• Journal of Korean Port Research
• /
• v.13 no.1
• /
• pp.155-166
• /
• 1999

The construction of the coastal structures and reclamation work causes the circulation reduced in the semi-closed inner water area and the unbalanced sediment budget of beach results in an alteration of beach topography. Among the various fluid motions in the nearshore zone water particle motion due to wave and wave-induced currents are the most responsible for sediment movement. Therefore it is needed to predict the effect of the environmental change because of development and so the prediction of wave transformation dose. The purpose of this study is to introduce the relation between waves wave-induced currents and sediment movement. In this study we will show numerical method using energy conservation equation involving reflection diffraction and reflection and the surfzone energy dissipation term due to wave breaking is included in the basic equation. For the wave-induced current the momentum equation was combined with radiation stresses lateral mixing and friction Various information is required in the prediction of wave-induced current depending on the prediction tool. We can predict changes in wave-induced current from the distribution of wave especially near the wave breaking zone. To evaluate these quantities we have to know the local condition of waves mean sea level and so on. The results from the wave field and wave-induced current field deformation models are used as input data of the sediment transport and bottom change model. Numerical model were established by a finite difference method then were applied to the development plan of the eastern Pusan coastal zone Yeonhwa-ri and Daebyun fishing port. We represented the result with 2-D graphics and made comparison between before and after development.

• Cartoon and Animation Studies
• /
• s.24
• /
• pp.135-154
• /
• 2011

Simulacra theory as propounded by Jean Baudrillard in his seminal treatise, "Simulacra and Simulation," explores the significance of images, media and art in contemporary culture. Its central theoretical premise is the simulacrum, a sign or symbol that plays a crucial role in constructing perceived reality but which lacks a real-world referent. In Michel Gondry creates simulacra in the form of hallucinatory dream imagery by combining stop-motion animation and live-action elements. As experimental film-making that combines analog and minimum digital technologies, the result is a tour-de-force of synchronization. This study analyzes the film's technique and expressive content and, by adopting simulacra theory as a conceptual framework, aims to provide a better understanding of Gondry's work.

• Cartoon and Animation Studies
• /
• s.10
• /
• pp.121-135
• /
• 2006

At present, it is very common to use techniques beyond the 2D (two-dimensional) in animations which are found in motion pictures, OVA and TV series. As you can see, PIXAR and Disney have reduced their 2D departments and recently put more effort into 3D (three-dimensional) animation. There is no doubt that producing 3D animation is the big trend. Along with this trend, the national education institutions and the national support policies are also changing to be supportive of 3D animations. We, however, should ask ourselves, if we are on the right track with this change. Through the analysis of the methods of creating 2D animation which we should keep as it is, but instead we import and incorporate with 3D techniques of Japanese 2D animation, I would like to present the importance and the significance of the 2D animation and also to suggest an effective way to create 2D fused with 3D computer graphics techniques.

• Journal of Digital Convergence
• /
• v.16 no.6
• /
• pp.197-204
• /
• 2018

The realistic Visual Effects using fluid simulation in 3D computer graphics are operated as important factors to improve the quality of images. The process of creating realistic motions of water, fire, explosion by controlling each property of fluid is called fluid simulation. In general, the creation of a fluid simulation concentrates on the main simulation work phase, however an effective method for initial set up is important for the main simulation work. The purpose of this study is to analyze the factors involved in the initial emission motion and shape of fluid and propose methods that can efficiently apply this into the initial set up. For the process of the research, first, problems are raised based on related researches, and second, two experiments, 'Dynamic Fluid Emitter Creation' and 'User Design Type Emission Velocity Solution', are conducted for more effective fluid simulation. Through this research, the effective fluid simulation of initial set up phase will be suggested through the user design-type emission control solutions.

• Journal of the Korean Institute of Telematics and Electronics
• /
• v.25 no.10
• /
• pp.1173-1182
• /
• 1988

The stability, energetic efficiency and walking volume are affected by the geometric structure of legs of a walking robot. A quadruped walking robot is considered to have large stability margin among the walking robots and pantograph leg permits large walk stroke and mutually independent vertical and horizontal movements, but the kinematic characteristics are difficult to analyze. Graphical method may be useful to characterize three dimensional legged motion of the pantograph mechanism. We present the modelling method for three different quadruped robots with pantograph legs that have different joints mechanism. The modeled robots are animated by a path that is planned with respect to the center of body. In particular, graphical animation incorporates leg control to rotation and side walking and uses the window of Sun-3 system for displaying joint information.

