Download 3d modeling and animation : synthesis and analysis by Nikos Sarris, Michael G. Strintzis PDF

By Nikos Sarris, Michael G. Strintzis

3D Modeling and Animation: Synthesis and research thoughts for the Human physique covers the parts of modeling and animating 3D man made human versions at a degree that's precious to scholars, researchers, software program builders and content material turbines. The reader should be provided with the newest, research-level, suggestions for the research and synthesis of nonetheless and relocating human our bodies, with specific emphasis in facial and gesture features.

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1999). Tracking human motion in structured environments using a distributed-camera system. Trans. on Pattern Analysis and Machine Intelligence, 21(12), 1241-1247. Cédras, C. & Shah, M. (1995). Motion-based recognition: A survey. Image and Vision Computing, 13(2), 129-155. Cham, T. J. & Rehg, J. M. (1999). A multiple hypothesis approach to figure tracking. Computer Vision and Pattern Recognition, 2, 239-245. Cohen, I. & Lee, M. (2002). 3D body reconstruction for immersive interaction. Second International Workshop on Articulated Motion and Deformable Objects.

Continued) (c) ϕ j applied to the subset Ω j . (d) Deformation by superposition of ϕ i and ϕ j . , n} Ω i = Ω ∩ V ( S i ) and (2) there exists a mapping ψ i from Ω i to Si, such that any vertex v ∈ Ω i is linked to a set of the elements of Si. Applying Figure 9. Deformation controllers associated with the mesh. Copyright © 2004, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. 44 Preda, Salomie, Preteux & Lafruit an affine (or not) transformation, Ti to Ci is equivalent in defining a deformation function ϕ i on Ω i such that: ∀v ∈ Ω i , ϕi (v) = µi (v) ∑ ω [T (ξ ξ k ∈ψ i ( v ) k i k ) − ξk ] , (1) where µ i is the affectedness measure associated with C i and ω k is a weigh coefficient.

46 Preda, Salomie, Preteux & Lafruit bone. Specifically, it is defined by means of: (1) a curve represented as a NURBS which can be deformed; and (2) a model of influence of the curve deformation on the skin of the model. Each bone and each muscle influences the skin deformation. Thus, by changing a bone position or orientation or by deforming the muscle curve, the skin vertices belonging to the associated influence volume will be displaced accordingly. , the subset of the affected skin vertices together with the related measure of affectedness through weighting coefficients.

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