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http://dx.doi.org/10.6109/jkiice.2008.12.9.1547

The facial expression generation of vector graphic character using the simplified principle component vector  

Park, Tae-Hee (동명대학교 메카트로닉스공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.12, no.9, 2008 , pp. 1547-1553 More about this Journal
Abstract
This paper presents a method that generates various facial expressions of vector graphic character by using the simplified principle component vector. First, we analyze principle components to the nine facial expression(astonished, delighted, etc.) redefined based on Russell's internal emotion state. From this, we find principle component vector having the biggest effect on the character's facial feature and expression and generate the facial expression by using that. Also we create natural intermediate characters and expressions by interpolating weighting values to character's feature and expression. We can save memory space considerably, and create intermediate expressions with a small computation. Hence the performance of character generation system can be considerably improved in web, mobile service and game that real time control is required.
Keywords
face animation; vector graphic; principle component vector; interpolation; real-time control;
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