• Journal of Broadcast Engineering
• /
• v.25 no.4
• /
• pp.507-517
• /
• 2020

Along with the development of computer graphics, real-time rendering, motion capture, and artificial intelligence technology, virtual being that enables two-way communication has emerged in the content industry. Although the commercialization of technologies and platforms is creating a two-way communication virtual being, there is a lack of analysis of what characteristics this virtual being has and how it can be used in each field. Therefore, through technical background survey and case study for the production of virtual being, the two-way communication virtual being is analyzed on the characteristics necessary for emotional exchange. The characteristics needed for emotional exchange were divided into interaction, individuality, and autonomy, and this characteristic is classified as the focus and how two-way communication virtual being will be used in the content field. This study is expected to provide significant implications for the research of content production and utilization using virtual being as a basic study of virtual being, which analyzes the technical background and characteristics for two-way communication required for virtual being production.

• Archives of design research
• /
• v.14 no.3
• /
• pp.49-58
• /
• 2001

The communication designer in the multimedia age should have a consideration that the sound also can be an important expression element to transmit ones thought as well as the visual sense like color, shape and motion. As you already know, someones thought can be better understood when transmitted to others using the visual and auditory senses together than using the visual or auditory sense alone. The meeting of sight and hearing bases on the synesthesia. For example, low sound reminds a person of dark color and high sound usually reminds light color. And a percussion instrument reminds a person a circle and melody reminds a line. The visual and auditory senses In communication of the multimedia age should act as an independent expression element gotten out of the synchronizing that just serves simple sight and related sound at the same time. Interaction between sight and hearing arose a different emotion that cannot be happened just by one element alone. So, the programs of communication design education in this multimedia age should fulfill the requirement that it can develop ones expression ability through the understanding of interaction between sight and hearing. In this study, we suggest the education programs Classified into following categories; audio visual Gestaltung, audio visual moving graphics, audio visual design.

• Journal of Korea Game Society
• /
• v.16 no.3
• /
• pp.55-64
• /
• 2016

Recently, the game industry has been developed in a large scale, and online games and mobile games place significant weight on the game industry. This study demonstrated the results of their content production capability by age those who are randomly selected participants into three groups of elementary school, middle school, and university students to get game content production capability from them. To evaluate content production capability, a short-term training was conducted for elementary school and middle school students, and they produced contents with a little low level of completeness. University students had a long-term training several times more than that of elementary school and middle school students, and they produced contents with a higher level of completeness. This study employed evaluation methods with evaluation criteria of the same number of persons and items. Evaluation scores of 80.5 for elementary school students, 88.3 for middle school students, and 78.3 for university students were demonstrated on the basis of a maximum scale of 100 points. Thus, it is said that if a systemic professional training is performed for them to develop game potentiality from the stage of middle school students, it is possible to raise professional personnel for game content production at an early stage and highly contribute to Nation's Competitiveness.

• Journal of KIISE:Software and Applications
• /
• v.30 no.11
• /
• pp.1044-1053
• /
• 2003

A virtual science experience space(VSES) using virtual reality technology including haptic device is proposed to overcome limits which the existing science education has and to improve the effect of it. Four example scientific worlds such as Micro World, Friction World, Electromechanical World and Macro World are demonstrated by the developed VSES. Van der Waals forces in Micro World and Stick-Slip friction in Friction World, the principle of induction motor and power generator in Electromechanical World and Coriolis acceleration that is brought about by relative motion on the rotating coordinate are modeled mathematically based on physical principles. Emulation methods for haptic interface are suggested. The proposed VSES consists of haptic device, HMD or Crystal Eyes and a digital computer with stereoscopic graphics and GUI. The proposed system is believed to increase the realism and immersion for user.

• The KIPS Transactions:PartB
• /
• v.17B no.3
• /
• pp.183-188
• /
• 2010

A factorization-based 3D reconstruction system is realized to recover 3D scene from an image sequence. The image sequence is captured from uncalibrated perspective camera from several views. Many matched feature points over all images are obtained by feature tracking method. Then, these data are supplied to the 3D reconstruction module to obtain the projective reconstruction. Projective reconstruction is converted to Euclidean reconstruction by enforcing several metric constraints. After many triangular meshes are obtained, realistic reconstruction of 3D models are finished by texture mapping. The developed system is implemented in C++, and Qt library is used to implement the system user interface. OpenGL graphics library is used to realize the texture mapping routine and the model visualization program. Experimental results using synthetic and real image data are included to demonstrate the effectiveness of the developed system.