Flame spectra-temperature estimation based on a color imaging camera and a spectral reconstruction technique

In this paper a low-cost, practical pixel-based flame spectrum and temperature estimation system based on flame color images is proposed. A spectral resolution of ∼ 0.4 nm is achieved with an optical system formed by a color camera, a linear model, a flame's spectral training data, and a spectr...

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Veröffentlicht in:	Applied optics (2004) 2014-10, Vol.53 (28), p.6351-6361
Hauptverfasser:	Toro N, Carlos, Arias P, Luis, Torres, Sergio, Sbarbaro, Daniel
Format:	Artikel
Sprache:	eng
Schlagworte:	Cameras Color Error detection Imaging Reconstruction Spectra Spectral lines Spectrometers
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container_title	Applied optics (2004)
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creator	Toro N, Carlos Arias P, Luis Torres, Sergio Sbarbaro, Daniel
description	In this paper a low-cost, practical pixel-based flame spectrum and temperature estimation system based on flame color images is proposed. A spectral resolution of ∼ 0.4 nm is achieved with an optical system formed by a color camera, a linear model, a flame's spectral training data, and a spectral reconstruction procedure. As a proof of concept, the estimated spectra are compared to local measurements performed with a commercial spectrometer. In order to estimate the absolute flame-temperature maps, two radiometric images at different wavelengths are reconstructed and the two-color pyrometry method is applied. Experiments show errors of about 2.0% over the estimated temperature, making this system a practical tool for flame sensing in combustion-process monitoring.
doi_str_mv	10.1364/AO.53.006351
format	Article
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subjects	Cameras Color Error detection Imaging Reconstruction Spectra Spectral lines Spectrometers
title	Flame spectra-temperature estimation based on a color imaging camera and a spectral reconstruction technique
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