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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Bibliographic Details
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
Online Access:Request full text
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Description
Summary: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.
ISSN:2771-2508
DOI:10.1109/DSD64264.2024.00067