33 search results - page 6 / 7 » Unsupervised Discriminant Embedding in Cluster Spaces |
ICPR
2004
IEEE
14 years 8 months ago
2004
IEEE
In this paper, we propose an unsupervised approach to select representative face samples (models) from raw videos and build an appearance-based face recognition system. The approa...
MIR
2003
ACM
14 years 20 days ago
2003
ACM
In a typical content-based image retrieval (CBIR) system, query results are a set of images sorted by feature similarities with respect to the query. However, images with high fea...
CVPR
2009
IEEE
13 years 11 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...
ICCV
2003
IEEE
14 years 9 months ago
2003
IEEE
We propose a principled account on multiclass spectral clustering. Given a discrete clustering formulation, we first solve a relaxed continuous optimization problem by eigendecomp...
CVPR
2009
IEEE
15 years 2 months ago
2009
IEEE
In this paper, we propose a novel approach for learning generic visual vocabulary. We use diffusion maps to au-tomatically learn a semantic visual vocabulary from ab-undant quantiz...