• Journal of Korea Game Society
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• v.16 no.4
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• pp.97-104
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• 2016

This study suggests a technique to implement the production of animation by blending between key frame animation and motion capture animation through short animation 'Drip.' It reduced the time taken to produce an animation by not only enabling efficient process management through mutual organic connection but also conducting a process of mutually making up for weak points of key frame animation and motion capture animation. Through this, it was intended to be helpful in efficient animation production by overcoming the limitation of key frame animation and motion capture animation and perceiving and applying a complex process.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06b
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• pp.250-255
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• 2008

다양한 스타일의 인간 동작을 쉽고 빠르게 생성하는 일은 캐릭터 애니메이션에서 매우 중요한 문제이다 실제로 이러한 애니메이션을 만드는데 있어서 가장 고품질의 결과를 얻을 수 있는 방법은, 전문 애니메이터가 3차원 애니메이션 제작 도구를 사용하여 직접 만드는 것이다. 하지만 일반 사용자가 이와 비슷한 애니메이션을 만드는 것은 어려운 일이다. 이 논문에서는 누구나 쉽게, 그리고 일정 품질 이상으로 3차원 캐릭터 애니메이션을 제작할 수 있는 시스템을 제안한다. 이를 위해서 스케치기반 인터페이스와 모션 데이터베이스를 이용한다. 스케치기반 인터페이스는 일반 사용자가 어렵게 느낄 수 있는, 키 프레임을 쉽고 빠르게 지정할 수 있도록 도와준다. 모션 데이터베이스는 이러한 키 프레임을 설정을 돕고, 애니메이션 제작에 필요한 키 프레임 수를 줄인다. 이 방법으로 누구나 원하는 애니메이션을 쉽고 빠르게 생성할 수 있다.

• Journal of Digital Contents Society
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• v.9 no.2
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• pp.331-339
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• 2008

This paper presents the development of certain highly efficient and accurate system for producing animation key data for 3D lip-synch animation. The system developed herein extracts korean phonemes from sound and text data automatically and then computes animation key data using the segmented phonemes. This animation key data is used for 3D lip-synch animation system developed herein as well as commercial 3D facial animation system. The conventional 3D lip-synch animation system segments the sound data into the phonemes based on English phonemic system and produces the lip-synch animation key data using the segmented phoneme. A drawback to this method is that it produces the unnatural animation for Korean contents. Another problem is that this method needs the manual supplementary work. In this paper, we propose the 3D lip-synch animation system that can segment the sound and text data into the phonemes automatically based on Korean phonemic system and produce the natural lip-synch animation using the segmented phonemes.

• The Journal of the Korea Contents Association
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• v.8 no.9
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• pp.74-83
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• 2008

In animation films, the movements of characters are exaggerated and comical. Traditional key-frame animation techniques allow to control exaggeration and comicality of characters at animators' wills. But, recently introduced motion capture techniques have limits on representing comicality and exaggeration although it is convenient to capture subjects' natural looks. This paper chooses two animations from key-frame and motion capture techniques and looks into comicality and exaggeration of characters by analyzing movements and motion of them Movements are classified as four fundamental motion elements - running, jump, gesture and walking - and are analyzed to compare the way of representation from two films. By studying similarity and differentiation of movements of two films, this paper discusses the advantages and disadvantages of key-frame and motion capture techniques in terms of exaggeration and comicality. Comparison of the character movements from two techniques shows that there are common differentiations of those movements.

• The Journal of the Korea Contents Association
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• v.7 no.4
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• pp.160-169
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• 2007

Main problem in the domestic motion capture type production is that motion data are used even in the case when the human sensibility is needed. In other words it fails to give human images to the work, and production method only use motion capture data unconditionally and impetuously. Even though motion capture is effective and are various and applicable to various areas, it would cause enormous lose of capital and manual labor if these problems are not solved. In the present study, we compare motion capture with key animation production and analyze the merits and short comings of them. Also, we analyze them through the actual production and present the efficient method of key animation production when the expensive motion capturing devices are not available.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.409-413
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• 2008

