• Title, Summary, Keyword: virtual garment

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Analysis of Utilization of Virtual Try on Simulation and Consumers' Preference in Apparel Online Shopping (온라인 의류구매 시 가상착의 시뮬레이션 활용 및 선호도 분석)

  • Lim, Ho-Sun
    • Fashion & Textile Research Journal
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    • v.14 no.1
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    • pp.83-89
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    • 2012
  • Recent rapid development of computer, information communication and Web service technologies is exerting considerable effects on all industrial areas. As such digital technologies are also introduced to the clothing and fashion industry and create 'virtual garment environment' consisting of 3D virtual bodies, virtual garments and virtual try-on systems, consumers are now able to try virtual garments on their virtual body online. This study was conducted in order to analyze consumers' tendency of clothing purchase using 3D virtual simulation technology, which is increasing attention throughout the world, and to propose strategies on the development of virtual try-on technology for activating apparel online shopping. The subjects of this study were men and women aged 18 or older living in the North Carolina State, U.S., and a questionnaire survey was conducted with them on their tendency of apparel online shopping and their preference for real garments and virtual garments. According to the results of this study, consumers' awareness of apparel shopping using virtual try-on was still low. Moreover, in the results of surveying consumers' purchase preference for real garments and virtual garments, preference was highest for real garment (P), which was followed by virtual garments OA, OB and BB. Based on the results of this study, for the activation of apparel online shopping using virtual simulation technology, it is considered necessary to provide services implementing virtual try-on similar to consumers' actual try-on. This requires further active research and technology development on virtual try-on simulation using digital technologies.

Digital Hanbok Modeling for Virtual Characters : A Knowledge-driven Approach (가상캐릭터의 디지털 한복 모델링을 위한 지식기반 접근법)

  • Lee Bo-Ran;Oh Sue-Jung;Nam Yang-Hee
    • The KIPS Transactions:PartB
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    • v.11B no.6
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    • pp.683-690
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    • 2004
  • Garment modeling and simulation is now one of the important elements in broad range of digital contents. Though there have been recent products on garment simulation, general users do not know well enough how to design a virtual costume that meets some requirements about its specific clothing pattern. In particular, Hanbok - the Korean traditional costume - has many different characteristics against western ones in the aspect of its pattern design and of draping. This paper presents a knowledge-driven approach for virtual Hanbok modeling without knowing how to make real Hanbok. First, parameterized knowledge for several fabric types art solicited using visual similarity assessment from simulated and real cloth. Secondly, based on the analysis of designer's knowledge, we defined multi-level adjustment processes of Hanbok measurements with regard to body shape features for different virtual actors. An experimental system is developed as the form of a Maya plug-in and the result shows the applicability of the proposed method.

A Study on i-Fashion 3D Avatar's Consumer satisfaction & Comparison of 3D and Direct Masurement - Based of Domestic University Students

  • Choi, Eunhee;Do, Wolhee
    • Fashion & Textile Research Journal
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    • v.17 no.3
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    • pp.421-428
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    • 2015
  • This research is to understand customer satisfaction with virtual fitting based on a 3D body scanner and avatars as well as differences between avatars and the 'real me'. To this end, this research examined Korean college students to facilitate 3D body scanning, avatar generation and surveys. The author used 3D body scan data with direct measurements to identify differences between the 3D body scan data-based 'my avatar' and 'real me' in the virtual dress fitting system. The survey results on 'the level of customer awareness on 3D body scanner' found that the majority of both genders did not know about it and indicated a lower usability to incorporate IT technology into the fashion industry. The question in the 3D body scanning and avatar found an affirmative attitude. Satisfaction levels on the 3D avatars' similarity with 'own body' and garment fitting were positive and indicated a need for further technological improvements to express the avatars identical to customers' own body. More research is necessary for the accuracy of sizes for 3D body scanning that measure body sizes while wearing clothes. Avatars based on such datamay be less similar to 'own body' and cause customer dissatisfaction. Thus, further technology development is required to narrow gaps using data to make avatars that provide more accurate virtual fitting simulation services to customers.

