Download e-book for iPad: Animation and Performance Capture Using Digitized Models by Edilson de Aguiar

By Edilson de Aguiar

The real looking iteration of digital doubles of real-world actors has been the focal point of special effects examine for a few years. even if, a few difficulties nonetheless stay unsolved: it really is nonetheless time-consuming to generate personality animations utilizing the conventional skeleton-based pipeline, passive functionality seize of human actors donning arbitrary daily clothing continues to be not easy, and formerly, there's just a restricted volume of ideas for processing and editing mesh animations, not like the large volume of skeleton-based thoughts. during this paintings, we recommend algorithmic recommendations to every of those difficulties. First, effective mesh-based choices to simplify the general personality animation procedure are proposed. even if leaving behind the concept that of a kinematic skeleton, either suggestions should be at once built-in within the conventional pipeline, producing animations with sensible physique deformations. Thereafter, 3 passive functionality seize tools are offered which hire a deformable version as underlying scene illustration. The recommendations may be able to together reconstruct spatio-temporally coherent time-varying geometry, movement, and textural floor visual appeal of topics donning free and daily clothing. additionally, the received top quality reconstructions permit us to render real looking 3D video clips. on the finish, novel algorithms for processing mesh animations are defined. the 1st one allows the fully-automatic conversion of a mesh animation right into a skeletonbased animation and the second instantly converts a mesh animation into an animation university, a brand new inventive sort for rendering animations. The tools defined during this publication could be considered as recommendations to express difficulties or very important construction blocks for a bigger software. As a complete, they shape a strong procedure to correctly trap, control and realistically render real-world human performances, exceeding the functions of many comparable trap suggestions. by means of this suggests, we will accurately seize the movement, the time-varying info and the feel info of a true human appearing, and rework it right into a fully-rigged personality animation, that may be at once utilized by an animator, or use it to realistically exhibit the actor from arbitrary viewpoints.

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References 1. : M3: Marker-free model reconstruction and motion tracking from 3d voxel data. In: Proc. of PG, pp. 101– 110 (2004) 2. : Automatic learning of articulated skeletons from 3d marker trajectories. In: Proc. ISVC, pp. 485–494 (2006) 3. : Rapid animation of laser-scanned humans. In: IEEE Virtual Reality 2007, pp. 223–226 (2007) 4. : A simple framework for natural animation of digitized models. In: IEEE SIBGRAPI (2007) 5. : Video-driven animation of human body scans. In: IEEE 3DTV Conference (2007) 6.

E. deformations should be smooth or piecewise smooth and the result should preserve the local appearance of the surface under deformation. Recently, linear deformation methods based on differential representations have gained more popularity because they are fast to compute, robust, and easy to implement, as the associated linear system is sparse. Instead of directly modify the spatial location of each vertex in the model, they use a local differential representation of the shape, which encodes information about its local shape and the size and orientation of the local details, to obtain a detail-preserving deformation result.

1 Overview Our goal is to provide animators with a simple and fast method to directly apply captured motion to human models, e. g. scanned models. The input to our method E. de Aguiar: Animation & Performance Capture Using Digi. Models, COSMOS 5, pp. 45–54. com 46 6 Poisson-Based Skeleton-Less Character Animation Fig. 1 Illustration of the workflow of our system. is a human body scan Mtri and motion data generated from real individuals using optical motion estimation methods, Fig. 1. The first processing step normalizes these sequences of key body poses by transforming them into a sequence of postures of a simple triangle mesh model, henceforth termed template mesh.

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