WO2023147712A1 - Procédé d'évaluation de l'ajustement dynamique d'un vêtement - Google Patents

Procédé d'évaluation de l'ajustement dynamique d'un vêtement Download PDF

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Publication number
WO2023147712A1
WO2023147712A1 PCT/CN2022/078593 CN2022078593W WO2023147712A1 WO 2023147712 A1 WO2023147712 A1 WO 2023147712A1 CN 2022078593 W CN2022078593 W CN 2022078593W WO 2023147712 A1 WO2023147712 A1 WO 2023147712A1
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Prior art keywords
clothing
virtual
dynamic
fit
garment
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PCT/CN2022/078593
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English (en)
Chinese (zh)
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何佳臻
彭燕飞
薛萧昱
卢业虎
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苏州大学
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Publication of WO2023147712A1 publication Critical patent/WO2023147712A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/0601—Electronic shopping [e-shopping]
    • G06Q30/0641—Shopping interfaces
    • G06Q30/0643—Graphical representation of items or shoppers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T13/00—Animation
    • G06T13/20—3D [Three Dimensional] animation
    • G06T13/40—3D [Three Dimensional] animation of characters, e.g. humans, animals or virtual beings

Definitions

  • the invention relates to the technical field of clothing fit evaluation, in particular to a method for evaluating clothing dynamic fit.
  • the fit of clothing is an important factor affecting its wearing performance. Wearing unfit clothing often affects the mobility and comfort of workers, resulting in a reduction in work efficiency; at the same time, in today's era of rapid Internet development, online shopping has become an important aspect for people.
  • the main way of clothing consumption behavior but because the real try-on cannot be carried out in the network environment, the rate of returns and exchanges due to inappropriate fit is as high as 50%, which brings great inconvenience to both buyers and sellers. Therefore, the fit assessment of garments is of paramount importance. However, the traditional static fit evaluation can only rely on mannequins or real people to try on to subjectively evaluate the fit of clothing.
  • the first type of method is determined by subjective evaluation, and there is no objective data for reference.
  • the human body is covered by clothing, and experts or models themselves cannot fully observe or perceive the contact between the clothing and the human body, which may affect the local fit of the clothing. Insufficient discrimination.
  • the second type of method needs to use a three-dimensional scanner, but most of the three-dimensional scanners can only scan static objects when evaluating fit.
  • the technical problem to be solved by the present invention is to solve the problem in the prior art that the clothing fit cannot be efficiently evaluated in the real state of movement and posture.
  • the present invention provides a method for assessing the dynamic fit of clothing, including:
  • the dynamic fit evaluation of the clothing part and the whole is carried out.
  • said acquiring the body size data of the wearing object comprises:
  • the body size data of the wearing object is obtained by using a three-dimensional human body scanning technology.
  • the garment template file is an electronic file derived from the garment template drawn in the garment CAD software.
  • the three-dimensional virtual software is Clo3D.
  • the clothing fit evaluation gesture is constructed by screening the common action attributes of the clothing object according to the operation characteristics of the clothing object.
  • said assessing the posture according to the pre-selected clothing fit, establishing the virtual posture of the static virtual model, and obtaining the dynamic virtual model includes:
  • the character animation generating website is Adobe's character animation website.
  • said performing partial and overall dynamic fit evaluation of clothing according to said dynamic virtual fitting model includes:
  • the subjective scale evaluation method uses a five-level Likert scale as a scale to score the dynamic fit of clothing.
  • the dynamic fit evaluation of the local and overall clothing according to the dynamic virtual fitting model includes:
  • the garment dynamic fit evaluation result does not meet the fit requirement, modify the garment template according to the garment dynamic fit evaluation result, and re-evaluate the garment dynamic fit.
  • a method for assessing the dynamic fit of clothing uses three-dimensional body scanning technology to obtain body size data of the object to be dressed, constructs a static virtual model, constructs a dynamic virtual model according to the common action attributes of the object to be dressed, and based on the dynamic virtual Models sew virtual clothing pieces and try them on, and get dressed virtual models with virtual action attributes, which realizes the transfer of the traditional clothing dynamic fit evaluation process based on clothing objects and real-life wearing experiments to the virtual environment.
  • the digital evaluation of clothing fit under different motion postures is realized, so that the dynamic fit evaluation of clothing is more convenient, efficient and cost-effective.
  • Fig. 1 is the flow chart of the first specific embodiment of a kind of garment dynamic fit evaluation method provided by the present invention
  • Fig. 2 is the flow chart of the second specific embodiment of a kind of garment dynamic fit assessment method provided by the present invention
  • Figure 3 is a translucent view of clothing, a clothing pressure diagram, and a clothing stress diagram
  • Figure 4 is a comparison diagram of the model modification
  • Fig. 5 is a flow chart of a third specific embodiment of a method for evaluating the dynamic fit of clothing provided by the present invention.
  • Fig. 6 is a technical flow chart provided by the present invention.
  • the core of the present invention is to provide a method for assessing the dynamic fit of clothing.
  • a dynamic virtual model is constructed according to the common action attributes of the clothing object, and virtual clothing pieces are stitched and tried on based on the dynamic virtual model to obtain a virtual clothing with virtual action attributes.
  • Dressed virtual models realize the digital evaluation of clothing fit under different motion postures, so that the dynamic fit evaluation of clothing is more convenient, efficient and cost-effective.
  • Fig. 1 is the flow chart of the first specific embodiment of a kind of clothing dynamic fit evaluation method provided by the present invention. The specific operation steps are as follows:
  • Step S101 Obtain the body size data of the wearing object
  • Step S102 Input the body size data into the three-dimensional virtual fitting software to establish a static virtual model
  • Step S103 Evaluate the pose according to the pre-selected clothing fit, use the character animation generation website to establish the virtual pose of the static avatar, and load the virtual pose to the static avatar to obtain a dynamic avatar;
  • Step S104 Import the garment template file into the 3D virtual fitting software, adjust the properties of the virtual fabric according to the parameters of the garment fabric, and obtain virtual garment pieces;
  • Step S105 Use the virtual clothing pieces to perform three-dimensional virtual fitting on the dynamic virtual model to obtain the dynamic virtual fitting model corresponding to the virtual motion;
  • Step S106 Carry out dynamic fit evaluation of the partial and overall clothing according to the dynamic virtual fitting model
