, bending stiffness, density and friction coefficient, wherein the tensile and shear stiffness of the fabric is measured by a standardized fabric mechanical property tester, the stress-strain curve of different fabrics is obtained through uniaxial tensile and off-axis tensile testing of the fabric sample, the tensile properties of the fabric are tested by fixed load tensile and fixed elongation tensile, a certain load is applied to the ends of the sample to stretch it, the tensile length under the fixed load is observed, and the elastic elongation, elastic recovery rate and plastic deformation rate of the fabric are obtained, the bending stiffness of the fabric is obtained through draping test, the bending stiffness represents the draping property and wrinkle resistance, the bending stiffness of the harder fabric is high, and the bending stiffness of the softer fabric is low, and the friction coefficient of the fabric is measured by using a friction coefficient tester;

[0018] S22, static and dynamic stress simulation of the cheongsam model is performed through a finite element analysis software, stress, strain and pressure distribution of each part during the action process are calculated, contact relationship between the skin and the cheongsam is defined in the simulation, load and boundary conditions are applied, mesh division is performed for solution, and displacement and deformation distribution parameters of the skin surface under each action are output, common finite element software available on the market for model analysis includes ABAQUS, ANSYS and MSC, such software can construct nonlinear partial differential equations based on the framework of continuum mechanics and perform numerical approximation solution, and the displacement and deformation results of the skin under four motion postures can be obtained through static stress and dynamic stress / displacement analysis by using the software, the leg model of the motion posture is imported into the ABAQUS finite element analysis software, load is applied to each part to create boundary conditions according to the pressure comfort threshold of each part, mesh division is performed for solution calculation, and the displacement and deformation results and stress conditions of the skin of each part under four motion postures are simulated.

[0019] Preferably, the cheongsam comfort evaluation model is constructed, the fitting data of the cheongsam and the human body are imported into the cheongsam comfort evaluation model, and the overall comfort of the cheongsam is evaluated, including the following specific steps:

[0020] S31, the pressure comfort and friction comfort of the cheongsam are evaluated based on the simulation data of the finite element analysis, wherein the pressure comfort index evaluation formula of the vertex i is: , wherein, The pressure of the skin by the vertex i comes from the simulation result of the second step, The comfort pressure threshold is different for different body parts, for example, the threshold is lower at the bone protrusions and higher at the muscle thick places, wherein the friction discomfort index evaluation formula of the vertex i is: , wherein, The friction coefficient between the fabric and the skin is obtained from the fabric test, The normal pressure of the skin by the vertex i, i.e. the collision force, The total distance of the vertex i sliding relative to the skin during the entire movement;

[0021] S32, the pressure comfort index and the friction comfort index of the cheongsam are substituted into the comprehensive comfort index evaluation formula to evaluate the comfort of the cheongsam, wherein the comprehensive comfort index evaluation formula of the vertex i is: , wherein the closer the comprehensive comfort value is to 1, the more comfortable it is, And The pressure weight and the friction weight represent the relative importance of the pressure and the friction on the comfort, The maximum friction discomfort index is obtained by statistically analyzing the comprehensive comfort index of all vertices on the cheongsam, and the overall score is obtained by area-weighted average of all vertices, and the overall comfort evaluation formula is used to evaluate the overall comfort of the cheongsam, wherein the overall comfort evaluation formula is: , wherein, The area of the patch of the vertex i is area-weighted average of all vertices.

