• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.429-433
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• 2004

In games and films, the most highlighted fields in entertainment industry, those special effects such as flame, explosion, smoke, liquid, snow, rain and dust are generated through the particle system. Special effects can be expressed realistically by the particle system API that is a graphic library of high level in game and virtual reality. When developers apply the particle system API in applications, they must exchange parameters repeatedly and compile source codes until special efforts that they want are expressed, and It takes much time until the minute control that have relations between each parameters. This paper develops a particle system API usable in on-line game and real-time virtual reality and presents particle system editor that can see and create special effect easily through attributes adjustment such as position, velocity, color, transparency, size, age, the secondary position, the second velocity etc.

• Electronics and Telecommunications Trends
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• v.27 no.3
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• pp.1-11
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• 2012

아바타(avatar)는 온라인 게임이나 채팅, 가상 공간 등에서 사용자의 역할을 대신하는 애니메이션 캐릭터를 뜻하는 말로 1990년대 인터넷 보급과 더불어 활발히 도입되기 시작하였으며 2000년대에 실제 사람의 사실성보다는 3D 그래픽 캐릭터의 관점에서 세컨드라이프(Second Life)나 리니지 등의 서비스에서 활용되었다. 또한 컴퓨터 그래픽스 기술의 발달로 인해 보다 사실적인 인체 표현이 가능한 아바타 기술이 영화나 CF를 중심으로 활발히 활용이 되었다. 최근 컴퓨터 그래픽 기술과 컴퓨터 비전 기술의 결합으로 인한 시너지 효과 및 센서 기술과 컴퓨팅 하드웨어의 발전으로 인해 실제 사용자의 외형이나 움직임을 사실적으로 표현할 수 있는 실사 인체 아바타에 대한 연구와 산업으로의 응용이 활발히 진행되고 있다. 본고에서는 이러한 실사 인체 아바타의 생성 기술과 아바타를 응용한 활용 기술에 대해 살펴보고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10b
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• pp.262-264
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• 2001

1자유도 회전운동(Rolling-Motion)을 재현할 수 있는 운동의자와 실시간 3차원 가상현실 기반의 시뮬레이터를 개발하여 그래픽과 운동의 통합을 연구하였다. 영상은 실시간 3차원 가상환경을 재생하며, 운동의자는 여기에 동기한다. 영상의 가시화는 Head-Mounted Display와 3자유도 트랙커(Tracker)를 이용해 이루어지며, 조이스틱(Joystick)을 이용해 가상환경 내에서 네비게이션한다. 1자유도 운동의자를 통해 탑승자는 항공기 동역학 모델에 기반한 정면 회전(Roll) 운동을 체감할 수 있으며, 제한된 공간 내에서 체감을 최대화하기 위해 워시아웃 필터(Washout Filter)가 응용되었다. 제작된 시뮬레이터는 일반 아케이드 시뮬레이터 게임의 프로토타입을 제공하며 탑승감 연구 등에 쓰일 수 있다.

• Journal of Korea Game Society
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• v.6 no.4
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• pp.47-53
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• 2006

In the game development differently with general software development, game planers, programers, and graphic designers, the specialists of the various fields, accomplished one team and they are advanced all to their goal. So it is very difficult for the development participants to communicate each other accurately and efficiently. For successful game development, all development participants should understand accurately the contents of the game design document. Specially the game mechanics as a major part of game design, requires the no-error contents, the no-error expression, and the no-error readings to all development participants because it contains almost game-play logic. It becomes more difficult for the development participants to understand accurately the game mechanics which becomes larger and complicated as the size of game development becomes larger. And configuration management of the game mechanics becomes more complicated and inefficient. In this paper, we propose a new representation method of game mechanics using UML notations for solving this problem. The proposed method satisfies the visual expression and the logical expression simultaneous for the requirements of the game mechanics because of UML notations. And the proposed method could be an efficient management of configuration because the management is based on the UML model management. The proposed representation of game mechanics of "Capture The Dude" game, shows good visual expression and good logical expression.

• Journal of Korea Game Society
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• v.12 no.6
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• pp.33-46
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• 2012

This research aimed to analyze the way of how flying movement system and background graphic in MMORPG, which provides movement system, influences on users' psychological behavior in order to enhance user's participation and the completion level of 3D game. This research also analyzed the difference between the user's response to the flying movement and other movement structure in game such as things to board, summons, portal, chase, and etc. With this comparative analysis, this study could clarify the characteristics of the user's desire to fly according to the virtual world' topography in game, the necessity of flying movement for fast movement, the dependence of user on flying system, the immersion according to behavior in process of flying, and expression level of virtual world, and etc. The survey through the case research of MMORPG Aion selected for this research showed flying movement system can have suitable quality by applying users' playing time and absorption in flight process, users' impulse following game level, and users' need to fly as a convenience of flying properly.

