Artículos de revistas
Desenvolvimento de um algoritmo para identificação e correção de spikes em espectroscopia Raman de imagem
Development of an algorithm for identification and correction of spikes in Raman imaging spectroscopy
Registro en:
Química Nova. Sociedade Brasileira de Química, v. 35, n. 3, p. 612-615, 2012.
0100-4042
S0100-40422012000300030
10.1590/S0100-40422012000300030
Autor
Sabin, Guilherme Post
Souza, André Marcelo de
Breitkreitz, Márcia Cristina
Poppi, Ronei Jesus
Institución
Resumen
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. 612 615 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)