[0022] Preferably, the wear evaluation model is constructed, and the cheongsam stretching data is imported into the wear evaluation model to evaluate the fabric wear and the influence of fabric wear, including the following specific steps: combining point wear analysis and distance analysis from each point to the split position to analyze the influence caused by wear,

[0023] S41, the cheongsam stretching data of the finite element analysis is substituted into the easy-wear index evaluation formula to evaluate the wear of the fabric, wherein the easy-wear index evaluation formula is: , wherein, The maximum tensile stress per square meter of the vertex i during the entire movement, T is the ultimate tensile strength of the fabric, which is obtained by standard fabric tensile test, and the maximum force when the fabric sample is pulled off is recorded in the test, and then divided by the cross-sectional area of the sample;

[0024] S42, the fabric is worn, the crack will not stay at the origin, under the action of stress, the crack will expand along the direction perpendicular to the principal stress, in the woven fabric with different strength in warp and weft direction, the crack tends to extend along the yarn direction, compare the easy-wear index with the high-wear risk threshold value, and the high-wear risk threshold value is each high-wear risk point, set the high-wear risk point as the potential crack starting point, determine the starting point and edge line of the slit on the cheongsam three-dimensional model, for each high-wear risk point, calculate the three-dimensional Euclidean distance to the nearest slit edge, the slit itself is a stress concentration area, wear is more likely to start and expand from here, wear in the slit area may cause the failure of the garment structure, such as the cracking of the entire side seam, the easy-wear index and the three-dimensional Euclidean distance of the high-wear risk point to the nearest slit edge are substituted into the wear influence severity evaluation formula to evaluate the wear influence situation, wherein the wear influence severity evaluation formula is: wherein, the distance to the nearest slit edge, L is the characteristic decay length, which is set according to the ratio of the total length of the cheongsam and the slit length, indicating the speed of influence decay with distance;

[0025] S43, substitute the wear influence severity index into the cheongsam overall wear risk evaluation formula to evaluate the overall wear of the cheongsam, wherein the cheongsam overall wear risk evaluation formula is: wherein, is a weight coefficient, N is the total number of vertices, is the maximum influence severity index among all vertices, is the sum of all vertex influence severity indexes, and the cheongsam overall wear risk is normalized to the interval [0, 1], wherein the normalization formula is: wherein, is the minimum value of the cheongsam overall wear risk, is the maximum value of the cheongsam overall wear risk.

[0026] Preferably, the comprehensive matching model is constructed, the overall comfort and the overall wear risk are introduced into the comprehensive matching model to evaluate the comprehensive performance of different cheongsam design schemes, which includes the following specific steps:

[0027] The overall comfort and the overall wear risk of the cheongsam are calculated by weighting to obtain the comprehensive matching degree, the comprehensive matching degrees are sorted, and the cheongsam customization scheme with the highest matching degree is selected, wherein the comprehensive matching degree calculation formula is: wherein, and are weights.

[0028] The cheongsam customization analysis system based on scene analysis is realized based on the above-mentioned cheongsam customization analysis method based on scene analysis, which specifically includes:

[0029] A data acquisition module is configured to acquire body information and action sequence information of a customer and design an initial cheongsam three-dimensional image.

[0030] A cheongsam dynamic behavior analysis module is configured to evaluate displacement and deformation characteristics of the cheongsam under different actions based on fabric parameters obtained through standardized fabric mechanical property testing.

[0031] A comfort evaluation module is configured to evaluate overall comfort of the cheongsam based on fitting data of the cheongsam and the human body.

[0032] A wear evaluation module is configured to evaluate fabric wear and fabric wear influence based on cheongsam stretching data.

[0033] A comprehensive matching module is configured to evaluate comprehensive performance of different cheongsam design schemes based on overall comfort and overall wear risk.

[0034] An electronic device includes a processor and a memory, wherein the memory stores a computer program that can be invoked by the processor.

[0035] The processor executes the above-mentioned cheongsam customization analysis method based on scenario analysis by invoking the computer program stored in the memory.

[0036] A computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to execute the above-mentioned cheongsam customization analysis method based on scenario analysis.

