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ICML
2008
IEEE
14 years 9 months ago
Expectation-maximization for sparse and non-negative PCA
We study the problem of finding the dominant eigenvector of the sample covariance matrix, under additional constraints on the vector: a cardinality constraint limits the number of...
Christian D. Sigg, Joachim M. Buhmann
TOG
2012
188views Communications» more  TOG 2012»
11 years 11 months ago
Deformable objects alive!
We present a method for controlling the motions of active deformable characters. As an underlying principle, we require that all motions be driven by internal deformations. We ach...
Stelian Coros, Sebastian Martin, Bernhard Thomasze...
ISBI
2007
IEEE
14 years 3 months ago
Dynamic Texture Based Heart Localization and Segmentation in 4-D Cardiac Images
In this paper we present a dynamic texture based motion segmentation approach to address the challenging problem of heart localization and segmentation in 4D Spatio-temporal cardi...
Junzhou Huang, Xiaolei Huang, Dimitris N. Metaxas,...
CGF
2008
129views more  CGF 2008»
13 years 8 months ago
Sequential Monte Carlo Adaptation in Low-Anisotropy Participating Media
This paper presents a novel method that effectively combines both control variates and importance sampling in a sequential Monte Carlo context. The radiance estimates computed dur...
Vincent Pegoraro, Ingo Wald, Steven G. Parker
RT
2005
Springer
14 years 2 months ago
Real Illumination from Virtual Environments
We introduce a method for actively controlling the illumination in a room so that it is consistent with a virtual world. In combination with a high dynamic range display, the syst...
Abhijeet Ghosh, Matthew Trentacoste, Helge Seetzen...