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- W2037845087 abstract "Long-wave infrared (LWIR) hyperspectral imagers (HSI) image a scene by collecting high-resolution spectra at each pixel. The data are similar to a camera image but have a large number of narrow spectral bands rather than the familiar broad three bands of red-green-blue in a traditional digital camera. Materials in LWIR are emissive (rather than reflective) and have unique spectra that can be used for material detection and identification. The measured spectra are a convolution of the material spectra (emissivity), the black body temperature (Planck curve), other interacting environmental spectral sources, and measurement error. One approach to material identification is temperature-emissivity separation (TES), which separates or deconvolves the material spectra from the temperature curve. To accomplish this task, we develop a unique flexible model which combines the mathematical model of the physical processes within a Bayesian nonparametric framework. In addition to offering interpretable estimates of model parameters, this model is able to identify material emissivity spectra and cluster pixels into appropriate material groups. We demonstrate our method using both a synthetic and measured dataset. The online supplementary material contains an appendix of the details of the sampling algorithm." @default.
- W2037845087 created "2016-06-24" @default.
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- W2037845087 date "2014-04-03" @default.
- W2037845087 modified "2023-09-24" @default.
- W2037845087 title "A Bayesian Nonparametric Model for Temperature-Emissivity Separation of Long-Wave Hyperspectral Images" @default.
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- W2037845087 doi "https://doi.org/10.1080/00401706.2013.869262" @default.
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