[0037] Compared with the prior art, the beneficial effects of the present application are:

[0038] The present application acquires body information and action sequence information of a customer and designs an initial cheongsam three-dimensional image, constructs a cheongsam finite element model, imports fabric parameters obtained through standardized fabric mechanical property testing into the cheongsam finite element model, evaluates displacement and deformation characteristics of the cheongsam under different actions, constructs a cheongsam comfort evaluation model, imports fitting data of the cheongsam and the human body into the cheongsam comfort evaluation model, evaluates overall comfort of the cheongsam, constructs a wear evaluation model, imports cheongsam stretching data into the wear evaluation model to evaluate fabric wear and fabric wear influence, constructs a comprehensive matching model, imports overall comfort and overall wear risk into the comprehensive matching model to evaluate comprehensive performance of different cheongsam design schemes, and improves the precision and comfort of cheongsam customization. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 The present application is a schematic diagram of the overall process of the cheongsam customization analysis method based on scenario analysis.

[0040] Figure 2 The present application is a finite element analysis flowchart.

[0041] Figure 3 a comprehensive matching degree evaluation flowchart;

[0042] Figure 4 a schematic diagram of a whole framework of a corset customization analysis system based on scene analysis of the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0044] Embodiment 1

[0045] Please refer to Figure 1 - Figure 3 An embodiment provided by the present application is a corset customization analysis method based on scene analysis, which comprises the following specific steps:

[0046] obtaining body appearance information and action sequence information of a customer, and designing an initial corset three-dimensional image;

[0047] constructing a corset finite element model, importing fabric parameters obtained through standardized fabric mechanical property testing into the corset finite element model, and evaluating displacement and deformation characteristics of the corset under different actions;

[0048] constructing a corset comfort evaluation model, importing fitting data of the corset and the human body into the corset comfort evaluation model, and evaluating overall comfort of the corset;

[0049] constructing a wear evaluation model, importing corset stretching data into the wear evaluation model to evaluate fabric wear and fabric wear influence;

[0050] constructing a comprehensive matching model, importing overall comfort and overall wear risk into the comprehensive matching model to evaluate comprehensive performance of different corset design schemes.

[0051] In the present embodiment, it needs to be specifically described that obtaining body appearance information and action sequence information of a customer, and designing an initial corset three-dimensional image comprises the following specific steps:

[0052] S11, using a 3D body scanner and a traditional measuring tool, obtaining accurate body dimensions of the customer, including height, bust, waist, and hip, and constructing a human body three-dimensional model, dividing the human body into a triangular mesh composed of vertices and faces;

[0053] S12, acquire the action sequence of the customer in the target scene through a motion capture sensor (such as an inertial sensor, a camera), and convert it into digital action data, wherein the action sequence includes five main actions of a person standing still, a person walking with the largest stride, a person bending, a person in a half-squatting state, and a person lifting the leg to climb stairs, and other auxiliary actions, wherein a time sequence data records the global transformation matrix of all bone joints in each frame, including position and rotation;

[0054] S13, based on the human three-dimensional model, generate a three-dimensional model of the cheongsam using computer-aided design (CAD) software, and initially fit it to the human body statically, wherein the cheongsam design includes style, slit position, and fabric selection.

[0055] In this embodiment, it needs to be specifically explained that the finite element model of the cheongsam is constructed, the fabric parameters obtained through the standardized fabric mechanical property test are imported into the finite element model of the cheongsam and the human body, and the displacement and deformation characteristics of the cheongsam under different actions are evaluated, including the following specific steps:

[0056] S21, model the fabric as a combination of a particle-spring model and a shell model, the particle-spring model regards each vertex of the triangular mesh model of the cheongsam as a particle, and connects different types of springs between the particles, the shell model regards each triangle of the triangular mesh as a thin shell element that can resist bending, sets the human three-dimensional mesh as a collision body and gives it attributes such as friction coefficient, applies the motion sequence data to the human bone system to drive the human collision body to move according to the real action, obtains the fabric parameters through the standardized fabric mechanical property test, the fabric parameters include the tensile stiffness, shear stiffness, bending stiffness, density and friction coefficient of the fabric, wherein the tensile and shear stiffness of the fabric is measured by a standardized fabric mechanical property tester, the uniaxial tensile and bias tensile test is performed on the fabric sample, the stress-strain curve of different fabrics is obtained, the tensile properties of the fabric are tested by fixed load tensile and fixed elongation tensile, a certain load is applied to the ends of the sample to stretch it, the stretching length under the fixed load is observed, and the elastic elongation, elastic recovery rate and plastic deformation rate of the fabric are obtained, the bending stiffness of the fabric is obtained through the draping test, the bending stiffness represents the draping property and anti-wrinkle ability, the bending stiffness of the harder fabric is high, and the bending stiffness of the softer fabric is low, and the friction coefficient of the fabric is measured by a friction coefficient tester;

