Modabber Ali, Peters Florian, Kniha Kristian, Goloborodko Evgeny, Ghassemi Alireza, Lethaus Bernd, Hölzle Frank, Möhlhenrich Stephan Christian
Department of Oral, Maxillofacial and Plastic Facial Surgery, School of Medicine, University Hospital RWTH Aachen, Aachen, Germany.
Department of Oral, Maxillofacial and Plastic Facial Surgery, School of Medicine, University Hospital RWTH Aachen, Aachen, Germany.
J Craniomaxillofac Surg. 2016 Oct;44(10):1719-1724. doi: 10.1016/j.jcms.2016.08.008. Epub 2016 Aug 18.
Numerous three-dimensional (3D) facial scanners have emerged on the market; however, publications evaluating their accuracies are sparse. In this study, the accuracy of two 3D scanners used in facial scanning was evaluated.
A test specimen was attached at the right cheek and the forehead of 41 volunteers. These volunteers were scanned with Artec EVA and FaceScan3D. The acquired data were aligned to a 3D model of the test specimen for comparing the mean error, original length and width and angles to the measured values.
The mean error in Best Fit alignment is significantly lower using Artec EVA (p < 0.001) for both test specimens. The deviation from the original length and width is significantly lower for the test specimens (p < 0.01) when measured with Artec EVA. The aberration of the angles measured between the front plane and the side plane is significantly lower when measured with Artec EVA (p < 0.001). Captured with Artec EVA the discrepancy between the original angle and the angle measured between the side planes to each other is significantly lower (p < 0.01).
Scanning with Artec EVA leads to more accurate 3D models as compared to scanning with FaceScan3D. The exactness achieved by both scanners is comparable to other scanners mentioned in literature.
市场上已出现众多三维（3D）面部扫描仪；然而，评估其准确性的出版物却很稀少。在本研究中，对用于面部扫描的两种3D扫描仪的准确性进行了评估。
在41名志愿者的右脸颊和前额处粘贴一个测试样本。使用Artec EVA和FaceScan3D对这些志愿者进行扫描。将采集到的数据与测试样本的3D模型对齐，以比较平均误差、原始长度、宽度以及与测量值的角度。
对于两个测试样本，使用Artec EVA进行最佳拟合对齐时的平均误差显著更低（p < 0.001）。用Artec EVA测量时，测试样本的原始长度和宽度偏差显著更低（p < 0.01）。用Artec EVA测量时，前平面与侧平面之间测量角度的偏差显著更低（p < 0.001）。用Artec EVA采集时，原始角度与侧平面之间相互测量角度的差异显著更低（p < 0.01）。
与使用FaceScan3D扫描相比，使用Artec EVA扫描可生成更准确的3D模型。这两种扫描仪所达到的精确程度与文献中提到的其他扫描仪相当。
