Experimental Investigation of the Fit of Face Masks During Speaking Using 3D and 4D Scanning - 25.39
Title:
Experimental Investigation of the Fit of Face Masks During Speaking Using 3D and 4D Scanning
Authors:
Niklas SCHMIDT, Felix KUNZELMANN, Ingrid PERAZA, Ann-Malin SCHMIDT, Yordan KYOSEV
Dresden University of Technology, Dresden, Germany
Full paper:
The paper has been reviewed and the authors are currently updating it. The full paper will be available shortly as PDF file.
Keywords:
3D Scanning, 4D-Body Scanning, Face Masks, Dynamic Mask Fit, Mask Leakage, Mask Shifting, Facial Geometries
Abstract:
Face masks were intensively investigated during the COVID-19 pandemic, but several engineering aspects of their design still remain open. In real world conditions, humans wear masks while speaking or even shouting, which is connected to a larger opening of the mouth. During the motion of the mouth, the position of the jaw changes and therefore the geometry of the lower face. Thus, variations in face shape while speaking should be considered in the evaluation of mask fit.
The objective of this investigation is to evaluate two different scanning methods in terms of analyzing two mask fit indicators, leakage and mask shifting, under dynamic conditions. First, the face of a test person is scanned without and with a mask in two static positions (mouth closed and mouth maximally open) using a 3D scanner. Then, the same test subject is scanned without and with a mask while continuously opening and closing their mouth using the high-speed (4D) MOVE4D scanning system.
The findings of the investigation can be used to decide which scanning method is best suited for which type of mask fit evaluation. Furthermore, more elaborate scanning procedures and analyses for mask fit evaluations using 3D and 4D scanning can be developed based on the presented approaches.
DOI:
https://doi.org/10.15221/25.39
How to Cite (MLA):
Schmidt, Niklas, et al., "Experimental Investigation of the Fit of Face Masks During Speaking Using 3D and 4D Scanning", 3DBODY.TECH Journal, vol. 2, Dec. 2025, #39, https://doi.org/10.15221/25.39
Presentation:
Video availble in 3DBODY.TECH 2025 Proceedings - 25.39
Details:
Volume/Issue: 3DBODY.TECH Journal - Vol. 2, 2025
Paper: #39
Published: 2025/12/31
Presented at: 3DBODY.TECH 2025, 21-22 Oct. 2025, Lugano, Switzerland
Proceedings: 3DBODY.TECH 2025 Proceedings
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