[0057] S22, static and dynamic stress simulation of the cheongsam model is performed by finite element analysis software, stress, strain and pressure distribution of each part in the action process are calculated, contact relationship between skin and cheongsam is defined in the simulation, load and boundary conditions are applied, mesh division is performed for solution, displacement and deformation distribution parameters of the skin surface under each action are output, common finite element software available for model analysis on the market includes ABAQUS, ANSYS and MSC, such software can construct nonlinear partial differential equations based on the framework of continuum mechanics and perform numerical approximation solution, displacement and deformation results of the skin under four movement postures can be obtained through static stress and dynamic stress / displacement analysis by means of the software, the leg model of the movement posture is imported into the ABAQUS finite element analysis software, boundary conditions are created by applying load to each part according to the pressure comfort threshold of each part, mesh division is performed for solution calculation, displacement and deformation results and stress conditions of each part of the skin under four movement postures are simulated and obtained;

[0058] In the finite element analysis process, the triangular mesh patches of the cheongsam are simplified into thin shell elements to simulate the bending, stretching and shearing properties of the fabric, the surface skin tissue of the human body model is regarded as a continuum with certain elasticity or viscoelasticity, material parameters such as elastic modulus, Poisson's ratio and density are defined, mesh division of the cheongsam and the human body is performed, the grid quality is checked, including the aspect ratio, twist angle and Jacobian value of the element, to ensure that the grid quality meets the requirements of finite element solution, in the contact definition stage, the contact relationship between the cheongsam and the human skin is established, the contact type can be set as frictional contact, parameters such as friction coefficient, contact stiffness and separation criterion are defined to reflect the interaction between the fabric and the skin, according to the human posture and movement range, skeletal driving or displacement constraint conditions are applied to simulate the posture changes of the human body under different actions such as walking, sitting, bending and lifting the leg, the edge part of the cheongsam is set as a constraint boundary condition in contact with the human body boundary to reflect the stress and deformation under the real wearing state, in the load setting aspect, according to the pressure comfort threshold of each human body part and the relative motion relationship between the fabric and the skin, corresponding contact load, gravity load or inertia load is applied, static and dynamic loading conditions are defined, for dynamic action process, time sequence displacement or acceleration can be input to the skeletal system to drive the human body model to perform action simulation, stress, strain and contact pressure distribution changes of the cheongsam in the dynamic wearing process are obtained, after the solution is completed, the results are post-processed and analyzed, stress contour, strain distribution, displacement field and contact pressure distribution of the cheongsam and human skin under different action postures are output.

[0059] In this embodiment, it needs to be specifically explained that the cheongsam comfort evaluation model is constructed, the fitting data of the cheongsam and the human body are imported into the cheongsam comfort evaluation model to evaluate the overall comfort of the cheongsam, including the following specific steps:

[0060] S31, evaluate the pressure comfort and friction comfort of the cheongsam based on the simulation data of finite element analysis, wherein the pressure comfort index evaluation formula of the vertex i is: wherein, is the pressure of the vertex i on the skin, the simulation result from the second step, is the comfortable pressure threshold, different body parts have different thresholds, the threshold at the bone protrusion is lower, and the threshold at the muscle thick place is higher, and the pressure comfort index of 0 indicates comfort, and the greater the positive value indicates the greater discomfort, wherein the friction discomfort index evaluation formula of the vertex i is: wherein, is the friction coefficient between the fabric and the skin (obtained from fabric testing), is the normal pressure (i.e. collision force) of the vertex i on the skin, is the total distance of the vertex i sliding relative to the skin during the entire movement, the mechanical simulation result from the second step;

