• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.665-668
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• 2003

3D 모션 데이터를 생성하는 것은 어려운 작업이다. 보다 효율적으로 3D 모션 데이터를 생성하기 위해 키프레임 방식, 모션편집, 모션편집 등 여러 가지 방법이 적용되고 있다. 가장 최근에 많이 적용하고 있는 모션편집 방식은 모션편집에 있어 여러 가지 장점을 가지고 있다. 모션편집 방법이 다른 방법보다는 3D 모션 데이터 생성이 쉬운 편이지만 그래도 많은 노력과 시간을 요구한다. 그러므로 적은 시간과 노력을 들이고 보다 효율적인 3D 모션데이터 생성을 위해 다양한 방법이 시도되고 있다. 본 논문에서는 모션편집 작업 중에 발생하는 모션 불연속문제를 효율적으로 해결하기 위하여, 곡선 보간법(Curve Interpolation)과 블랜딩(Blending)함수를 활용하여 모션의 연결부분을 자연스럽게 연결하는 기법을 제시하고자 한다.

• Journal of Digital Convergence
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• v.14 no.1
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• pp.189-194
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• 2016

Recently, there is increasing demand for image processing technology while activated the use of equipments such as camera, camcorder and CCTV. In particular, research and development related to 3D image technology using the depth camera such as Kinect sensor has been more activated. Kinect sensor is a high-performance camera that can acquire a 3D human skeleton structure via a RGB, skeleton and depth image in real-time frame-by-frame. In this paper, we develop a system. This system captures the motion of a 3D human skeleton structure using the Kinect sensor. And this system can be stored by selecting the motion file format as trc and bvh that is used for general purposes. The system also has a function that converts TRC motion captured format file into BVH format. Finally, this paper confirms visually through the motion capture data viewer that motion data captured using the Kinect sensor is captured correctly.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.665-672
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• 2018

The purpose of this study is to analyze the problem of existing stop motion animation and to apply 3D printer technology and computer special effect technology applied with latest technology as a solution to solve this problem. For this purpose, we review the history of stop motion animation and confirm how the technology applied to stop motion animation through previous research. As a result, we have overcome limitations of the existing stop motion animation limited to the cline cloth in terms of expression by using 3D printer like recently released and . Furthermore, the natural phenomenon, which is the biggest limitation of stop motion animation, was able to produce a unique work of stop motion animation rather than computer special effect processing. Therefore, in the stop-motion animation, the acceptance of 3D printer technology and computer special effects technology has enabled unlimited imagination and original expression. Recent technology-based stop-motion animation is expected to provide the foundation for the continued development of the animation field in the future.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.207-209
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• 2017

3D printing, will make it integrated into one of the important branches of animation art, such as stop-motion Animation, to improve stop-motion Animation and put the modern science and technology and the manual craft into perfect combination. Throughout the development of stop-motion Animation, innovation in traditional concept is needed, to put the 3D printing integrated into traditional making and apply it to stop-motion Animation creation, and make sure to reconsider the animation production technology and production material, exploit its unique and distinctive features in multi-level and multi-angle, reshape art form of stop-motion Animation so as to highlight the advantages of 3D printing in making stop-motion animation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.163-164
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• 2023

실시간 3D 렌더링 게임의 제작 환경에서 캐릭터의 움직임은 모션 캡처(motion capture)를 통해 만들거나 애니메이터에 의해 제작된다. 걷기나 달리기 등 일정한 속도로 캐릭터가 움직이는 모션은 캐릭터가 제자리(in place)에서 움직이도록 한 뒤에 게임에서 프로그램에 의해 일정한 속도로 움직임으로써 구현할 수 있다. 하지만 일정하지 않은 속도로 움직이는 모션을 같은 방식으로 적용하면 캐릭터의 이동이 어색해진다. 이런 어색함을 보완하기 위해 언리얼이나 유니티 3D 등의 엔진에서는 루트 모션(root motion) 기능을 사용하고 있다. 그런데 루트 모션을 위한 계층 구조는 애니메이터의 작업 효율을 위한 계층 구조와 다른 측면이 있다. 본 논문에서는 3ds Max를 사용하여 애니메이터 친화적이고 루트 모션에도 적합한 캐릭터 리깅을 제시한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.232-233
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• 2015

