[ABE-L] Seminarios em High Dimensional Data

[Ronaldo Dias]

Prezados(as)

Estamos de volta com nossos seminários em Análise de Dados em Alta Dimensão
( <AD,AD> )
Todos os interessados são muito bem vindos.

Quarta-feira, as 13hs, sala 221.
Nesta semana teremos.

Título: Modeling Textile Images with Markov Random Fields

Abstract:
When new textile dyeing technologies are developed, evaluating the quality
of these techniques involves measuring the resulting color homogeneity
using digital images. The presence of a texture effect caused by the fabric
creates a sophisticated dependence structure in pixels coloring. Fourier
transform is used with regularization techniques to remove the texture
signal from the image. Images are then modeled as a hidden Markov random
field and Fourier basis as covariates, allowing an entropy-based evaluation
of color homogeneity using the filtered signal that corresponds to the
dyeing process only.

Keywords: Markov random fields, hidden random fields, Fourier transform,
variable
​ ​
selection, regularization.


-- 
Ronaldo Dias
Professor
Dept. of Statistics-IMECC, UNICAMP
www.ime.unicamp.br/~dias
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