Evaluation of a simple image‐based tool to quantify facial erythema in rosacea during treatment

Logger, Jade G M; Jong, E.M.G.J. de; Driessen, R.J.B.; Erp, P.E.J. van

doi:10.1111/srt.12878

Cited by 13 publications

(20 citation statements)

References 29 publications

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“…In this study, the images were captured in

10

‐minute intervals from the surface of the sample located in the middle of the tray. The RGB sample images were processed using ImageJ image processing program (Logger et al, 2020). ImageJ converted the captured images of

RGB

color space to three different images representing each value of the

L^{*} a^{*} b^{*}

color space.…”

Section: Materials and Methodologymentioning

confidence: 99%

Design and fabrication of catalytic infrared fruit dryer to evaluate its performance in the bananas drying process

Hosseinalipour

Zaghari²

2022

Food Processing Preservation

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The present research was aimed to investigate the effects of utilizing catalytic infrared (CIR) heaters and their combination with convective heat transfer (Combined method) on the drying characteristics of bananas. The CIR and combined drying of 50.25emmm samples were conducted at various temperatures (60, 70, and 80°C). The drying kinetics, mathematical modeling, and color change in samples were investigated. The results showed that the combined method would prolong the drying process compared to the CIR drying up to 31%. Among the seven investigated thin‐layer drying models, the two‐term model showed the best accuracy with R2 ranging between 0.984 and 0.998. The results showed that the drying rate had a decreasing trend by a decrease in moisture content and temperature. The color change in samples (∆E) was observed in the range 15.18–33.61. The study of sample colors indicated at 70 and 80°C, the combined method could result in minor change. Practical applications Due to multiple advantages such as significant durability, ease of transportation and storage, and providing essential nutrients, dried fruits have attracted much attention over the years. This study investigates the Catalytic IR method and the combined CIR and hot air method in the drying process of bananas. According to the results, utilization of the CIR method of drying results in a significant drying time compared to conventional methods such as hot air or solar drying. Moreover, the advantages of the CIR emitters, such as lower fuel consumption and reduced emitted pollutants such as CO and NOx, could be considered a great potential to supersede the conventional drying methods. The outcomes of this study can be used to predict the drying kinetics of bananas and to opt for the best drying conditions to achieve the most desirable color quality.

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“…In this study, the images were captured in

10

RGB

color space to three different images representing each value of the

L^{*} a^{*} b^{*}

color space.…”

Section: Materials and Methodologymentioning

confidence: 99%

Design and fabrication of catalytic infrared fruit dryer to evaluate its performance in the bananas drying process

Hosseinalipour

Zaghari²

2022

Food Processing Preservation

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“…Other studies reported even more discouraging results on the CIELAB performance. Logger et al found a weak correlation between a visually determined erythema score and a* with r s of 0.37 [ 25 ]. Similarly, a* retrieved from RGB images exhibited a limited capability to differentiate between erythema categories in canine skin [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…In general, most studies [ 6 , 19 , 21 , 22 , 23 , 24 ] presented a high correlation between the visual and optical erythema estimations with the correlation coefficients from 0.69 to 0.91. Furthermore, there was a good to excellent agreement between various optical devices with the Pearson’s correlation coefficient ( r p ) of 0.76–0.81 [ 14 ] and the coefficient of determination ( r 2 ) between 0.82 and 0.99 [ 25 , 26 ]. On the other hand, two facial devices for skin analysis (VISIA, Canfield, Parsippany, NJ, USA and CSKIN, source unknown) achieved a poor correlation with visual scores or between themselves ( r p = 0.21–0.49) [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Erythema Severity in Dermatoscopic Images of Canine Skin: Erythema Index Assessment and Image Sampling Reliability

Cugmas

Viškere

Štruc³

et al. 2021

Sensors

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The regular monitoring of erythema, one of the most important skin lesions in atopic (allergic) dogs, is essential for successful anti-allergic therapy. The smartphone-based dermatoscopy enables a convenient way to acquire quality images of erythematous skin. However, the image sampling to evaluate erythema severity is still done manually, introducing result variability. In this study, we investigated the correlation between the most popular erythema indices (EIs) and dermatologists’ erythema perception, and we measured intra- and inter-rater variability of the currently-used manual image-sampling methods (ISMs). We showed that the EIBRG, based on all three RGB (red, green, and blue) channels, performed the best with an average Spearman coefficient of 0.75 and a typical absolute disagreement of less than 14% with the erythema assessed by clinicians. On the other hand, two image-sampling methods, based on either selecting specific pixels or small skin areas, performed similarly well. They achieved high intra- and inter-rater reliability with the intraclass correlation coefficient (ICC) and Krippendorff’s alpha well above 0.90. These results indicated that smartphone-based dermatoscopy could be a convenient and precise way to evaluate skin erythema severity. However, better outlined, or even automated ISMs, are likely to improve the intra- and inter-rater reliability in severe erythematous cases.

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“…In addition, ocular sensitivity to visible light depends on the wavelength and shows intraindividual variation. 12 High-magnification photographs, such as those acquired by a folliscope, can aid clinical examination. However, visual inspection of nail microrelief is still subjective and unreliable and cannot provide quantifiable data.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of nail surface topography using a three‐dimensional in vivo optical skin imaging system

Han

Kim

Kwon

et al. 2021

Skin Research and Technology

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BackgroundThe analysis of nail surface topography is a subject of ever‐increasing interest in dermatology, especially in cosmetic studies. However, there is no accurate and scientifically sound instrumental method that can identify and provide quantitative data on nail surface topography.Materials and MethodsThe right index fingers of 78 healthy individuals were examined. The severity of nail roughness was rated by two independent dermatologists on a scale of 1 to 3. Using the phaseshift rapid in vivo measurement of the skin (PRIMOS) system, three‐dimensional microtopography was performed, and the roughness parameter values were calculated and evaluated. The relationship between clinical nail roughness grade and nail roughness parameter values obtained utilizing PRIMOS was evaluated.ResultsA moderate correlation was found between the roughness parameter values and the clinical roughness grade. Our study showed that an overall relationship exists between the nail roughness parameter values obtained using PRIMOS and clinically observed nail surface changes.ConclusionWith further studies, PRIMOS could be a valuable tool for clinicians and researchers for conducting an accurate and objective patient assessment in daily practice and demonstrating effectiveness of different therapies for nail dystrophy or evaluating cosmetic effects of various topical treatments in future clinical trials.

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Evaluation of a simple image‐based tool to quantify facial erythema in rosacea during treatment

Abstract: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Cited by 13 publications

References 29 publications

Design and fabrication of catalytic infrared fruit dryer to evaluate its performance in the bananas drying process

Design and fabrication of catalytic infrared fruit dryer to evaluate its performance in the bananas drying process

Evaluation of Erythema Severity in Dermatoscopic Images of Canine Skin: Erythema Index Assessment and Image Sampling Reliability

Evaluation of nail surface topography using a three‐dimensional in vivo optical skin imaging system

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