HADAMARD-TRANSFORM AND FOURIER-TRANSFORM INFRARED IMAGING AND SPECTROMETRY

Citation
Mk. Bellamy et al., HADAMARD-TRANSFORM AND FOURIER-TRANSFORM INFRARED IMAGING AND SPECTROMETRY, Mikrochimica acta, 1997, pp. 759-761
Citations number
3
Categorie Soggetti
Chemistry Analytical
Journal title
ISSN journal
00263672
Year of publication
1997
Supplement
14
Pages
759 - 761
Database
ISI
SICI code
0026-3672(1997):<759:HAFIIA>2.0.ZU;2-0
Abstract
A moving (mechanical) two-dimensional Hadamard encoding mask has been employed with a Fourier-transform infrared (FT-IR) spectrometer to com bine imaging in two spatial dimensions with the spectral dimension as a form of three-dimensional spectrometry in the mid-infrared and near- infrared spectral regions. Chemical images at chosen wavenumbers and m id-infrared spectra of individual pixel positions in the image have be en obtained with acceptable signal-to-noise ratios and reasonable data -acquisition times.