[0061] S32, substitute the pressure comfort index and the friction comfort index of the cheongsam into the comprehensive comfort index evaluation formula to evaluate the comfort of the cheongsam, wherein the comprehensive comfort index evaluation formula of the vertex i is: wherein, the closer the comprehensive comfort value is to 1, the more comfortable it is, and are the pressure weight and the friction weight, indicating the relative importance of the pressure and the friction on the comfort, is the maximum friction discomfort index, the comprehensive comfort index of all vertices on the cheongsam is counted, and the overall score is obtained by area-weighted average of all vertices, the comprehensive comfort index of each vertex is substituted into the overall comfort evaluation formula to evaluate the overall comfort of the cheongsam, wherein the overall comfort evaluation formula is: wherein, is the area of the vertex i, and the overall comfort is obtained by area-weighted average of all vertices.

[0062] In this embodiment, it needs to be specifically explained that a wear evaluation model is constructed, and the cheongsam stretching data is imported into the wear evaluation model to evaluate the fabric wear and the influence of fabric wear, including the following specific steps: combining the point wear analysis and the distance analysis from each point to the split position to analyze the influence caused by wear,

[0063] S41, substitute the finite element analysis cheongsam stretching data into the easy-wear index evaluation formula to evaluate the wear of the fabric, wherein the easy-wear index evaluation formula is: wherein, For the maximum tensile stress per square meter of the vertex i throughout the movement, T is the ultimate tensile strength of the fabric, which is obtained by a standard fabric tensile test, and the maximum force recorded when the fabric sample is pulled to break is divided by the cross-sectional area of the sample;

[0064] S42, the fabric is abraded, the crack does not stay at the origin, under the action of stress, the crack will expand along the direction perpendicular to the principal stress, in the woven fabric with different strength in warp and weft direction, the crack tends to extend along the yarn direction, compare the easy-abrasion index with the high-abrasion risk threshold value, and the high-abrasion risk point is set as the potential crack starting point, determine the starting point and edge line of the slit on the cheongsam three-dimensional model, for each high-abrasion risk point, calculate the three-dimensional Euclidean distance to the nearest slit edge, the slit itself is a stress concentration area, and abrasion is more likely to start and expand from here, and the abrasion of the slit area may cause the failure of the garment structure, such as the cracking of the entire side seam, and the easy-abrasion index and the three-dimensional Euclidean distance of the high-abrasion risk point to the nearest slit edge are substituted into the abrasion impact severity evaluation formula to evaluate the abrasion impact situation, wherein the abrasion impact severity evaluation formula is: wherein, the distance to the nearest slit edge, L is the characteristic decay length, which is set according to the ratio of the total length of the cheongsam and the slit length, indicating the speed of the influence decaying with distance;

[0065] S43, substitute the abrasion impact severity index into the overall abrasion risk evaluation formula of the cheongsam to evaluate the overall abrasion of the cheongsam, wherein the overall abrasion risk evaluation formula of the cheongsam is: wherein, is a weight coefficient, N is the total number of vertices, is the maximum impact severity index among all vertices, is the sum of the impact severity indexes of all vertices, and the overall abrasion risk of the cheongsam is normalized to the interval [0, 1], wherein the normalization formula is: wherein, is the minimum value of the overall abrasion risk of the cheongsam, is the maximum value of the overall abrasion risk of the cheongsam.

[0066] In this embodiment, it needs to be specifically explained that a comprehensive matching model is constructed, and the overall comfort and the overall abrasion risk are introduced into the comprehensive matching model to evaluate the comprehensive performance of different cheongsam design schemes, including the following specific steps:

[0067] The overall comfort and the overall abrasion risk of the cheongsam are calculated by weighting to obtain the comprehensive matching degree, the comprehensive matching degrees are sorted, and the cheongsam customization scheme with the highest matching degree is selected, wherein the comprehensive matching degree calculation formula is: wherein, and is a weight.

