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ICASSP
2009
IEEE
14 years 2 months ago
Voronoi cell shaping for feature selection with discrete HMMs
In this paper, we introduce a novel vector quantization (VQ) scheme for distributing the quantization error equally among the quantized dimensions. Afterwards, the proposed VQ sch...
Joachim Schenk, Gerhard Rigoll
ICASSP
2009
IEEE
14 years 2 months ago
Wrapping snakes for improved lip segmentation
A key step in the process of lip-reading is determining the shape of the speaker’s lips. This has previously been achieved through an energy method known as “snakes”, howeve...
Matthew Ramage, Euan Lindsay
ICASSP
2009
IEEE
14 years 2 months ago
Using the scaling ambiguity for filter shortening in convolutive blind source separation
In this paper, we propose to use the scaling ambiguity of convolutive blind source separation for shortening the unmixing filters. An often used approach for separating convoluti...
Radoslaw Mazur, Alfred Mertins
ICASSP
2009
IEEE
14 years 2 months ago
Particle filtering for Quantized Innovations
In this paper, we re-examine the recently proposed distributed state estimators based on quantized innovations. It is widely believed that the error covariance of the Quantized In...
Ravi Teja Sukhavasi, Babak Hassibi
ICASSP
2009
IEEE
14 years 2 months ago
Product-HMMs for automatic sign language recognition
We address multistream sign language recognition and focus on efficient multistream integration schemes. Alternative approaches are investigated and the application of Product-HM...
Stavros Theodorakis, Athanassios Katsamanis, Petro...