Patent ID: 7002143
Filing Date: 2006-02-21
Classification: G06K,H01J

Abstract:
1. A spectral processing method for compensating a plurality of sequential spectra and profiles derived therefrom for effects of drift of data along an independent variable axis, comprising: transforming a plurality of sequential spectra obtained from a spectrometer to provide an array of row vectors compensated for effects of drift of data along an independent variable axis, wherein the array of row vectors compensated for effects of drift of data along the independent variable axis constitutes a drift-compensated array; performing a principal-factor determination on the drift-compensated array to provide a set of principal factors compensated for effects of drift of data along the independent variable axis; and generating, from a profile trajectory of the row vectors compensated for effects of drift of data along the independent variable axis lying within a space of principal factors compensated for effects of drift of data along the independent variable axis, scaled target-factor profiles compensated for effects of drift of data along the independent variable axis.