  • character animation generating website is not limited to Adobe's character website, and is not limited in this embodiment of the present invention.
  • the garment dynamic fit evaluation method provided in this embodiment uses the dynamic virtual fitting model to perform partial and overall dynamic fit evaluation of clothing, and realizes the digital evaluation of clothing fit under different motion postures, so that the dynamic fit of clothing can be improved. Estimates are easier, more efficient and less expensive.
  • Fig. 2 is a flow chart of the second specific embodiment of a method for evaluating the dynamic fit of clothing provided by the present invention. Based on the above-mentioned embodiment, in this embodiment, the squatting action is selected as the evaluation of clothing fit Movement posture, the specific operation steps are as follows:
  • Step S201 Using a 3D scanner to obtain the body size data of the wearing object
  • Step S202 using the "model editor” function of the three-dimensional virtual software Clo3D to obtain a static virtual model based on the body size data of the object to be dressed;
  • Step S203 Select the squatting motion of the wearing object as the motion posture for clothing fit evaluation
  • Step S204 upload the static avatar to the character animation generation website, and give the avatar the action of squatting, and finally obtain a dynamic avatar with a squatting animation as a three-dimensional virtual fitting object;
  • the dynamic virtual model not only has the same body size as the dress object, but also has the squat action attribute of the dress object;
  • Step S205 Import the garment template file into the three-dimensional virtual software Clo3D, adjust the properties of the virtual fabric according to the parameters of the garment fabric, and obtain the virtual garment pieces;
  • Step S206 Use the virtual clothing pieces to perform three-dimensional virtual fitting on the dynamic virtual model, and obtain the dynamic virtual fitting model for the virtual squatting action;
  • Step S207 Generate clothing translucent view, clothing pressure map, and clothing stress map according to the dynamic virtual fitting model
  • the dress translucent view, clothing pressure map, and clothing stress map As shown in Figure 3, the dress translucent view, clothing pressure map, and clothing stress map
  • Step S208 Using a subjective scale evaluation method to evaluate the dynamic fit of the clothing part and the whole on the clothing translucent view, the clothing pressure map, and the clothing stress map;
  • the subjective evaluation uses a five-level Likert scale as a scale to score the dynamic fit of clothing; wherein, the five-level Likert scale uses -2, -1, 0, 1, and 2 to represent "very tight” respectively , “tight”, “moderate”, “loose”, “very loose”;
  • Table 1 is the result of the fit assessment of this embodiment
  • the garment model is made into a real garment, and a real person's clothing experiment is used to allow the experimenter to partially (waist circumference, bust circumference, hip circumference, sleeve length, trousers length, The six parts of the length of the garment) and the overall fit are evaluated, and the five-level Likert scale is also used as the scoring standard.
  • the evaluation results are also shown in Table 1. Comparing the evaluation results in the real dressing test and the three-dimensional virtual fitting, it can be seen that the evaluation results obtained by the method provided by the present invention are very similar to the fit results perceived by the subjects in the actual wearing process, which proves the The accuracy of the methods provided.
  • Step S209 If the result of the dynamic fit evaluation of the garment meets the fit requirement, then use the garment sample as the final sample; if the result of the dynamic fit evaluation of the garment does not meet the fit requirement, modify the garment sample and re-evaluate the garment dynamic fit;
  • Figure 4 is a comparison diagram of the model modification
  • the method for evaluating the dynamic fit of clothing uses the three-dimensional virtual fitting technology to realize the evaluation of the dynamic fit of clothing in a virtual environment, avoiding the actual clothing and real people's clothing experiment process that the traditional evaluation of the dynamic fit of clothing relies on.
  • the semi-transparent view, stress and pressure view provide a visual means for the comprehensive evaluation of the partial and overall fit of the garment, based on "digital model - virtual fitting in the state of motion - digital evaluation in the state of motion - correcting the digital model "The process can improve the efficiency of apparel product research and development and promote the green and sustainable development of the apparel manufacturing industry.
  • Fig. 5 is a flow chart of a third specific embodiment of a method for evaluating the dynamic fit of clothing provided by the present invention.
  • Fig. 6 is a technical flow chart provided by the present invention, based on the above implementation For example, in this embodiment, according to the operating characteristics of the clothing object, a plurality of common actions of the clothing object are screened as clothing fit evaluation gestures.
  • the specific operation steps are as follows: The specific operation steps are as follows:
  • Step S501 Obtain the body size data of the wearing object
  • Step S502 Establish a static virtual model with the same body size as the wearing object according to the body size data;
  • Step S503 Using the motion analysis method to analyze the operation characteristics of the wearing object, and select n representative motions as motions for clothing fit evaluation;
  • Step S505 Import the garment model into the 3D virtual software, adjust the properties of the virtual fabric according to the parameters of the garment fabric, and obtain the virtual garment pieces;
  • Step S507 Generate clothing translucent view, clothing pressure map, and clothing stress map according to the dynamic virtual fitting model C i ;
  • Step S508 Using a subjective scale evaluation method to evaluate the dynamic fit of the clothing part and the whole on the clothing translucent view, the clothing pressure map, and the clothing stress map;
  • Step S509 Repeat the garment dynamic fit assessment until the garment dynamic fit assessment under n virtual gestures is completed;
  • the garment dynamic fit evaluation method provided in this embodiment uses three-dimensional virtual fitting technology to transfer the traditional clothing dynamic fit evaluation process based on clothing objects and real-life wearing experiments to a virtual environment, realizing different motion postures
  • the digital evaluation of clothing fit under the environment makes the dynamic fit evaluation of clothing more convenient, efficient and cost-effective;
  • the relationship between the surfaces, combined with the stress map and pressure map of the clothing realizes the visual evaluation of the clothing fit, avoiding the inability to fully observe or perceive the contact between the clothing and the human body in the traditional real-life wearing experiment because the human body is covered by the clothing , to achieve a comprehensive visual judgment of the partial fit of clothing;
  • use the evaluation results in the virtual environment to directly modify the digital model, reduce the number of sample making, and reduce the industrial "model-sample-real person wearing evaluation-correction
  • the waste of resources brought about by the "model” cycle process forms a new garment development process based
  • each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.
  • the description is relatively simple, and for relevant details, please refer to the description of the method part.

