• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
• /
• pp.752-757
• /
• 1991

Recently, human body modeling with muscle deformation has become an attractive research area in computer animation. There are many modeling tools available for solids such as mechanical part. However, there are many limitations of these conventional methods in modeling flexible objects with delicate motions and shapes such as human bodies. In this paper we present a new modeling technique for human body with muscle deformation. Each muscle is represented as a generalized cylinder and its shape deformation is computed using simple algorithm. The human body is a union of muscles, bones, organs, etc. The modeling data are obtained from the information on the human anatomy. To demonstrate the feasibility of our method, we model several arm muscles and simulate the skin deformation. As a result we have obtained a realistic shape deformation.

• 한국공작기계학회:학술대회논문집
• /
• 한국공작기계학회 2003년도 추계학술대회
• /
• pp.401-411
• /
• 2003

Tube expanding process is for combining a heat-sink plate with hair-pins (Cu-tube) through plastic deformation. The two parts, i. e. , heat-sink plate and hair-pins are they components of a heat-exchanger for an air conditioner. This paper presents the analysis and dynamic modeling of a high-speed tube expander which integrates transfer of parts, fixing of parts, and tube expanding into one process. The 3-dimensional modeling of all the parts for the tube-expander was constructed using CATIA$\circledR$. then the CATIA$\circledR$ models are transferred into visuaINastran$\circledR$ to execute the 3-dimensional animation for checking prescribed cycle-time. The technique presented in this paper has been shown to be effective as a priori tool for verifying the design of a high-speed tube expander.

• 한국멀티미디어학회논문지
• /
• 제20권7호
• /
• pp.1129-1135
• /
• 2017

Due to the development of the media, the digital image is gradually developed, giving some motion to the still image called Cinemagraphs, thereby enhancing the visual perceptional ventilation. In today's advertising media, visual stimuli are transmitted through Cinemagraphs. Demonstrate what is conveyed by aesthetics through case studies and experimental studies. In addition, through Cinemagraphs, the possibility of aesthetic technique is confirmed, and the features of Cinemagraphs will become a new trend in the field of design studying digital images. As IT technology becomes increasingly sophisticated and easy to make, it is expressed as a cultural symbolic pleasure of the masses. The value of future research will be significant.

• 한국멀티미디어학회논문지
• /
• 제9권11호
• /
• pp.1515-1528
• /
• 2006

물리기반 유체 애니메이션 시스템들이 시각 특수효과 산업계에서 빠르게 발전하고 있고, 이를 이용해 매우 높은 화질의 영상을 제작하는 것이 가능하게 되었다. 그러나 컴퓨터 게임과 같은 실시간 응용 분야의 경우, 화질보다는 시뮬레이션 속도가 더 중요한 문제이다. 본 논문은 프로그래머블 그래픽스 파이프라인을 이용하여 유체에 대한 애니메이션을 수행하는 실시간 기법에 대해 설명한다. 두 개의 키-프레임이 주어졌을 때, 본 기법을 이용하여 원시 프레임으로부터 목적 프레임으로 변하는 연속 영상을 대화식으로 생성할 수 있음을 보인다.

• 한국의상디자인학회지
• /
• 제7권3호
• /
• pp.7-15
• /
• 2005

Culture industry is appearing as an important sector of economy. Many kinds of culture industry like movie, music, drama, animation and game are creating enormous wealth all over the world. Fashion is a kind of culture industry too and even sometimes treated as art. Korean fashion is not treated as real culture but still as a part of textile industry. Internationally Korean fashion has not yet much to show, and despite of it's potential it does not attract much interest from other countries. In this paper properties and effects of mulberry handmade paper clothes were investigated with five clothes made of it. In making handmade mulberry paper clothes various techniques could be applied and these techniques could bring new effects. Because mulberry handmade paper does not have little flexibility than ordinary texture, much efforts should be put to the detail works. Handmade mulberry paper clothes have enormous potential as art, because various approach could be applied.

• 한국정밀공학회지
• /
• 제16권4호통권97호
• /
• pp.102-109
• /
• 1999

Reverse engineering is a technique that helps designers to quickly generate computer interpretable data from existing physical objects. It can be used for generating CAD data from a mechanical part of high precision, or generating computer animation characters from physical mock-ups. We developed a low precision reverse engineering system that is composed of surface/solid generation software and a contact type commercial 3D digitizer. A unique point sampling procedure has been devised to easily form solid topology from the sampled data. It was also shown that STL data for rapid prototyping was successfully generated from the solid.

• 한국소음진동공학회논문집
• /
• 제16권4호
• /
• pp.355-365
• /
• 2006

The coupled time-integration method with a staggered algorithm based on computational structural dynamics (CSD), finite element method (FEM) and computational fluid dynamics (CFD) has been developed in order to demonstrate physical vibration phenomena due to dynamic aeroelastic excitations. Virtual flutter tests for the spanwise curved ing model have been effectively conducted using the present advanced computational method with high speed parallel processing technique. In addition, the present system can simultaneously give a recorded data file to generate virtual animation for the flutter safety test. The results for virtual flutter test are compared with the experimental data of wind tunnel test. It is shown from the results that the effect of spanwise curvature have a tendency to decrease the flutter dynamic pressure for the same flight condition.

• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2002년도 가을 학술발표회 논문집
• /
• pp.62-69
• /
• 2002

With the development of CUP speed and graphic technology, real-time simulation of deformable object is embossed as an essential issue in engineering field. Recently, it has been applied to the surgical training and game animation with haptic force feedback. But real time simulation of deformable objects is not easy because of the conflicting demands of speed and low latency and physical accuracy. In this study, we present the implementation of boundary element method(BEM) which is combined with the nonuniform B-spline surface. It is working together with the real-time simulation technique and the geometry data is altered by handling control points without preprocessing routine.

• International Journal of CAD/CAM
• /
• 제1권1호
• /
• pp.23-32
• /
• 2002

In this paper, a new technique of space deformation for parametric surfaces with so-called extension function (EF) is presented. Firstly, a special extension function is introduced. Then an operator matrix is constructed on the basis of EF. Finally the deformation of a surface is achieved through multiplying the equation of the surface by an operator matrix or adding the multiplication of some vector and the operator matrix to the equation. Interactively modifying control parameters, ideal deformation effect can be got. The implementation shows that the method is simple, intuitive and easy to control. It can be used in such fields as geometric modeling and computer animation.

• 한국컴퓨터정보학회:학술대회논문집
• /
• 한국컴퓨터정보학회 2016년도 제53차 동계학술대회논문집 24권1호
• /
• pp.227-228
• /
• 2016

본 연구에서는 게임 배경과 게임 캐릭터의 효과에 대해서 나타낸다. 먼저 3개의 캐릭터 이미지를 주 캐릭터 로 만들 이미지에 합성기법을 적용하여 캐릭터들을 합성한다. 합성하여 만든 캐릭터와 다른 캐릭터의 모양과 형태에 맞게 알맞은 배경 색상으로 만들고, 각 캐릭터의 크기, 원근, 모양, 색상에 따라 효과를 적용한다. 따라서 게임 콘텐츠를 제작하는데 정지 영상으로 표현하여 캐릭터 애니메이션과 장면에 맞는 사운드를 삽입하여 게임 콘텐츠로서 시각과 청각과 움직임이 있는 게임 캐릭터를 제작한다. 특히 배경색, 캐릭터의 번개 및 라이팅 효과색상 같은 것에 관심을 갖고 제작하여 앞으로 게임 콘텐츠의 배경과 캐릭터 효과를 제작하는데 모션그래픽을 이용하여 간단하게 제작 할 수 있음을 나타내었다.