[0068] In this embodiment, the values of the parameters are set in the following manner: the various thresholds involved in the embodiment of the application (including the comfortable pressure threshold, the high wear risk threshold, the characteristic attenuation length, and various weight coefficients) are obtained through fitting analysis based on experimental data and simulation data to ensure that the thresholds have objective and quantifiable basis. The specific fitting process includes the following steps:

[0069] Data acquisition: obtain human skin pressure distribution, fabric stress-strain data, friction parameters, and subjective comfort rating data of the subjects through human fitting experiments, fabric mechanical property tests, and finite element simulation results. During the experiment, multi-dimensional data is collected synchronously using a pressure sensor array, three-dimensional motion capture, and fabric strain sensing technology;

[0070] Comfortable pressure threshold fitting: establish a corresponding relationship between the skin pressure values of each test point and the subjective comfort ratings of the subjects, and use logistic regression, piecewise linear regression, or curve fitting methods to determine the pressure value corresponding to the neutral level of subjective rating as the comfortable pressure threshold; this threshold can be modified according to different body types, fabric thickness, or sensitivity parameters;

[0071] High wear risk threshold fitting: obtain the wear life or damage probability under different stress levels through fabric fatigue tests and accelerated wear experiments, and use fitting methods to determine the stress value at which 50% of the samples show visible wear as the high wear risk threshold;

[0072] Characteristic attenuation length fitting: based on simulation data or actual wear distribution results, statistically analyze the variation of wear influence degree with the distance from the structure edge, and use an exponential decay model;

[0073] Weight coefficient determination: combine questionnaire survey results and multi-objective optimization analysis, and use the analytic hierarchy process or the minimum error weighting method to determine parameters such as pressure comfort weight, friction comfort weight, and wear risk weight;

[0074] Threshold verification and adaptive optimization: perform cross-validation and robustness analysis on different subject samples to evaluate the sensitivity of the thresholds to comfort and wear prediction results; at the same time, machine learning methods can be used to adaptively optimize and update the thresholds to adapt to different scenarios and individual characteristics;

[0075] The various thresholds obtained through the above methods have statistical significance and physical interpretability, which can effectively improve the accuracy and reliability of the cheongsam comfort evaluation model and the wear risk model;

[0076] The benefits of this embodiment over the prior art are:

[0077] The application obtains body appearance information and action sequence information of a customer, designs an initial robe three-dimensional image, constructs a robe finite element model, imports fabric parameters obtained through standardized fabric mechanical property testing into the robe finite element model, evaluates displacement and deformation characteristics of the robe under different actions, constructs a robe comfort evaluation model, imports fitting data of the robe and the human body into the robe comfort evaluation model, evaluates overall comfort of the robe, constructs a wear evaluation model, imports robe stretching data into the wear evaluation model to evaluate fabric wear and fabric wear influence, and constructs a comprehensive matching model, imports overall comfort and overall wear risk into the comprehensive matching model to evaluate comprehensive performance of different robe design schemes, thereby improving precision and comfort of robe customization.

[0078] Embodiment 2

[0079] As shown in Figure 4 the robe customization analysis system based on scene analysis is implemented based on the above robe customization analysis method based on scene analysis, and specifically includes a data acquisition module, a robe dynamic behavior analysis module, a comfort evaluation module, a wear evaluation module, and a comprehensive matching module. The data acquisition module is used to obtain body appearance information and action sequence information of a customer and design an initial robe three-dimensional image. The robe dynamic behavior analysis module is used to evaluate displacement and deformation characteristics of the robe under different actions through fabric parameters obtained through standardized fabric mechanical property testing. The comfort evaluation module is used to evaluate overall comfort of the robe through fitting data of the robe and the human body. The wear evaluation module is used to evaluate fabric wear and fabric wear influence through robe stretching data. The comprehensive matching module is used to evaluate comprehensive performance of different robe design schemes through overall comfort and overall wear risk.