디지털 미디어의 발전으로 인해 모션그래픽의 구성요소들은 다양한 방식으로 제작되고 있다. 모션그래픽을 활용한 영상콘텐츠 제작기법은 새로운 이미지를 어떻게 제작하느냐에 따라 보다 창의적이고 효율적인 영상으로 표현되기도 한다. 모션그래픽의 활용도는 웹, 게임, 및 영화 방송 등 다양한 콘텐츠의 시각적 정보전달의 의미를 가지고 있다. 모션그래픽의 새롭고 실험적인 작업은 어떠한 제작방식에 따라 그 결과는 아주 다르게 나타난다. 또한 영상제작에 대한 프로세스는 새로운 뉴미디어의 기술의 결합으로 영상콘텐츠의 창의적인 작품으로 된다. 따라서 본 논문은 모션그래픽의 제작방식에서 실사카메라의 움직임을 가상카메라로 트래킹하여 입체적인 모션그래픽을 구현하는 제작방법을 제시한다.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.780-785
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• 2006

HCI, 비전 기반 사용자 인터페이스 또는 제스쳐 인식과 같은 많은 분야에서 3 차원 얼굴 모션을 추정하는 것은 중요한 작업이다. 연속된 2 차원 이미지로부터 3 차원 모션을 추정하기 위한 방법으로는 크게 외형 기반 방법이나 모델을 이용하는 방법이 있다. 본 연구에서는 동영상으로부터 3 차원 실린더 모델과 Optical flow를 이용하여 실시간으로 얼굴 모션을 추정하는 방법을 제안하고자 한다. 초기 프레임으로부터 얼굴의 피부색과 템플릿 매칭을 이용하여 얼굴 영역을 검출하고 검출된 얼굴 영역에 3 차원 실린더 모델을 투영하게 된다. 연속된 프레임으로 부터 Lucas-Kanade 의 Optical flow 를 이용하여 얼굴 모션을 추정한다. 정확한 얼굴 모션 추정을 하기 위해 IRLS 방법을 이용하여 각 픽셀에 대한 가중치를 설정하게 된다. 또한, 동적 템플릿을 이용해 오랫동안 정확한 얼굴 모션 추정하는 방법을 제안한다.

• 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.

• Journal of Broadcast Engineering
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• v.22 no.4
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• pp.429-437
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• 2017

2D-to-3D conversion technology has been studied over past decades and integrated to commercial 3D displays and 3DTVs. Generally, depth cues extracted from a static image is used for generating a depth map followed by DIBR (Depth Image Based Rendering) for producing a stereoscopic image. Further, motion is also an important cue for depth estimation and is estimated by block-based motion estimation, optical flow and so forth. This papers proposes a new method for motion depth generation using Motion History Image (MHI) and evaluates the feasiblity of the MHI utilization. In the experiments, the proposed method was performed on eight video clips with a variety of motion classes. From a qualitative test on motion depth maps as well as the comparison of the processing time, we validated the feasibility of the proposed method.

• The Journal of the Korea Contents Association
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• v.6 no.9
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• pp.98-107
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• 2006

By improving performance of mobile machine(3D engine, 3D accelerator chip set, etc) and developing wireless network technology, a demand for actual contents of users is being increased rapidly. But, there are some difficulties yet for the speedy development of actual contents because of the limitation of development resources that is dependent on each mobile device's different performance. In general, much of the animated character-creation work for mobile environment is still done manually by experienced animator with the method of key frame processing. However, it needs a lot of time and more costs for creating motion. Additionally, it is possible to cause a distortion of motion. In this paper, I solved the difficulties by using a optical motion capture system, it was able to acquire accurate motion data more easily and quickly, and then it was possible to make 3D dance contents efficiently. Also, I showed techniques of key reduction and controlling frame number for using huge amounts of motion capture data in mobile environment which requires less resources. In making 3D dance contents, using an optical motion capture system was verified that it was more efficient to make and use actual-reality contents by creating actual character motion and by decreasing processing time than existing method.