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» On sparse signal representations
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ICIP
2009
IEEE
15 years 4 months ago
The discrete orthonormal Stockwell transform for image restoration
This paper describes an automated image restoration algorithm. The technique is based on the Stockwell transform (ST) and its discrete version, the discrete orthonormal Stockwell ...
Yanwei Wang, Jeff Orchard
DAGM
2007
Springer
16 years 21 days ago
View-Based Robot Localization Using Spherical Harmonics: Concept and First Experimental Results
Robot self-localization using a hemispherical camera system can be done without correspondences. We present a view-based approach using view descriptors, which enables us to effici...
Holger Friedrich, David Dederscheck, Kai Krajsek, ...
ICASSP
2010
IEEE
15 years 6 months ago
Near-field adaptive beamforming and source localization in the spacetime frequency domain
We revisit the topics of near-field adaptive beamforming and source localization following an alternative approach based on a spatiotemporal spectral representation of the acoust...
Francisco Pinto, Martin Vetterli
ICASSP
2011
IEEE
14 years 10 months ago
Applications of short space-time fourier analysis in digital acoustics
This paper presents a signal processing tool for analyzing and manipulating digitized acoustic wave fields, based on a spatio-temporal extension of the time–frequency represent...
Francisco Pinto, Martin Vetterli
ICASSP
2011
IEEE
14 years 10 months ago
Approximation of pattern transformation manifolds with parametric dictionaries
The construction of low-dimensional models explaining highdimensional signal observations provides concise and efficient data representations. In this paper, we focus on pattern ...
Elif Vural, Pascal Frossard