928 search results - page 13 / 186 » On adaptive wavelet packets |
DCC
2010
IEEE
15 years 4 months ago
2010
IEEE
In lifting-based directional wavelet transforms, different subsampling patterns may show significant difference for directional signals in image coding. This paper investigates t...
TMI
2008
14 years 9 months ago
2008
Tomographic reconstruction from positron emission tomography (PET) data is an ill-posed problem that requires regularization. An attractive approach is to impose an 1-regularizatio...
ICML
2007
IEEE
15 years 10 months ago
2007
IEEE
This paper investigates compression of 3D objects in computer graphics using manifold learning. Spectral compression uses the eigenvectors of the graph Laplacian of an object'...
TIP
2011
14 years 4 months ago
2011
The Easy Path Wavelet Transform (EPWT) has recently been proposed by one of the authors as a tool for sparse representations of bivariate functions from discrete data, in particul...
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ICMCS
1999
IEEE
15 years 1 months ago
1999
IEEE
In this paper, we propose a novel scheme for automatic and fast detection of human faces in color images where the number, the location, the orientation and the size of the faces ...