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A Facial Color Transition Model to Express Character Emotion

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Author(s): Park Kyu | Shin Seung-Ho | Chang KyuSik | Kim Tae

Journal: IETE Journal of Research
ISSN 0377-2063

Volume: 57;
Issue: 2;
Start page: 156;
Date: 2011;
Original page

Keywords: Color transition model | Emotional colors | Emotion expression | Emotion-color association | Facial color | Game character

ABSTRACT
High quality graphics for game characters has been continuously improving, spurred by the astonishing growth of the graphics technology. Despite such improvements, the current expression of emotion has limited representation because it is difficult to implement it in real-time and a large amount of storage is required to store sprites for various feelings. Since users are demanding a more expressive character to reflect emotion, such restrictions can prevent the users from getting fully indulged in a game. To address this, we propose a facial color transition model, which is a combination of the emotional colors based on the theory of emotion, the emotion-color association, and the emotional transition with personal traits. The model is implemented by using the homeostatic value, the accumulated stimulus, and nonlinear transition functions, which support diverse changes according to the character′s personality with low computational cost. The reflection of the game character′s emotion on its facial color will not only make users immerse into the game, but also enrich their fantasy in games.
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