Comparison of the accuracy of digital stereophotogrammetry and projection moiré profilometry for three-dimensional imaging of the face

Artopoulos, Andreas; Buytaert, Jan A.N.; Dirckx, Joris J.J.; Coward, Trevor

doi:10.1016/j.ijom.2013.10.005

Cited by 31 publications

(25 citation statements)

References 41 publications

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“…Comparing any type of systems becomes more difficult without standardization in experiment designs. The literature presents studies that base analyses on the distance between landmarks 14,34,35 and on angular measurements 34,36,37 , linear distances 2,12,38,39 and maps that highlight morphological differences between surfaces by means of colors [40][41][42] .…”

Section: Discussionmentioning

confidence: 99%

“…Inanimate objects have been used in previous studies, which has the advantage of not skewing results with involuntary movements 11,38,40,43,44 . This is why we also adopted an inanimate model as part of this work: changes in soft tissue from involuntary movements could alter the results in such a manner that these differences could be improperly interpreted as inaccuracies of stereophotogrammetry systems.…”

Section: Discussionmentioning

confidence: 99%

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Accuracy evaluation of tridimensional images performed by portable stereophotogrammetric system

Júnior

Magri

Cazal

et al. 2019

Rev. odontol. UNESP

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Introduction Human facial characteristics vary according to individual dental occlusion, facial harmony, orofacial musculature and the format and configuration of craniofacial structures. Traditionally, anthropometric measurements have been acquired through direct evaluation of subjects in a clinical environment using calipers and metric tapes to measure distances between arches and landmarks. Scientific breakthroughs have enabled the digitization of data and introduced the possibility of quick, precise, radiation-free acquisitions; details can be archived for future analysis and easily shared with patients and colleagues. Among new facial analysis methods, the stereophotogrammetry technique has emerged, which uses a group of cameras to take many photographs of a subject in rapid succession from multiple angles. Nowadays, portable stereophotogrammetric systems are being proposed, as they are more practical and easier to use. Objective The aim of this work was to analyze the accuracy and reproducibility of a portable 3D stereophotogrammetric system (Vectra H1, Canfield, Fairfield, NJ, USA) in measuring soft facial tissues of 30 participants, defining measures of a cube and comparing these measurements with those obtained by a set 3D stereophotogrammetric system (Vectra M3, Canfield, Fairfield, NJ, USA) with previously validated accuracy and reproducibility through quantitative analysis of possible errors. Material and method Thirty temporary landmarks were used to measure (in mm) 34 distances in 30 participants (n = 30). Regarding the cube, 12 angles and 9 linear distances were evaluated. Result The results obtained by the established methodology indicated that the Vectra H1 portable system has shown accuracy and reproducibility equal to that of the Vectra M3 set system. Conclusion Data analysis and correlation to literature findings show Vectra H1's capability to reliably capture tridimensional images, which makes it practical for use in diverse clinical applications.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Accuracy evaluation of tridimensional images performed by portable stereophotogrammetric system

Júnior

Magri

Cazal

et al. 2019

Rev. odontol. UNESP

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“…It is increasingly being reported in the literature that 3D facial scanners can be used in oral clinic, with the 3D facial models acquired by scanners being used for 3D quantitative diagnostic and treatment evaluation [4,5,6,7,8,9,10]. The accuracy of facial scanners in oral and maxillofacial clinical practice is a major focus of current research [11,12,13]. …”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Accuracy of Facial Scan for Facial Deformities in Clinics: A New Evaluation Method for Facial Scanner Accuracy

Zhao¹,

Xiong²,

Wang³

2017

PLoS ONE

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In this study, the practical accuracy (PA) of optical facial scanners for facial deformity patients in oral clinic was evaluated. Ten patients with a variety of facial deformities from oral clinical were included in the study. For each patient, a three-dimensional (3D) face model was acquired, via a high-accuracy industrial “line-laser” scanner (Faro), as the reference model and two test models were obtained, via a “stereophotography” (3dMD) and a “structured light” facial scanner (FaceScan) separately. Registration based on the iterative closest point (ICP) algorithm was executed to overlap the test models to reference models, and “3D error” as a new measurement indicator calculated by reverse engineering software (Geomagic Studio) was used to evaluate the 3D global and partial (upper, middle, and lower parts of face) PA of each facial scanner. The respective 3D accuracy of stereophotography and structured light facial scanners obtained for facial deformities was 0.58±0.11 mm and 0.57±0.07 mm. The 3D accuracy of different facial partitions was inconsistent; the middle face had the best performance. Although the PA of two facial scanners was lower than their nominal accuracy (NA), they all met the requirement for oral clinic use.

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“…A complete digital workflow of facial prosthesis manufacturing (including ears) necessitates three steps: Digitalization (data acquisition) by means of computerized tomography (CT), magnetic resonance imaging (MRI), or surface scanning Virtual modeling of the prosthesis construction (data processing/computer‐aided design [CAD]) in CAD software, using a database with preexisting facial parts, or the mirror‐imaging technique …”

mentioning

confidence: 99%

“…Digitalization (data acquisition) by means of computerized tomography (CT), magnetic resonance imaging (MRI), or surface scanning…”

mentioning

confidence: 99%

Additive Manufacturing: A Comparative Analysis of Dimensional Accuracy and Skin Texture Reproduction of Auricular Prostheses Replicas

Unkovskiy¹,

Spintzyk

Axmann³

et al. 2017

Journal of Prosthodontics

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Comparison of the accuracy of digital stereophotogrammetry and projection moiré profilometry for three-dimensional imaging of the face

Cited by 31 publications

References 41 publications

Accuracy evaluation of tridimensional images performed by portable stereophotogrammetric system

Accuracy evaluation of tridimensional images performed by portable stereophotogrammetric system

Three-Dimensional Accuracy of Facial Scan for Facial Deformities in Clinics: A New Evaluation Method for Facial Scanner Accuracy

Additive Manufacturing: A Comparative Analysis of Dimensional Accuracy and Skin Texture Reproduction of Auricular Prostheses Replicas

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