Parametric Model of Absorbance Spectra for NIR and SWIR Dyes and Dye-Mixtures in Fabric Using Gaussian Functions
Abstract
This study describes parametric modeling of near-infrared (NIR, 0.7-0.9 micrometer) and shortwave infrared (SWIR, 0.9-1.7 micrometer) absorbance spectra, which is for optimizing NIR-SWIR reflectance of dyed fabrics with respect to given illuminations and background environments. The parametric models are linear combinations of gaussian functions, which are for modeling dyes in fabric whose absorption spectra span the NIR/SWIR spectral range. In general, decomposition of an absorbance spectrum in terms of linear combinations of gaussian functions is not unique. This suggests investigating what are optimal linear combinations of gaussian functions for modeling given spectra. Prototype modeling is applied to NIR/SWIR absorbing dyes, and their mixtures, in fabric samples, which consist of a cotton blend. The results of this study demonstrate parametric modeling using linear combinations of gaussian functions for simulating NIR/SWIR absorbance spectra, which are for variable dye and dye blend concentrations in fabrics.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 08, 2019
- Accession Number
- AD1073821
Entities
People
- Rachel Viger
- Samuel G. Lambrakos
- Scott Ramsey
- Troy Mayo
Organizations
- United States Naval Research Laboratory