SPC-Threshold: Uma Proposta de Limiarização para Filtragem Adaptativa de Sinais
DOI:
https://doi.org/10.5540/tema.2010.011.02.0121Abstract
Neste trabalho é apresentada uma proposta de limiarização para filtragem adaptativa de sinais por meio do truncamento dos coeficientes wavelets do sinal analisado. O parâmetro de corte para limiarização é estimado por analogia à aplicação dos gráficos de controle, que é uma ferramenta do controle estatístico de processo (SPC - Statistical Process Control ). O método proposto, denominado SPC-Threshold, é formulado e para sua validação são realizadas simulações computacionais. Os resultados do SPC-Threshold são comparados com aqueles obtidos com limiares de truncamento já consagrados, como o Universal Threshold, o SURE Threshold e suas variações.References
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