253 search results - page 39 / 51 » Nonlinear image representation using divisive normalization |
106
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AMFG
2007
IEEE
15 years 3 months ago
2007
IEEE
Extending recognition to uncontrolled situations is a key challenge for practical face recognition systems. Finding efficient and discriminative facial appearance descriptors is c...
CVPR
2009
IEEE
15 years 1 months ago
2009
IEEE
In this paper, we present a kernel-based approach to the clustering of diffusion tensors and fiber tracts. We propose to use a Mercer kernel over the tensor space where both spati...
112
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CGF
2010
14 years 6 months ago
2010
Existing algorithms can efficiently render refractive objects of constant refractive index. For a medium with a continuously varying index of refraction, most algorithms use the r...
BMVC
2010
14 years 7 months ago
2010
We present a framework for the reduction of dimensionality of a data set via manifold learning. Using the building blocks of local hyperplanes we show how a global manifold can be...
118
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VISUALIZATION
2002
IEEE
15 years 2 months ago
2002
IEEE
In this paper we introduce a new and simple algorithm to compress isosurface data. This is the data extracted by isosurface algorithms from scalar functions defined on volume gri...