Sciweavers

ICASSP
2011
IEEE
13 years 8 days ago
Single-carrier systems with MMSE linear equalizers: Performance degradation due to channel and CFO estimation errors
We assess the impact of the channel and carrier frequency offset (CFO) estimation errors on the performance of singlecarrier systems with MMSE linear equalizers. Performance degra...
Athanasios P. Liavas, Despoina Tsipouridou
ICASSP
2011
IEEE
13 years 8 days ago
Multi-cue based multi-target tracking using online random forests
Discriminative tracking has become popular tracking methods due to their descriptive power for foreground/background separation. Among these methods, online random forest is recen...
Xinchu Shi, Xiaoqin Zhang, Yang Liu, Weiming Hu, H...
ICASSP
2011
IEEE
13 years 8 days ago
Revisiting adaptive least-squares estimation and application to online sparse signal recovery
This paper presents a novel time-adaptive estimation technique by revisiting the classical Wiener-Hopf equation. Any convex and not necessarily differentiable function can be used...
Konstantinos Slavakis, Yannis Kopsinis, Sergios Th...
ICASSP
2011
IEEE
13 years 8 days ago
Filter design with secrecy constraints: The multiple-input multiple-output Gaussian wiretap channel with zero forcing receive fi
This paper considers the problem of lter design with secrecy constraints, where two legitimate parties (Alice and Bob) communicate in the presence of an eavesdropper (Eve), over a...
Hugo Reboredo, Vinay Uday Prabhu, Miguel R. D. Rod...
ICASSP
2011
IEEE
13 years 8 days ago
Hierarchical audio classification using cepstral modulation ratio regressions based on Legendre polynomials
In this work we present a scalable feature set which is obtained by fitting orthogonal polynomials to the normalized modulation spectrum of cepstral coefficients and which can b...
Anil M. Nagathil, Peter Gottel, Rainer Martin
ICASSP
2011
IEEE
13 years 8 days ago
Full-covariance UBM and heavy-tailed PLDA in i-vector speaker verification
In this paper, we describe recent progress in i-vector based speaker verification. The use of universal background models (UBM) with full-covariance matrices is suggested and tho...
Pavel Matejka, Ondrej Glembek, Fabio Castaldo, M. ...
ICASSP
2011
IEEE
13 years 8 days ago
A nativeness classifier for TED Talks
This paper presents a nativeness classifier for English. The detector was developed and tested with TED Talks collected from the web, where the major non-native cues are in terms...
Jose Lopes, Isabel Trancoso, Alberto Abad
ICASSP
2011
IEEE
13 years 8 days ago
Voxel-based Viterbi Active Speaker Tracking (V-VAST) with best view selection for video lecture post-production
An automated system is presented for reducing a multi-view lecture recording into a single view video containing a best view summary of active speakers. The system uses skin color...
Damien Kelly, Anil Kokaram, Frank Boland
ICASSP
2011
IEEE
13 years 8 days ago
Online Kernel SVM for real-time fMRI brain state prediction
The Support Vector Machine (SVM) methodology is an effective, supervised, machine learning method that gives stateof-the-art performance for brain state classification from funct...
Yongxin Taylor Xi, Hao Xu, Ray Lee, Peter J. Ramad...
ICASSP
2011
IEEE
13 years 8 days ago
STFT-based denoising of elastograms
In ultrasound elastography, axial strains of the examined tissue are calculated by the differentiation of the measured axial displacements. However, the results become obscured as...
Tsz-Kin Hon, Suba Raman Subramaniam, Apostolos Geo...