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15 results on '"Laycock, R. G."'

2. Simulating real-time cloth with adaptive edge-based

Author

Simnett, T. J. R., Laycock, R. G., Day, A. M., and Skala, Václav

Subjects
adaptive mesh, adaptivní mřížka, simulace tkaniny, cloth simulation, garment, ComputingMethodologies_COMPUTERGRAPHICS, oděv
Abstract

We present an approach to simulating detailed cloth in real-time using an adaptive edge-based mesh, by enhancing its usability and performance. We show how simple seaming can be used to combine multiple adaptive meshes into garments, accomplished with the use of discontinuous material co-ordinates. Performance is improved by decoupling the mesh adaption and simulation steps, allowing efficient data structures to be exploited for the simulation and collision detection. Greater memory efficiency is achieved by pre-allocating a pool of memory to be used by any mesh at any hierarchical level. The collision detection process is integrated into the edge-based adaption technique, enabling a garment to be coarsened and refined repeatedly, such that no new vertices are created inside of the object in collision. Our technique is illustrated for a 67k triangle character wearing a T-shirt adaptively refined to 6k triangles in real-time.

Published
2010

3. Geometric Diversity for Crowds on the GPU

Author

Lister, W., Laycock, R. G., Day, A. M., Chen, Min, and Skala, Václav

Subjects
vykreslování, geometrická diverzita, grafické procesory, rendering, graphic processing units, geometric diversity, ComputingMethodologies_COMPUTERGRAPHICS
Abstract

Pure geometric techniques have emerged as viable real-time alternatives to those traditionally used for rendering crowds. However, although capable of drawing many thousands of individually animated characters, the potential for injecting intra-crowd diversity within this framework remains to be fully explored. For urban crowds, a prominent source of diversity is that of clothing and this work presents a technique to render a crowd of clothed, virtual humans whilst minimising redundant vertex processing, overdraw and memory consumption. By adopting a piecewise representation, given an assigned outfit and pre-computed visibility metadata, characters can be constructed dynamically from a set of sub-meshes and rendered using skinned instancing. Using this technique, many thousands of independently clothed, animated and textured characters can be rendered at 40 fps.

Published
2009

12. A Key-Pose Caching System for Rendering an Animated Crowd in Real-Time.

Author

Lister, W., Laycock, R. G., and Day, A. M.

Subjects
*COMPUTER-generated imagery, *COMPUTER graphics, *COMPUTER drawing, *COMPUTER storage devices, *ALGORITHMS, *VISUAL programming languages (Computer science)
Abstract

We present a method to accelerate the visualization of large crowds of animated characters. Linear-blend skinning remains the dominant approach for animating a crowd but its efficiency can be improved by utilizing the temporal and intra-crowd coherencies that are inherent within a populated scene. Our work adopts a caching system that enables a skinned key-pose to be re-used by multi-pass rendering, between multiple agents and across multiple frames. We investigate two different methods; an intermittent caching scheme (whereby each member of a crowd is animated using only its nearest key-pose) and an interpolative approach that enables key-pose blending to be supported. For the latter case, we show that finding the optimal set of key-poses to store is an NP-hard problem and present a greedy algorithm suitable for real-time applications. Both variants deliver a worthwhile performance improvement in comparison to using linear-blend skinning alone. [ABSTRACT FROM AUTHOR]

Published
2010
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13. Siggraph 2006 Boston, Massachusetts, 30th July–3rd August 2006.

Author

Laycock, R. G., Laycock, S. D., Ryder, G., and Day, A. M.

Subjects
*CONFERENCES & conventions, *COMPUTER graphics
Abstract

Information on Siggraph's 33rd International Conference on Computer Graphics and Interactive Techniques held through 30th July to 3rd August, 2006 at Boston, Massachusetts is presented. The sessions at the conference highlighted information from tutorials on fluid simulation and computational photography to the latest research developments. Several events including installation competitions, graphic display and others marked the conference.

Published
2007
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14. Siggraph 2005 Los Angeles, California, 31st July–4th August 2005.

Author

Laycock, S. D., Laycock, R. G., and Day, A. M.

Subjects
*CONFERENCES & conventions, *COMPUTER graphics, *LECTURES & lecturing, *INTERACTIVE multimedia, *DIGITAL image processing
Abstract

The article focuses on the 323nd International Conference on Computer Graphics and Interactive techniques from July 31 through August 4, 2005 in Los Angeles, California. The theme of the conference was patterned to the motion picture "Star Wars." The lecture of keynote speaker George Lucas dealt with insights on the digital film.

Published
2005
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15. Siggraph 2004.

Author

Laycock, S. D., Laycock, R. G., Ryder, G., Juarez-Comboni, J., and De Oca, C. Montes

Subjects
*CONFERENCES & conventions, *COMPUTER software, *COMPUTER-generated imagery, *COMPUTER drawing
Abstract

Reports on the Siggraph convention which was held at the Los Angeles Convention Center in California on August 8-12, 2004. Increase in the number of attendees in 2004 compared to the 2003 convention; Products introduced by chip manufacturers ATI, NVIDIA and 3Dlabs; Information on the 3ds max 7 software from Discreet; Highlights of the computer animation festival.

Published
2004
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