Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis
<h4>Background</h4> 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 (WB...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2022-01-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9423681/?tool=EBI |
| _version_ | 1798032519534215168 |
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| author | Farah 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 |
| author_facet | Farah 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 |
| author_sort | Farah Rashid |
| collection | DOAJ |
| description | <h4>Background</h4> 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. <h4>Methods</h4> 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. <h4>Results</h4> 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. <h4>Conclusion</h4> 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. |
| first_indexed | 2024-04-11T20:15:19Z |
| format | Article |
| id | doaj.art-ea0c0a1e3b4049c49365b10b6105a0cc |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-11T20:15:19Z |
| publishDate | 2022-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-ea0c0a1e3b4049c49365b10b6105a0cc2022-12-22T04:05:00ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01178Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysisFarah RashidNafij Bin JamayetTaseef Hasan FarookMatheel AL-RawasAparna BarmanYanti JohariTahir Yusuf NooraniJohari Yap AbdullahSumaiya Zabin EusufzaiMohammad Khursheed Alam<h4>Background</h4> 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. <h4>Methods</h4> 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. <h4>Results</h4> 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. <h4>Conclusion</h4> 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.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9423681/?tool=EBI |
| spellingShingle | Farah 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 Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis PLoS ONE |
| title | Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis |
| title_full | Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis |
| title_fullStr | Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis |
| title_full_unstemmed | Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis |
| title_short | Color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics: An in vitro analysis |
| title_sort | color variations during digital imaging of facial prostheses subjected to unfiltered ambient light and image calibration techniques within dental clinics an in vitro analysis |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9423681/?tool=EBI |
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