Use of stereophotogrammetry for measuring the volume of external facial anatomy: a
            systematic review

Miranda, Ricardo; Matayoshi, Suzana; Brabo, Janaina Lucila; Miyoshi, Letícia Harumi

doi:10.5935/2177-1235.2018rbcp0180

Cited by 4 publications

(3 citation statements)

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“…Threedimensional stereophotogrammetry (3D-SPM) is an imaging system based on AT. This method provides information on a surface by crossing data obtained from a pair of slightly different stereoscopic two-dimensional pictures from two different angles [30,35]. The images are processed by the mathematical algorithms embedded in a software performing a spatial analysis based on the intersection of ray bundles derived from both photographs.…”

Section: Scale For Assessing Wrinkles and Scars After Laser Treatmentmentioning

confidence: 99%

Scientific Validation of Three-Dimensional Stereophotogrammetry Compared to the IGAIS Clinical Scale for Assessing Wrinkles and Scars after Laser Treatment

Machado

SIlva

Pautrat

et al. 2021

Preprint

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Background: Measuring outcomes from treatments to the skin is either reliant upon patient’s subjective feedback or scale-based peer assessments. Three-Dimensional stereophotogrammetry intend to accurately quantify skin microtopography before and after treatments. Objective: To compare the accuracy of stereophotogrammetry and a scale-based peer evaluation in assessing topographical changes to skin surface following laser treatment. Methods: A 3D stereophotogrammetry system photographed skin surface of 48 patients with facial wrinkles or scars before and three months after laser resurfacing, followed immediately by topical application of vitamin C. The software measured changes in skin roughness, wrinkle depth and scar volume. Images were presented to three observers, each independently scoring cutaneous improvement according to Investigator Global Aesthetic Improvement Scale (IGAIS) Scale. Results: A trend reflecting skin/scar improvement was reported by 3D-SPM measurements and raters. The percentage of topographical change given by the raters matched 3D SPM findings. Agreement was highest when observers analyzed 3D images. However, observers overestimated skin improvement in a nontreatment control whilst 3D-SPM was precise in detecting absence of intervention. Conclusion: This study confirmed a direct correlation between the IGAIS clinical scale and 3D-SPM and confirmed the efficacy and accuracy of the latter when assessing cutaneous microtopography alterations as a response to laser treatment.

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Section: Scale For Assessing Wrinkles and Scars After Laser Treatmentmentioning

confidence: 99%

Scientific Validation of Three-Dimensional Stereophotogrammetry Compared to the IGAIS Clinical Scale for Assessing Wrinkles and Scars after Laser Treatment

Machado

SIlva

Pautrat

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Three-dimensional stereophotogrammetry (3D SPM) is an imaging system based on AT. This method provides information on a surface by crossing data obtained from a pair of slightly different stereoscopic two-dimensional pictures from two different angles 30 , 35 . The images are processed by the mathematical algorithms embedded in a software performing a spatial analysis based on the intersection of ray bundles derived from both photographs.…”

Section: Introductionmentioning

confidence: 99%

Scientific validation of three-dimensional stereophotogrammetry compared to the IGAIS clinical scale for assessing wrinkles and scars after laser treatment

Machado

Silva

Pautrat

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Measuring outcomes from treatments to the skin is either reliant upon patient’s subjective feedback or scale-based peer assessments. Three-Dimensional stereophotogrammetry intend to accurately quantify skin microtopography before and after treatments. The objective of this study is comparing the accuracy of stereophotogrammetry with a scale-based peer evaluation in assessing topographical changes to skin surface following laser treatment. A 3D stereophotogrammetry system photographed skin surface of 48 patients with facial wrinkles or scars before and three months after laser resurfacing, followed immediately by topical application of vitamin C. The software measured changes in skin roughness, wrinkle depth and scar volume. Images were presented to three observers, each independently scoring cutaneous improvement according to Investigator Global Aesthetic Improvement Scale (IGAIS). As for the results, a trend reflecting skin/scar improvement was reported by 3D SPM measurements and raters. The percentage of topographical change given by the raters matched 3D SPM findings. Agreement was highest when observers analysed 3D images. However, observers overestimated skin improvement in a nontreatment control whilst 3D SPM was precise in detecting absence of intervention. This study confirmed a direct correlation between the IGAIS clinical scale and 3D SPM and confirmed the efficacy and accuracy of the latter when assessing cutaneous microtopography alterations as a response to laser treatment.

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“…the difficulty in analyzing depth and volume [3]. For this reason, three-dimensional (3D) stereophotogrammetry technique is the most used in clinical situations, as it does not have contact with soft tissue and has less distortion.…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Family Function and its Related Factors in First-Child Infertile Women and Second-Child Infertile Women after 'Two-Child' Policy in China

da¹,

Rodrigues²,

da³

et al. 2021

Int J Oral Dent Health

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Introduction: Facial analysis of soft tissue using 3D stereophotogrammetry can contribute to the process of facial identification through the smile.Aim: To compare measures of linear, angular and area variables in three-dimensional images of the lip's soft tissues between gender and age, to contribute to the process of human face identification based on smile images. Methods:The total sample consisted of 120 Brazilian subjects, 60 men and 60 women, divided into three different age groups: 18 to 35 years; 36 to 50-years-old and 50 to 70-years-old (20 male volunteers and 20 women in each age group, male and female). 32 points were marked on the face, after that 3D images were taken (Vectra® H1, Canfield Scientific, Parsippany, NJ, USA) and linear, angular and area measures of the lip's soft tissue were analyzed (ANOVA, p < 0.05 as significance).Results: Age showed more expressive differences when compared to variables between genders. This can be analyzed since the variables of the upper and lower lip vermilion area, mentolabial angle, upper lip vermilion height and lower lip vermilion height presented the values of p = 0.01, respectively; 0.02; 0.04; 0.0001; 0.002; while in relation to gender, only the nasolabial angle variable had a p-value of 0.03. Conclusion:In conclusion, the variations that can be observed through three-dimensional images in soft tissue of the lips are only significant when comparing different age groups. Several analysis techniques for human identification based on smile images have been studied and developed, and these results indicate that perioral soft tissue variations can be a comparison variable focused only on age estimation and should not be considered in the estimation of gender.

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Use of stereophotogrammetry for measuring the volume of external facial anatomy: a systematic review

Cited by 4 publications

References 0 publications

Scientific Validation of Three-Dimensional Stereophotogrammetry Compared to the IGAIS Clinical Scale for Assessing Wrinkles and Scars after Laser Treatment

Scientific Validation of Three-Dimensional Stereophotogrammetry Compared to the IGAIS Clinical Scale for Assessing Wrinkles and Scars after Laser Treatment

Scientific validation of three-dimensional stereophotogrammetry compared to the IGAIS clinical scale for assessing wrinkles and scars after laser treatment

The Comparison of Family Function and its Related Factors in First-Child Infertile Women and Second-Child Infertile Women after 'Two-Child' Policy in China

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