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Dive into the research topics where Vit Libal is active.

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Featured researches published by Vit Libal.


international conference on acoustics, speech, and signal processing | 2010

Joint estimation of DOA and speech based on EM beamforming

Lae-Hoon Kim; Mark Hasegawa-Johnson; Gerasimos Potamianos; Vit Libal

In this paper, we propose a multi-microphone joint optimal estimation of the direction of arrival (DOA) and the source speech signal through newly introduced EM beamforming. This produces a posterior PDF for the DOA, based only on the reliable speech spectrum. By maximizing over the posterior PDF of the DOA, we achieve maximum a posteriori DOA estimation. After convergence, the estimated source spectrum through weighted sum in the Bayesian sense is a maximum likelihood estimate (MLE). This is a sufficient statistic for minimum mean square error (MMSE) optimal estimation using a subsequent single channel MMSE filter.


Archive | 2010

Detecting retail shrinkage using behavioral analytics

Vit Libal; Jana Trojanova; Lalitha M. Eswara


Archive | 2015

System and method of anomaly detection with categorical attributes

Vit Libal; Pavel Vacha; Valerie Guralnik


Archive | 2013

Bootstrapping access models in the absence of training data

Valerie Guralnik; Vit Libal


Archive | 2015

OPERATING A SURVEILLANCE SYSTEM

Henry Chen; Hao Bai; Michelle Raymond; Vit Libal; Jan Jelinek; Valerie Guralnik


Archive | 2014

Detecting camera conditions to initiate camera maintenance

Vit Libal; Pavel Vacha; Axel Reichert


Archive | 2013

STRUCTURED EVENT LOG DATA ENTRY FROM OPERATOR REVIEWED PROPOSED TEXT PATTERNS

Karel Macek; Vit Libal; James M. Schreder


Archive | 2011

Monitoring access to a location

Vit Libal; Valerie Guralnik


Archive | 2011

ACQUIRING STATISTICAL ACCESS MODELS

Vit Libal; Valerie Guralnik


Archive | 2014

System and method of anomaly detection

Pavel Vacha; Vit Libal; Valerie Guralnik

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