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VCIP
2003
15 years 7 months ago
Superresolution images reconstructed from aliased images
In this paper, we present a simple method to almost quadruple the spatial resolution of aliased images. From a set of four low resolution, undersampled and shifted images, a new i...
Patrick Vandewalle, Sabine Süsstrunk, Martin ...
RSA
2011
89views more  RSA 2011»
15 years 1 months ago
Excluding induced subgraphs: Critical graphs
Determining the cardinality and describing the structure of H-free graphs is wellinvestigated for many graphs H. In the nineties, Prömel and Steger proved that for a graph H with...
József Balogh, Jane Butterfield
MST
2010
101views more  MST 2010»
15 years 4 months ago
Non-Uniform Reductions
Reductions and completeness notions form the heart of computational complexity theory. Recently non-uniform reductions have been naturally introduced in a variety of settings conc...
Harry Buhrman, Benjamin J. Hescott, Steven Homer, ...
ECCC
2002
68views more  ECCC 2002»
15 years 6 months ago
Bi-Immunity Separates Strong NP-Completeness Notions
We prove that if for some > 0, NP contains a set that is DTIME(2n )-bi-immune, then NP contains a set that is 2-Turing complete for NP (hence 3-truth-table complete) but not 1-t...
Aduri Pavan, Alan L. Selman
CVPR
2005
IEEE
16 years 8 months ago
Shape from Shading: A Well-Posed Problem?
Shape From Shading is known to be an ill-posed problem. We show in this paper that if we model the problem in a different way than it is usually done, more precisely by taking int...
Emmanuel Prados, Olivier D. Faugeras