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SIGGRAPH
1999
ACM
14 years 1 months ago
1999
ACM
In this paper we present a technique for computing the direct lighting in a three-dimensional scene containing area light sources. Our method correctly handles partial visibility ...
MMS
2008
13 years 9 months ago
2008
We address the challenge of semantic gap reduction for image retrieval through an improved SVM-based active relevance feedback framework, together with a hybrid visual and concept...
ISCAS
2006
IEEE
14 years 3 months ago
2006
IEEE
— A subspace supervised learning algorithm named Discriminant Non-negative Matrix Factorization (DNMF) has been recently proposed for classifying human facial expressions. It dec...
TSP
2010
13 years 3 months ago
2010
The problem of recovering a signal from its low frequency components occurs often in practical applications due to the lowpass behavior of many physical systems. Here we study in d...
ISPDC
2006
IEEE
14 years 3 months ago
2006
IEEE
Data replication permits a better network bandwidth utilization and minimizes the effect of latency in large-scale systems such as computing grids. However, the cost of maintainin...