263 search results - page 20 / 53 » The Global Dimensionality of Face Space |
CVPR
2007
IEEE
14 years 10 months ago
2007
IEEE
A large family of algorithms for dimensionality reduction end with solving a Trace Ratio problem in the form of arg maxW Tr(WT SpW)/Tr(WT SlW)1 , which is generally transformed in...
PAKDD
2010
ACM
13 years 6 months ago
2010
ACM
Data mining tasks results are usually improved by reducing the dimensionality of data. This improvement however is achieved harder in the case that data lay on a non linear manifol...
COMPGEOM
2001
ACM
14 years 4 days ago
2001
ACM
We present two approaches to the problem of calculating a cell in a 3-dimensional arrangement of quadrics. The first approach solves the problem using rational arithmetic. It work...
PAMI
2007
13 years 8 months ago
2007
This paper considers the problem of dimensionality reduction by orthogonal projection techniques. The main feature of the proposed techniques is that they attempt to preserve both...
SIGGRAPH
2000
ACM
14 years 1 days ago
2000
ACM
We present a method to acquire the reflectance field of a human face and use these measurements to render the face under arbitrary changes in lighting and viewpoint. We first acqu...