• Title/Summary/Keyword: 3D human simulation

Search Result 213, Processing Time 0.025 seconds

Measurements of 3D Model Shapes for Reverse Designs (역설계를 위한 3차원 모델형상 측정)

  • Doh, Deog-Hee;Cho, Kyeong-Rae;Cho, Yong-Beom
    • Journal of the Korean Society of Visualization
    • /
    • v.10 no.1
    • /
    • pp.55-59
    • /
    • 2012
  • Reverse Design(RD) plays an important role in simulation engineering, such as CFD (Computational Fluid Dynamics) and Virtual Engineering and Design. RD becomes much more valuable when there is no shape data of the practical models for CFD grid generations. In this study, two-camera based rapid prototyping(RP) system is proposed. 3D-PTV based measurement algorithm was adopted. The developed system was applied to reconstruct three-dimensional data of a human face, a motorcycle model, a cylindrical body and a triangular pyramid.

A study of leggings patterns using a 3D virtual simulation program - Focused on the women in 30's - (3D 버츄얼 시뮬레이션을 이용한 레깅스 패턴 연구 - 30대 여성을 중심으로 -)

  • Shin, JiA
    • Journal of the Korea Fashion and Costume Design Association
    • /
    • v.25 no.4
    • /
    • pp.93-106
    • /
    • 2023
  • The study is to develop and present a leggings pattern that is suitable for the human body by using a standard body type avatar for a female in her 30s. As a research method, the average body type was selected from adult women in their 30s, and the appearance was evaluated using the CLO software program. The data analysis of this study compared the dimensions and shape of each part by legging. The leggings pattern suggested based on the above research results was determine to be a total length of 80.6cm and hip length of 24cm, and the knee length was set by dividing the legging in half from the waist to the hem and then adding 5cm. These figures were evaluated higher than Company D in terms of the adequacy of the upper part of the front and rear plates of Company A as well as the adequacy of the knee lines. Company A's figures were applied and corrected. For the front plate, the waist circumference was divided by 4, and 3.5cm was removed, and the hip circumference was set by dividing the hip circumference by 4, and 3.8cm was removed. In the appearance evaluation results Company D was highly evaluated in the suitability evaluation of the waist and hips, and the waist and hips were set using the pattern of Company D. The length of the front panel was modified by dividing the hip circumference by 4 and adding 1.8cm to the length, and the length of the back panel was modified by dividing the hip circumference by 3 and adding 8cm after dividing the hip circumference by 0.8cm.

Design of a Dual-Band On-Body Antenna for a Wireless Medical Repeater System (의료용 무선 중계 시스템용 이중 대역 인체 부착형 안테나 설계)

  • Kwon, Kyeol;Tak, Jinpil;Choi, Jaehoon
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.24 no.3
    • /
    • pp.239-246
    • /
    • 2013
  • In this paper, a dual-band on-body antenna operating at MICS and ISM band for a wireless medical repeater system is proposed and the antenna performance including the human body effect is investigated. The designed dual-band antenna is comprised of a top patch for ISM band and bottom patch for MICS band. Simulation and measurement was carried out in order to analyze the effects of human body on antenna performance considering real use. The proposed antenna has required impedance bandwidth enough to cover both MICS and ISM bands. The measured peak gains were -12.47 dBi and 1.71 dBi at the each center frequency of MICS and ISM bands, respectively. Furthermore, the antenna has the maximum radiation directed toward the inside of the human body in the MICS band and directed toward the outside in the ISM band. In addition, the return loss property of the antenna is insensitive to human body effects so that the proposed antenna is well suited for the on-body wireless medical repeater system.

A Study on a technology of extraction of motion objects (3차원 동작객체 추출기술에 관한 연구)

  • 오영진;박노국
    • Journal of Korea Society of Industrial Information Systems
    • /
    • v.4 no.3
    • /
    • pp.21-27
    • /
    • 1999
  • This paper introduces the research and development of automatic generation technology to develop the character agent. The R&D of this technology includes three major elements-body model generation, automatic motion generation and synthetic human generation. Main areas of application would by cyber space- 3D game, animation, virtual shopping, on line chatting, virtual education system, simulation and security system.

