tailieunhanh - Báo cáo hóa học: " Research Article Adaptive Processing of Range Scanned Head: Synthesis of Personalized Animated Human Face Representation with Multiple-Level Radial Basis Function"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Adaptive Processing of Range Scanned Head: Synthesis of Personalized Animated Human Face Representation with Multiple-Level Radial Basis Function | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 27658 16 pages doi 2007 27658 Research Article Adaptive Processing of Range Scanned Head Synthesis of Personalized Animated Human Face Representation with Multiple-Level Radial Basis Function C. Chen1 and Edmond C. Prakash2 1 School of Computer Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 2 Department of Computing and Mathematics DOCM Manchester Metropolitan University Chester Street Manchester M1 5GD UK Received 6 February 2006 Revised 29 July 2006 Accepted 10 September 2006 Recommended by Ming Ouhyoung We propose an animation system for personalized human head. Landmarks compliant to MPEG-4 facial definition parameters FDP are initially labeled on both template model and any target human head model as priori knowledge. The deformation from the template model to the target head is through a multilevel training process. Both general radial basis function RBF and compactly supported radial basis function CSRBF are applied to ensure the fidelity of the global shape and face features. Animation factor is also adapted so that the deformed model still can be considered as an animated head. Situations with defective scanned data are also discussed in this paper. Copyright 2007 Hindawi Publishing Corporation. All rights reserved. 1. INTRODUCTION Many research efforts have been focused on the achievement of realistic representation of human face since the pioneer work of Parke 1 . However the complex facial anatomical structure and various facial tissue behavior make it still a formidable challenge in computer graphics area. The animated head system can find place in multimedia applications including human-computer interaction video conference system and entertainment industry. For traditional facial shape modeling we need a skilled modeler to spend a lot of time on building the model from scratch. With the availability of range .