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Assessment of the Performance of a Commercial Spectral Sensor for Portable and Cost-Effective Multispectral Applications

This study evaluates the AS7265x spectral sensor board versus a reference spectrometer (USB2000+, Ocean Optics), focusing on performance, reflectance measurements, and color determination. The experimental setup uses a standard free ColorChecker chart and skin samples to represent various multispect...

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Main Authors:	Perez-Avila, Antonio J., Mesa-Simon, Miguel A., Martinez-Olmos, Antonio, Palma, Alberto J., Lopez-Ruiz, Nuria
Format:	Conference Proceeding
Language:	English
Subjects:	AS7265x Image color analysis Lighting multiespectral Oceans Optical variables measurement portable instrumentation Reflectivity Reliability Sea measurements Signal to noise ratio Skin spectrometer USB2000+ Spectrometer
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creator	Perez-Avila, Antonio J. Mesa-Simon, Miguel A. Martinez-Olmos, Antonio Palma, Alberto J. Lopez-Ruiz, Nuria
description	This study evaluates the AS7265x spectral sensor board versus a reference spectrometer (USB2000+, Ocean Optics), focusing on performance, reflectance measurements, and color determination. The experimental setup uses a standard free ColorChecker chart and skin samples to represent various multispectral applications. The AS7265x demonstrates outstanding system specifications, including superior signal-to-noise ratio (SNR) compared to the benchtop spectrometer. Reflectance spectra comparisons reveal a high level of agreement, with an RMSE below 0.1 in the spectral range of 410-940 nm. Additionally, a bias correction model, derived from the differences between the spectra of both systems, has been applied to the AS7265x data. This correction has significantly improved the RMSE and GFC metrics, which assess spectral discrepancies. Spectra are also analyzed in terms of color using the CIEDE2000 standard, showing notable improvements after the bias correction.
doi_str_mv	10.1109/DSD64264.2024.00067
format	conference_proceeding
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subjects	AS7265x Image color analysis Lighting multiespectral Oceans Optical variables measurement portable instrumentation Reflectivity Reliability Sea measurements Signal to noise ratio Skin spectrometer USB2000+ Spectrometer
title	Assessment of the Performance of a Commercial Spectral Sensor for Portable and Cost-Effective Multispectral Applications
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