• 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.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.621-625
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• 2003

최근 유ㆍ무선 환경을 기반으로 하는 온라인 게임 및 메신저 서비스 등에서 아바타를 활용한 서비스가 증가하고 있으며 3D 아바타의 움직임을 표현하기 위한 3D 애니메이션에서는 사실적인 움직임을 표현하기 위해서 모션 캡쳐 데이터를 많이 사용하고 있다. 본 연구에서는 모션 캡쳐 데이터의 크기를 줄이기 위한 기법으로 모션 캡쳐 데이터를 움직임 특성에 대하여 분석하여 추출된 특징점을 이용하여 간략화하는 기법과 간략화된 모션 데이터를 본래의 데이터로 복원하는 기법을 제안한다.

• The Journal of the Korea Contents Association
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• v.8 no.7
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• pp.120-127
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• 2008

Practical use degree of Motion Capture technology is low in korea game market which did growth of MMORPG putting first. However, that is dance game or FPS, sports game genre is magnified. Therefore, practical use degree of Motion Capture technology is increasing. And, need various research to take advantage of Motion Capture technology effectively. Studied 3D game character animation manufacture pipe line for it. Characteristic of this manufacture pipe line is work classification, correction of two times, Biped format all-in-one to progress Motion Capture technology and keyframe-animation work at the same time. Also, manufacture pipe line that is consisted of this constituent has economic performance, extensity, systemicity.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.46 no.2
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• pp.61-71
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• 2009

In this paper, we propose a low-cost and compact motion capture system which enables to play motion games in PS2(Play Station 2). Recently, motion capture systems which are being used as a part in film producing and making games are too expensive and enormous systems. Now days, motion games using common USB camera are slow and have two-dimension recognition. But PSD sensor has a few good points, such as fast and low-cost. In recently year, 3D motion capture systems using 2D PSD (Position Sensitive Detector) optic sensor for motion capturing have been developed. One is Multi-PSD motion capture system applying stereo vision and another is Single-PSD motion capture system applying optical theory ship. But there are some problems to apply them to motion games. The Multi-PSD is high-cost and complicated because of using two more PSD Camera. It is so difficult to make markers having omni-direction equal intensity in Single-PSD. In this research, we propose a new theory that solves aforementioned problems. It can measure 3D coordination if separated two marker's intensity is equal to. We made a system based on this theory and experimented for performance capability. As a result, we were able to develop a motion capture system which is a single, low-cost, fast, compact, wide-angle and an adaptable motion games. The developed system is expected to be useful in animation, movies and games.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.831-835
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• 2006

Motion capture means the recording of movement of objects such as human beings, animals, creatures, machines, etc in a form applicable to computer. Since the motion capture system can be introduced to the fields where realistic movement of human beings and animals, which cannot be attained with an existing key frame method is required, large scale is necessary or economical burden exists, it has a merit and possibility of new expression. For these reasons, this method is increasingly used in the field of digital entertainment such as movie, TV, advertisement, documentary, music video, etc centering around the game. However, in spite of such an advantage, problems such as too much advance preparation work in digital image expressions using motion capture, marker attachment, compensation of motion data, motion retargeting and lack of professional human resources, etc. are becoming a prominent figure. Accordingly, this study intends to suggest the way of more effective production of motion capture digital image through finding the problems and their draft possible solutions in the production process based on the image production examples using motion capture.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.745-747
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• 2005

최근 가상현실을 이용한 응용에 대한 수요가 증가하고 있다. 특히, 모션캡쳐 시스템을 이용해서 가상현실 공간상의 인체 캐릭터를 동작시킬 수 있는 콘텐츠는 교육용, 오락용등으로 활용 범위가 많다고 할 수 있다. 본 논문은 그래픽 3D 사물 객체, 3D 인체 캐릭터, 소리로 가상현실 공간을 구축할 수 있고, 모션캡쳐 장비로부터 실시간 획득되는 모션데이터를 이용해서 3D 인체 캐릭터를 동작시킬 수 있는 시스템 (가상스튜디오 시스템이라 부름)을 제안한다. 참고로, 우리의 조사에 의하면, 본 시스템과 같은 연구켤과는 거의 발견할 수 없었다. 본 시스템을 가상현실을 이용한 성경콘텐츠 제작에 활용해 본 결과 만족할 만한 성과를 얻었다.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.824-828
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• 2006

