160 search results - page 21 / 32 » Sparse decompositions in |
185
Voted
ICCV
2011
IEEE
13 years 10 months ago
2011
IEEE
We present a hierarchical model that learns image decompositions via alternating layers of convolutional sparse coding and max pooling. When trained on natural images, the layers ...
ICIP
2002
IEEE
16 years 1 days ago
2002
IEEE
We propose a new scheme, named contourlet, that provides a flexible multiresolution, local and directional image expansion. The contourlet transform is realized efficiently via a ...
SCIA
2005
Springer
15 years 4 months ago
2005
Springer
Abstract. Filter networks, i.e. decomposition of a filter set into a layered structure of sparse subfilters has been proven successful for e.g. efficient convolution using finit...
67
Voted
PG
2002
IEEE
15 years 3 months ago
2002
IEEE
We present the light field oracle, a novel mathematical concept for the acquisition, processing and representation of light fields. We first compute a hierarchical representati...
77
Voted
TIP
2002
14 years 10 months ago
2002
Abstract--The main contribution of this work is a new paradigm for image representation and image compression. We describe a new multilayered representation technique for images. A...