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Abstract

Un procédé d'évaluation de l'ajustement dynamique d'un vêtement comprend les étapes consistant à : acquérir des données de taille corporelle d'un objet d'habillage (S101) ; créer un modèle virtuel statique en fonction des données de taille corporelle (S102) ; établir des postures de mouvement virtuel du modèle virtuel statique selon des postures de mouvement présélectionnées pour une évaluation d'ajustement de vêtement afin d'obtenir un modèle virtuel dynamique (S103) ; importer un fichier de modèle de vêtement dans un logiciel d'ajustement virtuel tridimensionnel, et ajuster des attributs d'un tissu virtuel en fonction de paramètres d'un tissu de vêtement pour obtenir une pièce découpée de vêtement virtuel (S104) ; réaliser un ajustement virtuel tridimensionnel sur le modèle virtuel dynamique à l'aide de la pièce découpée de vêtement virtuel, pour obtenir un modèle d'ajustement virtuel dynamique correspondant aux postures de mouvement virtuel (S105) ; et réaliser une évaluation d'ajustement dynamique sur une partie locale et une partie entière d'un vêtement selon le modèle d'ajustement virtuel dynamique (S106). Selon le procédé d'évaluation, un processus d'évaluation d'ajustement dynamique classique pour un vêtement qui peut uniquement être réalisé sur la base d'un vêtement physique et d'une expérience de port par une personne réelle est transféré à un environnement virtuel, ce qui permet de réaliser une évaluation numérique pour un ajustement de vêtement dans différentes postures de mouvement.
PCT/CN2022/078593 2022-02-07 2022-03-01 Procédé d'évaluation de l'ajustement dynamique d'un vêtement WO2023147712A1 (fr)

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