A Comparison of Fit and Appearance between Real Pants with 3D Virtual Pants (실제착의와 3D 가상착의의 외관 유사도 평가에 관한 연구 - 여성복 바지원형을 중심으로 -)

  • Kim, Youngsook;Yin, Siya;Song, Hwa Kyung
    • Fashion & Textile Research Journal
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    • v.16 no.6
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    • pp.961-970
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    • 2014
  • Several retailers such as Target and Kohle's and their vendors have piloting the 3D clothing simulation programs to produce garment samples. However, few studies have verified the virtual fit information and 3d visualization process for pants, and no study compared the commercial 3D virtual programs. This study is designed to analyze similarity of fit and appearance between real pants with 3D virtual pants based on three 3D virtual programs (Optitex, CLO 3D, and i-Designer), three lower body types (slim, normal, and thick waist type), and fit status. We selected a representative model for each lower body type, produced their custom pants according to Lee and Nam's method(2007), and took photos of front, side and back view for visual analysis. Then, we virtually tried each model's custom pants on her parametric avatar developed by manually inputting their body measurements using the three 3D virtual program. Thirty fit experts compared the real fit to virtual fit. This study found that 'Optitex' and 'i-Designer' can visualize more effectively than 'CLO 3D' in many fit locations. Regarding the body types, 3D virtual program can visualize pants fit for 'thick waist body type' more preciously than the other body types. With respect to fit status, it does not affect much on the similarity overall.

Vector-Inner-Product-based Bending Force Calculation for Numerical Convergence Improvement (파티클 기반 직물 시뮬레이션의 수치해석 수렴성 개선을 위한 벡터 내적 방식의 굽힘력 계산기법)

  • Sul, In Hwan
    • Textile Science and Engineering
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    • v.56 no.4
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    • pp.215-221
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    • 2019
  • Realistic garment simulations are required not only for academic research but also for use in practical applications such as computer-aided garment design systems. There have been several previous approaches to simulate garment deformation, including the well-known continuum mechanics and fsinite element method. Although, the particle-based method has been more favored in the area of computer graphics, because of its numerical stability and calculation speed. However, the calculation of bending force and its derivatives is a major time bottleneck, along with the collision detection and linear system solving process. Therefore, this study proposes a new theoretical framework with a vector-inner-product-based bending force term to avoid heavy calculations incurred through the conventional angle-based formula. The commercial software $Mathematica^{(R)}$, was adopted to derive the tensor products efficiently; in addition, the final calculation speed benchmarking was tested using a three-pieced female garment data set. The sparsity of the final linear matrix was decreased and the resulting final calculation speed-up was 3.3%, for a virtual female garment dress simulation with 7,783 triangular elements.

A Study of the Relationship between 3D Model and 3D Garment Simulation

  • Kim, Yeo-Sook;Park, Hye-Won
    • Journal of the Korean Society of Clothing and Textiles
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    • v.36 no.6
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    • pp.631-640
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    • 2012
  • This research project investigates the differences of various body locations (between 3D body models) and drapes garments digitally onto 3D body models. Three different subject models will be given explication. It consisted of (1) data collection of three-dimensional scans (2) creation of 3D body representations (3) comparison of avatar shapes and measurements (4) visualization and assessment of 3D body models and their 3D virtual garments. The study tests a theory of impact by differences in avatars by pattern design. A visual inspection of avatars showed clear differences between the six avatar types (in the generating process); however, there was notably less difference between 3D garment simulations based upon the six avatars produced. This demonstrated that there was less influence on the 3D garments than was predicted after a visual inspection of the avatars.

