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IROS
2007
IEEE
109views Robotics» more  IROS 2007»
12 years 3 months ago
A new approach to segmentation of 2D range scans into linear regions
— Toward obtaining a compact and multiresolution representation of 2D range scans, a wavelet framework is proposed for encoding an orientation measure called Running Angle (RA). ...
Ahad Harati, Roland Siegwart
ICMCS
2008
IEEE
201views Multimedia» more  ICMCS 2008»
12 years 4 months ago
Logitboost weka classifier speech segmentation
Segmenting the speech signals on the basis of time-frequency analysis is the most natural approach. Boundaries are located in places where energy of some frequency subband rapidly...
Bartosz Ziólko, Suresh Manandhar, Richard C...
ICHIT
2009
Springer
12 years 4 months ago
ECG signal compression using 2D wavelet foveation
Foveation principles suggested by natural vision systems enable the construction of a proper mask that may modulate the coefficients given by the Discrete Wavelet Transform of an ...
Iulian B. Ciocoiu
SIGMOD
2005
ACM
154views Database» more  SIGMOD 2005»
12 years 9 months ago
SHIFT-SPLIT: I/O Efficient Maintenance of Wavelet-Transformed Multidimensional Data
The Discrete Wavelet Transform is a proven tool for a wide range of database applications. However, despite broad acceptance, some of its properties have not been fully explored a...
Mehrdad Jahangiri, Dimitris Sacharidis, Cyrus Shah...
ISBI
2004
IEEE
12 years 10 months ago
Speckle Reduction on Ultrasound Image by Variational Methods and Adaptive Lagrangian Multipliers
Ultrasound images are corrupted by a multiplicative noise, the speckle, which makes high level analysis difficult. Within each resolution cell a number of elementary scatterers re...
Arnaud Ogier, Pierre Hellier, Christian Barillot
ICDE
1999
IEEE
209views Database» more  ICDE 1999»
12 years 11 months ago
Efficient Time Series Matching by Wavelets
Time series stored as feature vectors can be indexed by multidimensional index trees like R-Trees for fast retrieval. Due to the dimensionality curse problem, transformations are ...
Kin-pong Chan, Ada Wai-Chee Fu
ICIP
2001
IEEE
12 years 11 months ago
A directional, shift insensitive, low-redundancy, wavelet transform
Shift variance and poor directional selectivity, two major disadvantages of the discrete wavelet transform, have previously been circumvented either by using highly redundant, non...
Rutger L. van Spaendonck, Felix C. A. Fernandes, S...
ICIP
2002
IEEE
12 years 11 months ago
Multiresolution 3D mesh compression
In this paper, we propose an efficient low complexity compression scheme for densely sampled irregular 3D meshes. This scheme is based on 3D multiresolution analysis (3D Discrete ...
Frédéric Payan, Marc Antonini
ICIP
2002
IEEE
12 years 11 months ago
Image restoration under wavelet-domain priors: an expectation-maximization approach
This paper describes an expectation-maximization (EM) algorithm for wavelet-based image restoration (deconvolution). The observed image is assumed to be a convolved (e.g., blurred...
Robert D. Nowak, Mário A. T. Figueiredo
ICIP
2003
IEEE
12 years 11 months ago
3D multiresolution context-based coding for geometry compression
In this paper, we propose a 3D geometry compression technique for densely sampled surface meshes. Based on a 3D multiresolution analysis (performed by a 3D Discrete Wavelet Transf...
Frédéric Payan, Marc Antonini
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