Structured Laser Illumination Planar Imaging Based Classification of Ground Coffee Using Multivariate Chemometric Analysis

Bagui, Olivier K.; Kaduki, Kenneth A.; Berrocal, Edouard; Zoueu, Jérémie T.

doi:10.5539/apr.v8n3p32

Cited by 5 publications

(4 citation statements)

References 12 publications

(10 reference statements)

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“…Kristensson and coworkers have also used the same idea in the context of imaging of molar extinction coefficients of turbid media [13]. And most recently Olivier K. Bagui et al have used it for classifying groups of coffee [14].…”

Section: This Technique Named Slipi (Structured Illumination Laser Plmentioning

confidence: 99%

See 1 more Smart Citation

Structured Imagery Processing Strategies for Spectroscopic Measurement in Dense Solutions

Koffi¹,

Regnima²,

Bosson³

et al. 2017

OJAppS

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Absorbance measurement in dense media via conventional optical spectroscopy techniques leads to inaccurate results. This is mainly due to multiple scattering phenomena that contribute to the overall light extinction in the interrogated sample. This limitation imposes the use of dilute solutions for absorption spectroscopy. However, depending on the polarity of the solvent used, the absorption spectrum may vary over a given solution. Structured illumination technique offers an alternative to this problem, and provides the ability to calculate in-situ optical properties in dense media. In this paper, we propose two processing methods applied to images acquired by structured laser illumination planar imaging (SLIPI) technique to extract extinction coefficients µ of probed solutions: The first is based on the implementation of principal component analysis (PCA) and the second, on the calculation of Mean Value. In practice, two kinds of studies were carried out: one quantitative set of measurements within chlorophyll liquid solutions and a second set with concentrated coffee solutions, with controlled proportion and concentrations for each sample. These two proposed analytical techniques are advantageous because they are very easy to implement and provide a much simpler alternative to the previous one. Both methods offer satisfactory results, similar to those obtained with the original method which is based on 1D Fourier transform.

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Section: This Technique Named Slipi (Structured Illumination Laser Plmentioning

confidence: 99%

“…One can extract the amplitude of the modulation from a modulated image using Equations (6)- (14). The modulated component A λ , reflects the exponential decay of the single-scattered light along the cross-sectional width of the cuvette.…”

Section: The Single-phase Slipi Approachmentioning

confidence: 99%

Structured Imagery Processing Strategies for Spectroscopic Measurement in Dense Solutions

Koffi¹,

Regnima²,

Bosson³

et al. 2017

OJAppS

View full text Add to dashboard Cite

show abstract

“…It was also used by Bagui et al. to classify the quality of coffee [10]. From this technique, we have recently developed image processing strategies for spectroscopic measurements in dense solutions based on Principal Component Analysis (PCA) [11].…”

Section: Introductionmentioning

confidence: 99%

“…This technique has already proven its effectiveness in classifying the quality of mineral oils, according to Regnima et al [9]. It was also used by Bagui et al to classify the quality of coffee [10]. From this technique, we have recently developed image processing strategies for spectroscopic measurements in dense solutions based on Principal Component Analysis (PCA) [11].…”

Section: Introductionmentioning

confidence: 99%

Using structured laser illumination planar imaging (SLIPI) as a new technique to monitor the degradation of biodegradable oils in electrical power transformers

Koffi

Kassi

Koné

et al. 2022

IET Generation Trans & Dist

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The aging process of the insulating oils of an electrical transformer is initiated as soon as the transformer is put into service. The quality of these oils must therefore be rigorously evaluated to have reliable and exploitable data for decision‐making. In general, the decision is to continue monitoring, reclaiming/regenerating, or replacing the oil in extreme cases. Thus, early diagnosis of power transformer oils helps prevent potential breakdowns that could considerably impact the electrical energy transmission and distribution network. This research used an imaging technique called SLIPI (Structured Laser Illumination Planar Imaging) to accurately determine the extinction coefficient in different samples of optically dense biodegradable oils (natural and synthetic esters). The variation in the extinction coefficient as a function of the aging of these biodegradable oils under test has been investigated. The results indicate that the SLIPI is reliable as a diagnostic tool for biodegradable oils in power transformers. This technique could therefore be an alternative solution to the conventional monitoring methods.

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Monitoring power transformers oils deterioration using structured laser illumination planar imaging

et al. 2018

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Structured Laser Illumination Planar Imaging Based Classification of Ground Coffee Using Multivariate Chemometric Analysis

Cited by 5 publications

References 12 publications

Structured Imagery Processing Strategies for Spectroscopic Measurement in Dense Solutions

Structured Imagery Processing Strategies for Spectroscopic Measurement in Dense Solutions

Using structured laser illumination planar imaging (SLIPI) as a new technique to monitor the degradation of biodegradable oils in electrical power transformers

Monitoring power transformers oils deterioration using structured laser illumination planar imaging

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