TY - GEN
T1 - Using particles to sample and control more complex implicit surfaces
AU - Hart, John C.
AU - Bachta, Ed
AU - Jarosz, Wojciech
AU - Fleury, Terry
PY - 2002/12/1
Y1 - 2002/12/1
N2 - In 1994, Witkin and Heckbert developed a method for interactively modeling implicit surfaces by simultaneously constraining a particle system to lie on an implicit surface and vice-versa. This interface was demonstrated to be effective and easy to use on example models containing a few blobby spheres and cylinders. This system becomes much more difficult to implement and operate on more complex implicit models. The derivatives needed for the particle system behavior can become laborious and error-prone when implemented for more complex models. We have developed, implemented and tested techniques for automatic and numerical differentiation of the implicit surface function. Complex models also require a large number of parameters, and the management and control of these parameters is often not intuitive. We have developed adapters, which are special shape-transformation operators that automatically adjust the underlying parameters to yield the same effect as the transformation. These new techniques allow constrained particle systems to sample and control more complex models than before possible.
AB - In 1994, Witkin and Heckbert developed a method for interactively modeling implicit surfaces by simultaneously constraining a particle system to lie on an implicit surface and vice-versa. This interface was demonstrated to be effective and easy to use on example models containing a few blobby spheres and cylinders. This system becomes much more difficult to implement and operate on more complex implicit models. The derivatives needed for the particle system behavior can become laborious and error-prone when implemented for more complex models. We have developed, implemented and tested techniques for automatic and numerical differentiation of the implicit surface function. Complex models also require a large number of parameters, and the management and control of these parameters is often not intuitive. We have developed adapters, which are special shape-transformation operators that automatically adjust the underlying parameters to yield the same effect as the transformation. These new techniques allow constrained particle systems to sample and control more complex models than before possible.
UR - http://www.scopus.com/inward/record.url?scp=33847290433&partnerID=8YFLogxK
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U2 - 10.1109/SMI.2002.1003537
DO - 10.1109/SMI.2002.1003537
M3 - Conference contribution
AN - SCOPUS:33847290433
SN - 0769515460
SN - 9780769515465
T3 - Proceedings - SMI 2002: Shape Modeling International 2002
SP - 129
EP - 136
BT - Proceedings - SMI 2002
T2 - 2002 Shape Modeling International, SMI 2002
Y2 - 17 May 2002 through 22 May 2002
ER -