  • PDF

A Simulation System of Total Knee Replacement Surgery for Extracting 3D Surgical Parameters (슬관절 전치환술용 3차원 시술변수 추출 시스템)

  • Jun, Yong-Tae
    • Korean Journal of Computational Design and Engineering
    • /
    • v.16 no.5
    • /
    • pp.315-322
    • /
    • 2011
  • The goal of total knee replacement (TKR) surgery is to replace patient's knee joint with artificial implants in order to restore normal knee joint functions. Since mismatched knee implants often cause a critical balancing problem and short durability, designing a well-fitted implant to a patient's knee joint is essential to improve surgical outcomes. We developed a software system that three-dimensionally (3D) simulates TKR surgery based upon 3D knee models reconstructed from computed tomography (CT) imaging. The main task of the system was to extract precise 3D anatomical parameters of a patient's knee that were directly used to determine a custom fit implant and to virtually perform TKR surgery. The virtual surgery was simulated by amputating a 3D knee model and positioning the determined implant components on the amputated knee. The test result shows that it is applicable to derive surgical parameters, determine individualized implant components, rehearse the whole surgical procedure, and train medical staff or students for actual TKR surgery. The feasibility and verification of the proposed system is described with examples.

A Survey on the Purchasing Behavior and Preference of Mountain Climbing Pants for the Development of Women's Functional Mountain Climbing Pants Patterns (여성용 기능성 등산용 팬츠 패턴 개발을 위한 등산용 팬츠의 구매 및 선호도 조사 연구)

  • Suh, Chuyeon
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.37 no.1
    • /
    • pp.90-100
    • /
    • 2013
  • This study uses a survey questionnaire to identify the major customer age class of adult women who frequently mountain climb as well as analyze their purchasing behavior and preference of mountain climbing pants. The field survey, classified the types of mountain climbing pants, selected the types of mountain climbing pants that consumers preferred, and then analyzed the degrees of satisfaction for mountain climbing pants based on an evaluation of wearing. Specifically, the patterns of mountain climbing pants preferred by national brands and licensed brands were compared and analyzed. The validities of commercially available mountain climbing pants were analyzed through an evaluation of wearing comfort and an evaluation of wearing on a 3D simulation of the human body. The basic data for the development of mountain climbing pants are presented based on the results. The survey questionnaire results indicate that the major class of women consumers of mountain climbing goods was in the 40s to 50s; in addition, the types they most wore were straight type and functional cut type. The preferred brand was KOLONSPORT (which occupies a 21.2% market share), followed by THE NORTH FACE (13.0%), K2 (11.5%) and Kolping (10.0%). The main reason (26.8% of responses) that they preferred these brands was functionality. The difference in measurement of climbing pants patterns could be analyzed accurately in the pattern analysis, the wearing evaluation by the self-sonsory test and evaluation of wearing comfort through 3D simulation. The results of ANOVA on motions and items indicates that no significant difference was found among motions; however, a significant difference was recognized among items. A comparison of straight type and functional cut type showed that the functional cut type excelled slightly in wearing comfort.

Power Management System Simulator Modeling and Characteristics Analysis for Electric Propulsion Ship (LNGC용 Power Management System 시뮬레이터 모델링 및 특성분석)

  • Kim, Youngmin;Jeon, Kyung-Won;Jung, Sang-Yong
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.64 no.6
    • /
    • pp.878-884
    • /
    • 2015
  • In this paper, Power Management System(PMS) simulator for Liquid Nature Gas Carrier(LNGC) is developed. Major components of power system for LNGC, such as generator, diesel engine and governor, transformer, circuit breaker, and 3 phase loads models are built based on MATLAB/SIMULINK. With these designed major parts, PMS simulator modeling is carried out. Based on MATLAB/Graphical User Interface, PMS simulator control for LNGC, and Human Machine Interface for monitoring is designed. PMS simulator for LNGC carries out simulation according to sequence of characteristics analysis. By comparing results of predicted simulation for each sequence to that of characteristics analysis, the reliability of PMS simulator for LNGC will be verified.

