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Type: Artigo de periódico
Title: Desenvolvimento de um algoritmo para identificação e correção de spikes em espectroscopia Raman de imagem
Title Alternative: Development of an algorithm for identification and correction of spikes in Raman imaging spectroscopy
Author: Sabin, Guilherme Post
Souza, André Marcelo de
Breitkreitz, Márcia Cristina
Poppi, Ronei Jesus
Abstract: Raman imaging spectroscopy is a highly useful analytical tool that provides spatial and spectral information on a sample. However, CCD detectors used in dispersive instruments present the drawback of being sensitive to cosmic rays, giving rise to spikes in Raman spectra. Spikes influence variance structures and must be removed prior to the use of multivariate techniques. A new algorithm for correction of spikes in Raman imaging was developed using an approach based on comparison of nearest neighbor pixels. The algorithm showed characteristics including simplicity, rapidity, selectivity and high quality in spike removal from hyperspectral images.
Subject: Raman imaging
spikes filter
algorithm development
Editor: Sociedade Brasileira de Química
Citation: Química Nova. Sociedade Brasileira de Química, v. 35, n. 3, p. 612-615, 2012.
Rights: aberto
Identifier DOI: 10.1590/S0100-40422012000300030
Date Issue: 1-Jan-2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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