Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis

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dc.contributor.authorRashid, F.
dc.contributor.authorJamayet, N.B.
dc.contributor.authorFarook, T.H.
dc.contributor.authorAl-Rawas, M.
dc.contributor.authorBarman, A.
dc.contributor.authorJohari, Y.
dc.contributor.authorNoorani, T.Y.
dc.contributor.authorAbdullah, J.Y.
dc.contributor.authorEusufzai, S.Z.
dc.contributor.authorAlam, M.K.
dc.contributor.editorKielbassa, A.M.
dc.date.issued2022
dc.description.abstractBackground The study aimed to evaluate 1) the amount of color variations presents within clinical images of maxillofacial prosthetic silicone specimens when photographed under different clinically relevant ambient lighting conditions, and 2) whether white balance calibration (WBC) methods were able to mitigate variations in ambient lighting. Methods 432 measurements were acquired from standardized images of the pigmented prosthetic silicone specimens within different ambient lighting conditions (i.e., 2 windowed and 2 windowless clinics) at noon with no light modifying apparatus. The specimens were photographed once without any white balance calibration (raw), then independently alongside an 18% neutral gray card and Macbeth color chart for calibration in a post-processing (PPWBC) software, and once after camera calibration (CWBC) using a gray card. The LAB color values were extracted from the images and color variations (ΔE) were calculated after referring to the corresponding spectrophotometric values as control. Results Images in windowless and windowed clinics exhibited highly significant differences (p < 0.001) with spectrophotometer (control). CWBC demonstrated no significant differences (p > 0.05) in LAB values across windowed clinics. PPWBC using Macbeth color chart produced no significant differences for a* values (p > 0.05) across all clinics while PPWBC by gray card showed no significant differences (p > 0.05) in LAB values when only similar clinics (either windowed or windowless) were compared. Conclusion Significant color variations were present for maxillofacial prosthetic specimens owing to natural ambient light. CWBC and PPWBC using color charts were more suitable for color correction across windowed clinics while CWBC and PPWBC using gray cards had better outcomes across windowless setups.
dc.description.statementofresponsibilityFarah Rashid, Nafij Bin Jamayet, Taseef Hasan Farook, Matheel AL-Rawas, Aparna Barman, Yanti Johari, Tahir Yusuf Noorani, Johari Yap Abdullah, Sumaiya Zabin Eusufzai, Mohammad Khursheed Alam
dc.identifier.citationPLoS ONE, 2022; 17(8):e0273029-1-e0273029-17
dc.identifier.doi10.1371/journal.pone.0273029
dc.identifier.issn1932-6203
dc.identifier.issn1932-6203
dc.identifier.orcidRashid, F. [0000-0002-2017-2454]
dc.identifier.orcidFarook, T.H. [0000-0001-5905-1572]
dc.identifier.urihttps://hdl.handle.net/2440/145957
dc.language.isoen
dc.publisherPublic Library of Science (PLoS)
dc.rights© 2022 Rashid et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.source.urihttps://doi.org/10.1371/journal.pone.0273029
dc.subjectSpectrophotometers; Light; Silicones; Prosthetics; Charts; Cameras; Imaging techniques; Measurement
dc.subject.meshSilicones
dc.subject.meshCalibration
dc.subject.meshProstheses and Implants
dc.subject.meshColor
dc.subject.meshDental Clinics
dc.titleColor variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis
dc.typeJournal article
pubs.publication-statusPublished

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