the effects of spectral pretreatments on chemometric analyses of soil profiles using laboratory imaging spectroscopy
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2012
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Abstract
Laboratory imaging spectroscopy can be used to explore physical and chemical variations in soil profiles on a submillimetre scale. We used a hyperspectral scanner in the 400 to 1000 nm spectral range mounted in a laboratory frame to record images of two soil cores. Samples from these cores were chemically analyzed, and spectra of the sampled regions were used to train chemometric PLS regression models. With these models detailed maps of the elemental concentrations in the soil cores could be produced. Eight different spectral pretreatments were applied to the sample spectra and to the resulting images in order to explore the influence of these pre-treatments on the estimation of elemental concentrations. We found that spectral preprocessing has a minor influence on chemometry results when powerful regression algorithms like PLSR are used.
| Reference Key |
buddenbaum2012appliedthe
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| Authors | ;Henning Buddenbaum;Markus Steffens |
| Journal | international journal of electrochemistry |
| Year | 2012 |
| DOI |
10.1155/2012/274903
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