• 한국HCI학회:학술대회논문집
• /
• 2009.02a
• /
• pp.531-537
• /
• 2009

When creating large crowds, it is unavoidable that the models and motions of many characters will be cloned. McDonnell implemented experiments focus on appearance and motion of characters to test user perception of crowds. As a result, appearance clones were easier to perceive than motion clones. In this paper, I researched about relation between character cloning and user perception for real-time game environment expanding McDonnell's research. This paper focuses on the way to recognition of multiple clones in dramatic environment free to change view point and has crowds move to every directions by trajectories. In particular, this paper shows the possibility of character diversification applied various shapes, colors and patterns to game item have important elements for game characters. Also, I suggests range of distances between clones by a series of experiments of user perception for clones's moving direction and distance.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2015.01a
• /
• pp.187-188
• /
• 2015

본 논문에서는 IK 리깅을 이용한 캐릭터 콘텐츠 영상 제작을 제안한다. IK 콘텐츠를 2D와 3D로 제작할 수 있는데 본 연구에서는 2D로 캐릭터의 이미지를 레이어로 제작하고, IK의 bone은 스크립트로 생성하였다. 따라서 인체의 각 관절에 해당하는 부위에 리깅을 부여하여 자유로운 캐릭터를 제작하였고, 이러한 캐릭터의 제작은 모션 캡처 제작비용에 비해서 상당히 비용부담이 적은 경제성을 나타내고, 다양한 영역에서 활용 할 수 있다고 사료한다.

• Journal of KIISE:Computing Practices and Letters
• /
• v.15 no.10
• /
• pp.791-795
• /
• 2009

There is a need for a system independent human data format that doesn't depend on a specific graphics tool or program to use interoperable human data in a network environment. To achieve this, the Web3D Consortium and ISO/IEC JTC1 WG6 developed the international draft standard ISO/IEC 19774 Humanoid Animation(H-Anim). H-Anim defines the data structure for an articulated human figure, but it does not yet define the data for human motion generation. This paper discusses a method of obtaining compatibility and independence of motion data between application programs, and describes a method of simplifying motion retargetting necessary for motion definition of H-Anim characters. In addition, it describes a method of generating H-Anim character animation using arbitrary 3D character models and arbitrary motion capture data without any inter-relations, and its implementation results.

• The KIPS Transactions:PartB
• /
• v.13B no.2 s.105
• /
• pp.187-196
• /
• 2006

In 3D animation most people adjust the moving motion of their characters on various terrains by using motion data acquired with the motion capture equipment. The motion data can be used to present real human motions naturally, but the data must be captured again to apply to the different terrains from those given at acquiring mode. In addition, there would be a difficulty when applying the data to other characters, in that case the motion data must be captured newly or the existing motion data must be heavily edited manually. In this paper we propose a unified method to generate human motions of walking and running for various terrains such as flat plane, inclined plane, stairway and irregular face. With these methods we are able to generate human motions controlled by the parameters : body height, moving speed, stride, etc. In the proposed methods, the positions and angles of joint can be calculated by using inverse kinematics, and we calculate the trajectory of the swing leg and pelvis according to the cubic spline. With these methods we were presented moving motions using a model of a human body.

• Journal of Korea Multimedia Society
• /
• v.12 no.8
• /
• pp.1155-1163
• /
• 2009

This paper proposes an automatic facial expression generation system of vector graphic character using gaussian process model. Proposed method extracts the main feature vectors from twenty-six facial data of character redefined based on Russell's internal emotion state. Also by using new gaussian process model, SGPLVM, we find low-dimensional feature data from extracted high-dimensional feature vectors, and learn probability distribution function (PDF). All parameters of PDF are estimated by maximization the likelihood of learned expression data, and these are used to select wanted facial expressions on two-dimensional space in real time. As a result of simulation, we confirm that proposed facial expression generation tool is working in the small facial expression datasets and can generate various facial expressions without prior knowledge about relation between facial expression and emotion.

• The Journal of the Korea Contents Association
• /
• v.9 no.5
• /
• pp.99-106
• /
• 2009

The purpose of this study is to analyze character of animation, , on the basis of Greimas' semiotic theory. Animation consists of activities between characters shown in narrative. The characters' activities show their value system and meaning. Hierarchical value system is created in the process that unrevealed, latent value is generated and character's thought and activity enlarge their meanings by creating various relationships with other character. Form this viewpoint, the study tried to analyze systematic characteristic shown in animation character and meaning structure shown in correlation through Greimas' model actant and semiotic square model.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2012.05a
• /
• pp.521-523
• /
• 2012

In the field of virtual reality and game production with realistic, real-time character's behavior is frequently used. In this paper, the terrain changes or other actions on the surrounding environment by implementing adaptive any action that is the most natural and can be adapted to analyze real-time character animation is implemented. For this purpose, in order to control the various movements of the character of the human body, by highlighting the major joints Kinematic dummy character animation is to create a way. Changes in terrain height difference of the two stairs that could cause analysis of the behavior in the environment and the other on the surrounding environment by adapting behavior to analyze the behavior of the slope climbing Based on this, the character animation is implemented.

• Journal of Digital Contents Society
• /
• v.9 no.4
• /
• pp.669-677
• /
• 2008

Since the great success of the Disney animations like , the classification of audience target in animation according to an age group started a possibility of edutainment in the industry. Especially, a few animations for preschool children made by Korea have been largely successful in domestic and foreign markets. The study analyzed a distinguished structure of a story stressed by character by Greimas's theories in the educational animation. The animation for kids as this study target is one of successful contents in edutainment. It also analyzed as one of parallel contents in abroad. It is a meaningful study which considers a story structure of the animation as aspects of edutainment contents for preschool children.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.12 no.3
• /
• pp.438-444
• /
• 2008

In this study, we propose a automatic facial expression generation tool which can generate various facial expressions efficiently for animation characters expressing various emotion. For this purpose, 9 types of facial expressions were defined by adopting Russell's pleasure-displeasure and arousal-sleep coordinate values of infernal states. And by rendering specific coordinate values consisted of the two basic dimensions of emotion(i.e., dimensions of pleasure-displeasure and arousal-sleep) and their combination, the proposed automatic facial expression generation tool could yield various facial expressions which reflected subtle changes in characters' emotion. It is expected that the tool could provide useful method of generating character face with various emotion.

• Journal of Korea Multimedia Society
• /
• v.14 no.6
• /
• pp.824-834
• /
• 2011

In this study, the method to generate facial animation of SVG format based online character AUtomatically was proposed. The re-targeted character can reproduce the modeling facial movements itself without losing the unique formative properties by modeling abundant facial movements of the character in the existing animation for movie theater through the mathematical calculation and 'retargeting' this to other character of SVG format. The method of retargeting facial movements like this can be applied to the various characters by only one facial data so although non-specialists, even not an animator can create facial animation of character easily and rapidly. The suggested facial movement in this study is nonlinear and an exaggerated motion so it is friendly to the viewers and it is lively. Besides, it is based on the SVG format, so the smooth facial movements can be implemented by less capacity than existing GIF animation.