This paper discusses a linear time invariant (LTI) systems approach to signal enhancement via projective subspace techniques. It provides closed form expressions for the frequency response of data adaptive finite impulse response eigenfilters. An illustrative example using speech enhancement is also presented. ; Este artigo apresenta a aplicação da teoria de sistemas lineares invariantes no tempo...
This paper discusses the application of Principal Component Analysis (PCA) in face recognition systems. PCA subspace models are commonly used to perform image dimensionreduction before the input of the classifier. More recently, PCA subspace models are estimated for one face and the comparison of models via a subspace distance allows face identification.Both strategies of applying PCA were compared for a reposi...
2007
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