• Journal of the Korea Society of Computer and Information
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• v.16 no.1
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• pp.163-173
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• 2011

In this paper, we propose a new paradigm of augmented reality board game environment and a portable game assistant(PGA) which can help gamers with strategy information. Previous AR board games consist of a private and public space. The public space provides rules of the game and shows the scene of game. And the gamers control game pieces in the public space. The previous games use the RFIDs for recognizing positions of the pieces, and the VR/AR environment for providing the scene of the game. However the RFIDs are expansive, and the VR/AR environment is inconvenient because it uses additional devices: the DataGlove, the digital pen, and the HMD. The proposed system recognizes positions of real pieces using the computer vision technique, and uses a monitor to provide dynamic effects. In the private space, previous systems provide entire screen of game and position of specific pieces, but cannot be controled the pieces by gamers. Therefore, in this system, we provide PGA that helps the user to plan of the strategy individually using universally mobile. The PGA helps to plan the strategy in the individual area, and to play easily in the side of the user's convenience.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.257-263
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• 2006

Nowadays, 3-D(Three-dimensions) is used in various field such as Games, Movies, Animations etc. Especially the Role of 3-D computer graphic is being generalized by turnover of Screen from '2-dimensional' to '3-dimensional'. There are not enough data about 'Motion Capture' even though it plays main function in 3-dimensional movement. 'Motion Capture' could be also unfamiliar for people. And as a matter of fact, the use of this equipment is limited due to its high cost. Therefore, I studied the outline of Digital Motion Capture system and its application to 3-D game Character Animation. And I checked the movement of 3-D Character after transplanting the Motion Data to the 3-D Character. I acquired Motion Data by Optical Motion Capture Equipment which we possess and transplanted it into the 3-D Character then Implemented it as walking, running and hitting which are the basic motions of Expression.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.271-284
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• 2020

Good reviews that Half-Life: Alyx received created a turning point for the vitalization of the VR market with an uncertain future due to the absence of a revenue model together with the increased sales of VR equipment. Based on previous studies, this study categorized the characteristics of VR games according to graphs, first-person system, interface, controller, interaction technology, sound and stories. The analysis results show that the seven elements corresponded with "interactions" and "virtual images," which represent the completion level of games as part of VR components, and were connected to one another, which led to the proposal of an upper-rank concept "presence" to put them together. "Immersiveness," which represents users' emotions as part of VR components, was analyzed with the immersion theory to assign tasks of proper difficulty level for users' abilities. In the research process, the Delphi technique and FGI were administered to a panel of 15 experts to ensure objectivity. Finally, "presence" and "immersiveness" are characteristics in proportion to each other and can be valid concepts in future analysis of VR games as well as Half-Life: Alyx, which led to the proposal a new concept framework called 'presence effects' by combining the two words.

• Journal of Korea Game Society
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• v.16 no.4
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• pp.69-78
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• 2016

With the development of game technology, the realistic game graphics, interface technology, and various content services with immersion are being required in the content area. NUI has been developed through CLI and GUI. Unlike the conventional methods, it is an interface that could be the intuitive and realistic interface for human as a natural action realized. we propose a boxing simulation game using leap motion of it. Providing a realistic 3D experimental environment through VR headsets game, we also propose a method that can be calculated the scores if the user-controlled interface (fist) could be to punch the target (sandbag) of the internal in accordance with changes of the angle of target impact with the physical characteristics.

• Information and Communications Magazine
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• v.31 no.7
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• pp.32-38
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• 2014

소프트웨어-콘텐츠 산업은 IT 및 전통산업에서도 대표적인 지식산업이면서 타 산업에 대한 연관관계가 매우 높고 파급효과도 대단히 높은 산업으로 고부가가치를 실현할 수 있는 산업이다. 한국통신기술협회(TTA) 소프트웨어-콘텐츠 기술위원회(TC6)는 기반 소프트웨어 기술(공개SW, 메타데이터, 소프트웨어 품질평가, 웹서비스 등)과 융합 소프트웨어 기술(임베디드SW, 사이버-물리시스템(CPS), e-내비게이션, e-퍼블리싱 등), 그리고 디지털 콘텐츠 기술(게임, 디지털시네마, 컴퓨터그래픽 등) 분야의 표준 제정을 담당하고 있다. 본고에서는 TC6 산하 9개의 PG에서 2013년에서 현재까지 제정한 70여건의 표준에 대하여 간략하게 정리하여 제시함으로써, 향후 소프트웨어-콘텐츠 분야의 표준이 참조될 수 있는 기회가 있기를 희망하며 표준화 추진 동향에 대하여 소개 하고자 한다.