Introduction of motion capture system to the field of digital entertainment paved the way to accelerate the development of 3D character animation all the more. Motion capture system has been developed of the level that it can capture the fierce motions of character particularly in the digital game image and improve the dynamic characteristics by capturing the movement of human muscle or express the human's true emotion by capturing wrinkles and expression on face. Such an extension of realistic expression enables them to be used increasingly in movie, TV, advertisement, music video, etc centering around the game industry in the field of digital entertainment. The fact is, however, that many difficulties are held in the image production process compared with the competing countries such as USA and Japan, owing to inferiorities in technical expertise and capital in the image production process using the local motion capture, insufficient professional human resources of motion capture and small size of local motion capture image market. Hence, this study intends to suggest the plan to improve the technical problems in terms of integrated motion capture system, motion capture professional human resources and motion capture in-house program development in the production process of digital entertainment image using the motion capture system by surveying local and overseas examples of image production.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.05d
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• pp.1093-1098
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• 2002

본 연구실에서 개발한 MIMIC(Motion Interface & Motion Information Capture system)은 동작자의 동작을 획득하고, 동작의 의미를 이해할 수 있도록 설계된 시스템이다. 비전 센서로부터 입력된 영상을 분석하여 동작자의 머리와 두 손, 두 발의 정보를 찾는다. 그리고, 이 정보를 기반으로 팔꿈치나 무릎 등의 중간 관절을 추정한 후 20개의 관절을 가지는 3차원 인체 모델을 구성한다. 이 인체 모델은 동작자의 동작을 실시간으로 흉내낸다. 그러므로, 기존의 마커프리 모션캡쳐 시스템과 달리 완벽한 인체를 구성하기 위한 중간 관절까지 생성함으로써 동작자의 동작을 더욱 자연스럽게 구현할 수 있다.

• Journal of Korea Multimedia Society
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• v.12 no.7
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• pp.903-912
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• 2009

There are still many difficulties in developing techniques for modifying or transforming the flickering of motion capture data or in modifying motion capture data in such a way that suits the animation timing sheet. There is a problem in the existing method of modifying motion capture data. It requires almost same time as in the key frame animation work by a very skilled animator or even more time in modifying. It is believed that this kind of problem can be a basis for a more effective problem-solving method through creating the key animation data node and direct blend layer and replacement layer nodes. This study presents a new method which enables to modify animation data in a nonlinear way without modifying the existing animation data by creating an animation layer node for a direct connection to the animation node. 'Maya' API will be utilized in order to realize this method and the research range will be limited to 'Maya' 3D software which is generally used in motion picture and animation films. According to the results of this study, the new method is much more intuitive than the nonlinear one and does not require the preceding working of making animation clips. In addition, it has enabled to modify flickering and to extract key frames, and due to the compatibility with other programs, it has been possible to modify motion capture data by creating a direct layer node. Finally, in this study, the existing method of modifying animation will be examined, compared and analyzed.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.293-294
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• 2015

영상작품에서 나날이 모션캡쳐기술의 응용이 늘어가면서, CG캐릭터 또한 사람들의 마음에 가상의 영역을 넘어선 존재감을 부여하고 있다. 최근 일본방송에서는 애니메이션 캐릭터의 실시간 텔레비전 방송이 진행되었다. 이러한 형식을 통해 사람의 감각기관을 자극해 움직여 관객과 애니메이션캐릭터의 상호작용을 현실화 시키려 하였다. 모션캡쳐기술의 빠른 발전은 현실세계와 가상세계의 소통을 촉진하고 있는 요수중의 하나로 볼 수 있다. 본문은 모션캡쳐기술의 실시간 방송의 발전 및 가상 캐릭터의 현실 생활에 대한 영향에 대해 연구 분석을 진행하여 보았다.