A Facial Animation System Using 3D Scanned Data (3D 스캔 데이터를 이용한 얼굴 애니메이션 시스템)

  • Gu, Bon-Gwan;Jung, Chul-Hee;Lee, Jae-Yun;Cho, Sun-Young;Lee, Myeong-Won
    • The KIPS Transactions:PartA
    • /
    • v.17A no.6
    • /
    • pp.281-288
    • /
    • 2010
  • In this paper, we describe the development of a system for generating a 3-dimensional human face using 3D scanned facial data and photo images, and morphing animation. The system comprises a facial feature input tool, a 3-dimensional texture mapping interface, and a 3-dimensional facial morphing interface. The facial feature input tool supports texture mapping and morphing animation - facial morphing areas between two facial models are defined by inputting facial feature points interactively. The texture mapping is done first by means of three photo images - a front and two side images - of a face model. The morphing interface allows for the generation of a morphing animation between corresponding areas of two facial models after texture mapping. This system allows users to interactively generate morphing animations between two facial models, without programming, using 3D scanned facial data and photo images.

Emotion Recognition by Hidden Markov Model at Driving Simulation (자동차 운행 시뮬레이션에서 Hidden Markov Model을 이용한 운전자 감성인식)

  • Park H.H.;Song S.H.;Ji Y.K.;Huh K.S.;Cho D.I.;Park J.H.
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2005.06a
    • /
    • pp.1958-1962
    • /
    • 2005
  • A driver's emotion is a very important factor of safe driving. This paper classified a driver's emotion into 3 major emotions, can be occur when driving a car: Surprise, Joy, Tired. And It evaluated the classifier using Hidden Markov Models, which have observation sequence as bio-signals. It used the 2-D emotional plane to classfiy a human's general emotion state. The 2-D emotional plane has 2 axes of pleasure-displeasure and arsual-relaxztion. The used bio-signals are Galvanic Skin Response(GSR) and Heart Rate Variability(HRV), which are easy to acquire and reliable. We classified several moving pictures into 3 major emotions to evaluate our HMM system. As a result of driving simulations for each emotional situations, we can get recognition rates of 67% for surprise, 58% for joy and 52% for tired.

  • PDF

A Comparison of System Performances Between Rectangular and Polar Exponential Grid Imaging System (POLAR EXPONENTIAL GRID와 장방형격자 영상시스템의 영상분해도 및 영상처리능력 비교)

  • Jae Kwon Eem
    • Journal of the Korean Institute of Telematics and Electronics B
    • /
    • v.31B no.2
    • /
    • pp.69-79
    • /
    • 1994
  • The conventional machine vision system which has uniform rectangular grid requires tremendous amount of computation for processing and analysing an image especially in 2-D image transfermations such as scaling, rotation and 3-D reconvery problem typical in robot application environment. In this study, the imaging system with nonuiformly distributed image sensors simulating human visual system, referred to as Ploar Exponential Grid(PEG), is compared with the existing conventional uniform rectangular grid system in terms of image resolution and computational complexity. By mimicking the geometric structure of the PEG sensor cell, we obtained PEG-like images using computer simulation. With the images obtained from the simulation, image resolution of the two systems are compared and some basic image processing tasks such as image scaling and rotation are implemented based on the PEG sensor system to examine its performance. Furthermore Fourier transform of PEG image is described and implemented in image analysis point of view. Also, the range and heading-angle measurement errors usually encountered in 3-D coordinates recovery with stereo camera system are claculated based on the PEG sensor system and compared with those obtained from the uniform rectangular grid system. In fact, the PEC imaging system not only reduces the computational requirements but also has scale and rotational invariance property in Fourier spectrum. Hence the PEG system has more suitable image coordinate system for image scaling, rotation, and image recognition problem. The range and heading-angle measurement errors with PEG system are less than those of uniform rectangular rectangular grid system in practical measurement range.

  • PDF