• The Journal of the Korea Contents Association
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• v.8 no.11
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• pp.49-56
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• 2008

Most games based on PCs or consoles at present show vivid special effects and brilliance sceneries. However, the other games running on mobiles and portable devices can not show magnificent scenes because of low hardware specifications such as slow CPU, old graphics card and battery capacity. These games relatively prefer light and casual contents that do not need tremendous calculation. It is very important to keep minimum of game graphics quality in those games. Thus this research presents the new possibility of variable indexed color palettes to overcome the low hardware capacities.

• Journal of Korea Game Society
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• v.7 no.2
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• pp.73-82
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• 2007

This study deals with how computer game affects spatial-temporal capability of game users. Focusing on college students, this study shows almost the same results as 'Mozart effect' by Gordon Shaw's previously famous study for music on spatial-temporal capability. Additionally, in comparison to music and animation, on-line racing game has more positive influence on a specific spatial-temporal capability.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.131-134
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• 2008

Most games based on PCs or consoles at present show vivid special effects and brilliance sceneries. However, the other games running on mobiles and portable devices can not show magnificent scenes because of low hardware specifications such as slow CPU, old graphics card and battery capacity. These games relatively prefer light and casual contents that do not need tremendous calculation. It is very important to keep minimum of game graphics quality in those games. Thus this research presents that the new possibility of variable indexed color palettes to overcome the low hardware capacities.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.903-906
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• 2018

본 논문에서는 동적 프로젝션 매핑 콘텐츠 저작 도구의 설계를 위해 동적 프로젝션 매핑의 유형과 그에 따른 인터렉션, 이펙트 효과, 그리고 적용되고 있는 객체 추적 방법을 분석하였다. 움직임이나 형태가 고정된 대상체에 영상을 투영하던 정적 프로젝션 매칭의 방법과는 다르게 최근 소개되고 있는 동적 프로젝션 매핑 콘텐츠들은 다양한 객체 추적 방법을 적용하여 프로젝션 매핑의 적용 대상 및 내용이 다양화되고 있다. 그러나 이에 따른 동적 프로젝션 매핑 콘텐츠 저작도구의 개발이 요구되고 있다. 이에 향우 저작도구의 설계를 위한 사전연구로 동적 프로젝션 매핑 콘텐츠의 특성을 분석하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.461-463
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• 2011

본 논문에서는 유아부터 노인까지 간단한 조작법으로 쉽게 즐길 수 있는 게임을 만들고자 한다. Space Bar를 주로 이용하는 One-Button방식의 게임으로 연타를 하는 미니게임들이지만 '순발력'과 '정확도'를 필요로 하는 게임이다. 다른 게임들은 화려한 이펙트와 다양한 조작법으로 흥미를 이끌어 내기는 하지만 저연령층과 고연령층이 다가서기엔 힘든 부분이 있다. 그래서 간단한 조작으로 게임을 즐길 수 있는 게임을 만들어 보고자 했다. 친근감 있는 시나리오와 캐릭터를 통해 남녀노소 누구나 쉽게 접할 수 있고, 오락적인 요소만 있는 것이 아니라 게임을 통한 성취감과 경쟁심을 유도함으로서 게임에 더욱 몰입 할 수 있다.

• Journal of Digital Convergence
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• v.14 no.11
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• pp.495-500
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• 2016

Since 2016, the VR market has been on the rapid growth. The most critical and arising issue in the VR market is VR contents. That is because it is necessary to develop making techniques and various VR contents to satisfy users' immersion and interaction as much as possible. Therefore, this study focused on VR image contents, conducted domestic and foreign cases of the components of visual and auditory inducement to keep and improve immersion, and thereby tried to find a right direction of visual and auditory inducement. As a result, the visual and auditory components of visual and auditory inducement were found to be photographing, edition, lighting, stitching, graphics, effect, voice actor's narration, dubbing, character voice, background sound, and sound effect; its technical and content components were found to be photographing technique, edition technique, lighting, stitching, graphics and effect, sound and sound effect, and theatric direction based on Mise-en-Scene, lines and narration of characters, and movements of characters and objets. For VR image contents, not only visual and auditory components, but technical and content components are necessary to improve immersion. In the future, it will be necessary to continue to research them.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.433-436
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• 2012

Today due to the development of technology, 3D graphics have become an essential element of the game graphic. When game companies create a game using 3D graphics, game users can enjoy a better game graphics like photo-realistic live action than 2D game graphics. And because the game companies have many advantages in creating games which are easy to deal with many basic effects and special effects, in video game business field, 3D game have become the mainstream. This paper will inquire the characteristics of 2D spline which is basic to various kinds of 3D modeling necessary to making 3D game graphics, compare and analyze the merits and demerits of each kind of spline and find out its development history.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.195-199
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• 2006

In the field of video design, motion graphics tends to be realized to deliver a certain message properly incorporating basic motion graphics components such as space, form of expression, and time, and has continued to be used as a powerful communication tool. Many cases proved that title sequences were produced as a result of combination of a variety of quick images and effects with appropriately chosen sounds to meet the demands of audience. This study indicated that motion graphics began to be widely used as a more powerful video communication tool for title sequences and also applied for M-NET, DMB, CABLE TV, IPTV, and others.

• The Journal of the Korea Contents Association
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• v.13 no.6
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• pp.55-66
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• 2013

In these days, small devices like smartphones, TV, and projectors are popular, and they are being developed rapidly. The projector is being used in cinema and exhibition because it makes a big screen. This feature makes new expression named projection-mapping in art world. Projection-mapping is being utilized extensively in stages of performances, and it use variety of shape's screens. But projection-mapping has limitation in space. So in this paper, we propose new performance system for projection-mapping and it make possible to overcome many difficulties. Also, we discuss the result of using the system in actual performance. We hope to develop the utilization of projection-mapping in performance.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.10
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• pp.1809-1815
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• 2010

This paper presents an improved method for high-resolution rotor position estimation in the permanent magnet synchronous motor (PMSM) drives with low-resolution Hall-effect sensors. The proposed method adopts a gain-scheduled full-order speed observer. Since the quantized position signal, which is obtained from Hall-effect sensors, is basically used as the input of the observer, the sixth-order harmonics are essentially included in the estimated position. To eliminate the harmonic components, the quantized position is linearized by a linear extrapolation based on the estimated average speed and futhermore the speed-depentent observer gain scheduling strategy is developed. The observer gain is also scheduled by considering the motor acceleration to improve the dynamic performance according to the changes of the motor speed and load. Several experiments are performed for 800W PMSM drive and the results demonstrate the effectiveness of the proposed method.