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Pomerantsev AL, Rodionova OY, Skvortsov AN. Diffuse Reflectance Spectroscopy of Hidden Objects. Part II: Recovery of a Target Spectrum. Appl Spectrosc. 2017;71(8):1773-1784doi: 10.1177/0003702817695288.
Pomerantsev, A. L., Rodionova, O. Y., & Skvortsov, A. N. (2017). Diffuse Reflectance Spectroscopy of Hidden Objects. Part II: Recovery of a Target Spectrum. Applied spectroscopy, 71(8), 1773-1784. https://doi.org/10.1177/0003702817695288
Pomerantsev, Alexey L, et al. "Diffuse Reflectance Spectroscopy of Hidden Objects. Part II: Recovery of a Target Spectrum." Applied spectroscopy vol. 71,8 (2017): 1773-1784. doi: https://doi.org/10.1177/0003702817695288
Pomerantsev AL, Rodionova OY, Skvortsov AN. Diffuse Reflectance Spectroscopy of Hidden Objects. Part II: Recovery of a Target Spectrum. Appl Spectrosc. 2017 Aug;71(8):1773-1784. doi: 10.1177/0003702817695288. Epub 2017 Apr 04. PMID: 28374600.
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Appl Spectrosc. 2017 Aug;71(8):1773-1784. doi: 10.1177/0003702817695288. Epub 2017 Apr 04.

Diffuse Reflectance Spectroscopy of Hidden Objects. Part II: Recovery of a Target Spectrum.

Applied spectroscopy

Alexey L Pomerantsev, Oxana Ye Rodionova, Alexej N Skvortsov

Affiliations

  1. 1 Semenov Institute of Chemical Physics RAS, Moscow, Russia.
  2. 2 Branch of Institute of Natural and Technical Systems RAS, Sochi, Russia.
  3. 3 Peter the Great St Petersburg State Polytechnic University, St. Petersburg, Russia.

PMID: 28374600 DOI: 10.1177/0003702817695288

Abstract

In this study, we consider the reconstruction of a diffuse reflectance near-infrared spectrum of an object (target spectrum) in case the object is covered by an interfering absorbing and scattering layer. Recovery is performed using a new empirical method, which was developed in our previous study. We focus on a system, which consists of several layers of polyethylene (PE) film and underlayer objects with different spectral features. The spectral contribution of the interfering layer is modeled by a three-component two-parameter multivariate curve resolution (MCR) model, which was built and calibrated using spectrally flat objects. We show that this model is applicable to real objects with non-uniform spectra. Ultimately, the target spectrum can be reconstructed from a single spectrum of the covered target. With calculation methods, we are able to recover quite accurately the spectrum of a target even when the object is covered by 0.7 mm of PE.

Keywords: MCR; Near-infrared diffuse reflectance spectroscopy; multilayer systems; multivariate curve resolution; polyethylene films; reflectance; scattering; spectrum recovery

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