Sciweavers

ICASSP
2011
IEEE
13 years 3 months ago
Compressed sensing based method for ECG compression
Compressive sensing (CS) is a new approach for the acquisition and recovery of sparse signals that enables sampling rates significantly below the classical Nyquist rate. Based on...
Luisa F. Polania, Rafael E. Carrillo, Manuel Blanc...
ICASSP
2011
IEEE
13 years 3 months ago
Improved DCT coefficient analysis for forgery localization in JPEG images
In this paper, we propose a statistical test to discriminate between original and forged regions in JPEG images, under the hypothesis that the former are doubly compressed while t...
Tiziano Bianchi, Alessia De Rosa, Alessandro Piva
ICASSP
2011
IEEE
13 years 3 months ago
A new metric for VQ-based speech enhancement and separation
Speech enhancement and separation algorithms frequently employ two-stage processing schemes, where the signal is first mapped to an intermediate low-dimensional parametric descri...
Mads Græsbøll Christensen, Pejman Mow...
ICASSP
2011
IEEE
13 years 3 months ago
Image inpainting-based edge enhancement using the eikonal equation
This paper proposes a novel application of image inpainting techniques for the edge enhancement problems in image deblurring and denoising. The edge enhancement effect is achieved...
Zhaozhong Wang
ICASSP
2011
IEEE
13 years 3 months ago
Offending frequency suppression with a reset algorithm to improve feedback cancellation in digital hearing aids
Acoustic feedback limits the gain provided by hearing aids. Digital hearing aids identify acoustic feedback signals and cancel them continuously in a closed loop with an adaptive ...
Ashutosh Pandey, V. John Mathews
ICASSP
2011
IEEE
13 years 3 months ago
On optimal precoding in wireless multicast systems
Precoding has been extensively studied for point-to-point communications, including the problems of constructing the precoding codebook and selecting the best precoder. This paper...
Yiyue Wu, Haipeng Zheng, A. Robert Calderbank, San...
ICASSP
2011
IEEE
13 years 3 months ago
Directionality-based speech enhancement for hearing aids
In this work we describe methods for using the directionality of sound energy as a criterion to estimate single- and multichannel linear filters for suppression of diffuse noise ...
John Woodruff, DeLiang Wang
ICASSP
2011
IEEE
13 years 3 months ago
On the success of network inference using a markov routing model
In this paper we discuss why a simple network topology inference algorithm based on network co-occurrence measurements and a Markov random walk model for routing enables perfect t...
Laura Balzano, Robert Nowak, Matthew Roughan
ICASSP
2011
IEEE
13 years 3 months ago
A unified framework for GLRT-based spectrum sensing of signals with covariance matrices with known eigenvalue multiplicities
In this paper, we create a unified framework for spectrum sensing of signals which have covariance matrices with known eigenvalue multiplicities. We derive the generalized likeli...
Erik Axell, Erik G. Larsson
ICASSP
2011
IEEE
13 years 3 months ago
Asymptotic performance of distributed detection over random networks
Dragana Bajovic, Dusan Jakovetic, João Xavi...