[0080] Embodiment 3

[0081] The embodiment provides an electronic device, including a processor and a memory, wherein the memory stores a computer program that can be called by the processor;

[0082] The processor executes the above robe customization analysis method based on scene analysis by calling the computer program stored in the memory.

[0083] The electronic device can have a large difference due to configuration or performance, and can include one or more processors (Central Processing Units, CPUs) and one or more memories, wherein the memory stores at least one computer program loaded and executed by the processor to implement the scene analysis-based corset customization analysis method provided by the above-mentioned scene analysis-based corset customization analysis method embodiment. The electronic device can also include other components for implementing device functions, for example, the electronic device can also have a wired or wireless network interface and an input and output interface, and the like, so as to perform data input and output. This embodiment will not be described here.

[0084] Embodiment 4

[0085] The embodiment provides a computer readable storage medium, which stores an erasable computer program.

[0086] When the computer program runs on the computer device, the computer device is caused to execute the above-mentioned scene analysis-based corset customization analysis method.

[0087] For example, the computer readable storage medium can be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0088] The above-described embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, the above-described embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions according to the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center through a wired network or / and a wireless network. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, or the like including a set of one or more available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state disk.

Claims

1. A method for analyzing qipao customization based on scene analysis, characterized in that, It includes the following specific steps: Obtain the customer's physical appearance and movement sequence information, and design an initial 3D image of the cheongsam; A finite element model of the cheongsam was constructed, and the fabric parameters obtained through standardized fabric mechanical property testing were imported into the finite element model of the cheongsam to evaluate the displacement and deformation characteristics of the cheongsam under different movements. A comfort assessment model for cheongsams was constructed. Fitting data between the cheongsam and the human body was imported into the model to evaluate the overall comfort of the cheongsam. The specific steps included: evaluating the pressure comfort and friction comfort of the cheongsam based on simulation data from finite element analysis. The pressure comfort index evaluation formula for vertex i is as follows: ,in, The pressure of vertex i on the skin. The comfort pressure threshold is given by the formula for evaluating the frictional discomfort index at vertex i: ,in, The coefficient of friction between the fabric and the skin. Let i be the normal pressure exerted by vertex i on the skin. Let be the total distance that vertex i slides relative to the skin during the entire movement. Substitute the pressure comfort index and friction comfort index of the cheongsam into the comprehensive comfort index evaluation formula to assess the comfort of the cheongsam. The comprehensive comfort index evaluation formula for vertex i is: ,in, and For pressure weights and friction weights, To determine the maximum friction discomfort index, the overall comfort index of all vertices on the cheongsam was statistically analyzed. A weighted average of all vertices was used to obtain the overall score. The overall comfort index of each vertex was then substituted into the overall comfort assessment formula to evaluate the overall comfort of the cheongsam. The overall comfort assessment formula is as follows: ,in, Let be the area of ​​the face at vertex i, and then take the area-weighted average over all vertices. A wear assessment model was constructed, and the stretching data of the cheongsam was imported into the model to evaluate the fabric wear and its impact. The specific steps included: substituting the cheongsam stretching data from finite element analysis into the wear index assessment formula to evaluate the fabric wear. The wear index assessment formula is as follows: ,in, Let be the maximum tensile stress per square meter at vertex i during the entire movement, and T be the ultimate tensile strength of the fabric. The wear index is compared with a high wear risk threshold; points exceeding the high wear risk threshold are considered high wear risk points and are designated as potential crack initiation points. On the 3D model of the cheongsam, the starting point and edge line of the slit are determined. For each high wear risk point, the 3D Euclidean distance to the nearest slit edge is calculated. The wear index and the 3D Euclidean distance from the high wear risk point to the nearest slit edge are substituted into the wear impact severity assessment formula to evaluate the wear impact. The wear impact severity assessment formula is: ,in, The distance to the nearest slit edge, L, is the characteristic attenuation length. The wear severity index is substituted into the overall wear risk assessment formula for the cheongsam to evaluate its overall wear condition. The overall wear risk assessment formula for the cheongsam is as follows: ,in, Here, N is the weighting coefficient, and N is the total number of vertices. It is the largest impact severity index among all vertices. The sum of the severity indices of all vertices is used, and the overall wear risk of the cheongsam is normalized and mapped to the [0,1] interval; A comprehensive matching model was constructed, and overall comfort and overall wear risk were incorporated into the comprehensive matching model to evaluate the overall performance of different cheongsam design schemes.