최근, 3차원 그래픽스 기술은 애니메이션 필름 제작에 있어서 자주 사용된다. 그러나 많은 애니메이션 필름들은 3차원 그래픽스 기술을 사용하여 제작되더라도, 2차원 셀 애니메이션 효과를 내려고 한다. 3차원 그래픽스 기술을 이용하여 2차원 셀 애니메이션의 효과를 내기 위해서는 렌더링에는 카툰 렌더링이 사용 된다. 그러나 이를 제외하고도 몇 가기 기술이 더 필요한데, 그중 하나가 만화 캐릭터(character)의 만화스러운 움직임이다. 기존의 연구 중에는 기존의 모션을 만화적 모션으로 변형하려는 시도가 있었으나, 셀 애니메이션의 캐릭터 움직임과 차이가 있었다. 또 생성된 모션이 만화적 모션인가 하는 의문에 대한 평가 기준이 없기 때문에, 만화적 모션의 모호성 문제가 발생하였다. 본 논문에서는 직접 애니메이션에서 모션을 얻어내는 시스템을 제안한다. 2차원 애니메이션 동영상에서 2차원 캐릭터의 자세를 보고 3차원 캐릭터의 자세로 반자동 맵핑하여, 3차원 캐릭터의 애니메이션 키 프레임을 생성하고, 이 키 프레임간의 보간을 통해 3차원 캐릭터 애니메이션을 생성한다. 생성된 3차원 캐릭터 애니메이션은 만화적 움직임을 갖게 되며, 2차원 캐릭터의 자세와 움직임을 기준으로 만들었기 때문에, 만화적 모호성을 극복할 수 있다.

• Journal of the Korea Computer Graphics Society
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• v.13 no.3
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• pp.11-18
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• 2007

Creating stylistic facial animation is one of the most important problems in character animation. Traditionally facial animation is created manually by animators of captured using motion capture systems. But this process is very difficult and labor-intensive. In this work, we present an intuitive, easy-to-use, sketch-based user interface system that facilitates the process of creating facial animation and key-frame interpolation method using facial capture data. The user of our system is allowed to create expressive speech facial animation easily and rapidly.

• Electronics and Telecommunications Trends
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• v.14 no.3 s.57
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• pp.44-53
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• 1999

국내 컴퓨터 그래픽스 시장에서 가장 일반적으로 선택되어지는 애니메이션 소프트웨어인 Maya, Soft-Image, 3D Studio Max를 대상으로 그 기능과 편의성을 위주로 비교한다. 애니메이션 작업에 가장 널리 사용되는 키프레임 애니메이션, 변형, 역운동학 및 동역학 애니메이션 기술 등을 애니메이션 소프트웨어 설계의 관점에서 비교한다

• Cartoon and Animation Studies
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• s.41
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• pp.57-73
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• 2015

A pose is an important component in the animation with timing and spacing. Pose is the key to describe the story-telling or how the animation behavior. Key animation method is Straight Ahead and pose to pose method. Many animaters have been using these two methods, or by a mix of two ways. It is possible that computer animation make a pose using interpolation between keyframes. The many animators of computer animation are using pose to pose in their work. It is depend on good and strong pose that make audience understand a story or a situation. This makes animators to be efficient of inefficient operation. In this study, according to the effective good pose to catch proposes four ways. There are four methods of making pose that are stretch and squash, the height of the character, the center of weight, step. The law of 12 kinds of Disney Animation is a good reference for the study.

• Journal of Korea Multimedia Society
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• v.10 no.1
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• pp.36-48
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• 2007

This paper proposed 3D keyframe animation using orientation interpolator. 3D keyframe animation consists of a number of transform nodes that have geometrical node of initial model and several interpolator nodes that represent the object moving. In the proposed algorithm, we randomly selects transform nodes with orientation interpolator node and performs to resample quaternion components for haying uniform key time. And then, watermark bits are embedded into quaternion components with large rotation angles. Experimental results verified that the watermark embedded by the proposed algorithm had good robustness against geometrical attacks and timeline attacks and also PSNR of keyvalue in orientation interpolator node is above 42dB.