DocumentCode :
3542411
Title :
An MPEG-4 Quadric-based LoD simplification for facial animation
Author :
Duarte, Ricardo Leandro Parreira ; El Rhalibi, Abdennour ; Carter, Christopher ; Cooper, Simon ; Merabti, Madjid
Author_Institution :
Sch. of Comput. & Math. Sci., Liverpool John Moores Univ., Liverpool, UK
fYear :
2012
fDate :
10-12 May 2012
Firstpage :
743
Lastpage :
748
Abstract :
Level of detail (LoD) techniques provide efficient and established tools that reduce 3D models complexity while attempting to preserve their features. While these techniques are well documented and have been applied with proven results, only few solutions attempted to create a solution that is compatible with Motion Picture Experts Group (MPEG-4) facial animation standard, which involves human facial mesh simplification. In this paper we present our work on an adaptive LoD algorithm which prioritises the human face features in the facial mesh and simplifies the animation streams, reducing animation complexity and overhead. Our approach applies continuous LOD to a MPEG-4 compliant model using an extension of Garland´s Quadric-Based Surface algorithm and introducing a novel error metric. This is achieved with a novel approach that applies a selective model simplification that is both MPEG-4 compatible and also can simplify animation streams.
Keywords :
computational complexity; computer animation; face recognition; feature extraction; solid modelling; 3D model complexity; Garland quadric-based surface algorithm; MPEG-4 facial animation standard; MPEG-4 quadric-based LoD simplification; adaptive LoD algorithm; animation complexity reduction; animation streams; facial animation; facial mesh; feature preservation; human face features; human facial mesh simplification; level of detail techniques; motion picture experts group facial animation; selective model simplification; Face; Facial animation; Joints; Measurement; Mouth; Transform coding; Animation; Error Metric; Facial Animation; LOD; MPEG-4; Quadric-Base Surface Simplification;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia Computing and Systems (ICMCS), 2012 International Conference on
Conference_Location :
Tangier
Print_ISBN :
978-1-4673-1518-0
Type :
conf
DOI :
10.1109/ICMCS.2012.6320171
Filename :
6320171
Link To Document :
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