2. The qipao customization analysis method based on scene analysis as described in claim 1, characterized in that, The process of obtaining the customer's physical appearance and movement sequence information, and designing the initial 3D image of the cheongsam, includes the following specific steps: S11. Using a 3D body scanner and traditional measuring tools, obtain the client's precise body dimensions and construct a three-dimensional human body model, dividing the human body into a triangular mesh composed of vertices and faces; S12. Acquire the customer's motion sequence through motion capture sensors and convert it into digital motion data; S13. Based on the human body 3D model, use computer-aided design software to generate a 3D model of the cheongsam and initially statically fit it onto the human body.

3. The qipao customization analysis method based on scene analysis as described in claim 2, characterized in that, The construction of the finite element model of the cheongsam involves importing fabric parameters obtained through standardized fabric mechanical property testing into the finite element model of the cheongsam and the human body, and evaluating the displacement and deformation characteristics of the cheongsam under different movements. The specific steps include: S21. Obtain fabric parameters through standardized fabric mechanical property testing. Fabric parameters include tensile stiffness, shear stiffness, bending stiffness, density, and coefficient of friction. S22. Static and dynamic stress simulations of the cheongsam model are performed using finite element analysis software to obtain the stress, strain, and pressure distribution of each part during the movement. The contact relationship between the skin and the cheongsam is defined in the simulation, loads and boundary conditions are applied, mesh generation and solution are performed, and the displacement and deformation distribution parameters of the skin surface under each movement are output.

4. The qipao customization analysis method based on scene analysis as described in claim 3, characterized in that, The construction of the comprehensive matching model, which incorporates overall comfort and overall wear risk into the comprehensive matching model to evaluate the overall performance of different cheongsam design schemes, includes the following specific steps: The overall comfort and the risk of wear and tear on the cheongsam are weighted and calculated to achieve a comprehensive matching degree. The comprehensive matching degrees are then ranked, and the cheongsam customization plan with the highest matching degree is selected.

5. A cheongsam customization analysis system based on scene analysis, implemented based on the cheongsam customization analysis method based on scene analysis as described in any one of claims 1-4, characterized in that, Specifically, it includes: The data acquisition module is used to acquire the customer's physical appearance information and action sequence information, and to design the initial 3D image of the cheongsam; The cheongsam dynamic behavior analysis module is used to evaluate the displacement and deformation characteristics of the cheongsam under different movements by using fabric parameters obtained from standardized fabric mechanical performance tests. The comfort assessment module is used to evaluate the overall comfort of the cheongsam by using data on the fit between the cheongsam and the human body. The wear assessment module is used to assess the wear condition of the fabric and the impact of wear on the fabric by using the stretching data of the cheongsam. The comprehensive matching module is used to assess the overall performance of different cheongsam design schemes by evaluating overall comfort and overall wear risk.

6. An electronic device, comprising: A processor and a memory, wherein the memory stores a computer program that can be called by the processor; The characteristic feature is that the processor executes the qipao customization analysis method based on scene analysis as described in any one of claims 1-4 by calling the computer program stored in the memory.

7. A computer-readable storage medium, characterized in that, The system stores instructions that, when executed on a computer, cause the computer to perform the cheongsam customization analysis method based on scene analysis as described in any one of claims 1-4.

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