Prototype Torso Pattern for Circular Knit using Virtual Garment Software (가상착의에 의한 환편물 상의의 패턴 설계 방법 연구)

  • Kim, Hyeong Jin;Kim,, Yeo-Sook
    • The Korean Journal of Community Living Science
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    • v.22 no.1
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    • pp.53-61
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    • 2011
  • We have made knitwear in a different way from the typical woven pattern; it does not have the dart, even for women's tops. The purpose of this research was to compare the fit and appearance of the torso pattern for circular knitted fabric between virtual try-on garments and real garments. First, a woman in her 20's was scanned by a 3D body scanner, and thus producing a virtual avatar. I prepared knit patterns and created a torso pattern appropriate for circular knitted fabric. Next, I measured the body size of the avatar. The 2D patterns for the torso and sleeves were developed using the Yuka Super ALPHA : Plus. The 3D virtual garments were made from the imported 2D patterns and were then tried on the 3D virtual avatars. Finally, the fit of the real garments and the virtual garments was compared. While the shape of the virtual try-on garments were similar to the real garments, the folding and sagging were different. This study found the length was the same as woven wear. However the actual bust size and the clothing size were the same which is not a typical characteristic of woven wear. In the case of hem measurement, more space was needed than actual body size but less space was needed than in woven patterns.

Development of Bodice Block Reflects Brassiere Cup Size (브래지어 컵 사이즈를 반영한 바디스 원형 개발)

  • Kim, Yeo Sook
    • The Korean Journal of Community Living Science
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    • v.28 no.1
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    • pp.69-79
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    • 2017
  • The purpose of this study was to compare fitting of the upper garment by brassiere cup size and types of bodice block. This study conducted a 3D virtual garment system by applying three types of bodice block (I, II, III) and experimental pattern of the bodice block to 3D avatars of four individuals with the following measurements: under bust circumference of 73.5 cm and bust circumferences of 83.5 cm, 86.0 cm, 88.5 cm, and 91.0cm. The results of the study were as follows. First, for 83.5 cm bust circumference (A Cup), appearance of the three types of bodice block (I, II, III) was appropriate. However, as bust circumference increased in size, shape became inappropriate. The depth and width of the armhole, within 15 cm and 11 cm, respectively, were found to be appropriate. In case of 91.0 cm bust circumference (D Cup), all three bodices (I, II, III) were inappropriate. Second, the results of the draft of the experimental patterns of the bodice block of bust circumference measuring 83.5 cm, 86.0 cm, 88.5 cm, and 91.0 cm in the 3D avatars of the four individuals revealed similarities in the frontal view of the silhouette in the four avatars; in the case of the lateral view of the silhouette, lateral width grew wider as bust circumference of the silhouette became larger, but the shape of armhole showed no changes. The depth of the armhole showed little changes from 15.1 cm to 15.22 cm, and the height of sleeve (armscye depth 13.6 cm within +2 cm) remained similar. The difference in width of the armhole from 11.26 cm to 11.37 cm was rather small. The width of the upper sleeve (8.97 cm) seemed to be appropriate as it remained within the 2-3 cm boundary.

Design and Implementation of a Cloth Simulation System based on Hierarchical Space Subdivision Method (계층적 공간 분할 방법을 이용한 의복 시뮬레이션 시스템의 설계 및 구현)

  • Kim Ju-Ri;Cho Jin-Ei;Joung Suck-Tae;Lee Yong-Ju;Jung Sung-Tae
    • Journal of the Korea Society of Computer and Information
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    • v.9 no.4
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    • pp.109-116
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    • 2004
  • This paper describes a cloth simulation system for dressing 3D virtual human model with different pieces of clothing. The garments are constructed of cutting patterns seamed together. The system reads a body file and a cutting pattern file and produces a new model dressed with the specified garment by using a physical simulation based on a mass-spring model. For the realistic cloth simulation, it performs collision detection and response between triangles of the 3D human model and the garment. Because the number of triangles of a human model is very large. the collision detection and response requires a lot of time. To overcome this problem, we propose a pruning method which decreases the number of collision detection and response by a space-subdivision method. Experimental results show that the system produces realistic images and makes it possible to sew a garment around a virtual human body in several seconds.

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