Manufacturing Technology 2023, 23(2):260-267 | DOI: 10.21062/mft.2023.019

Smartphone-based Data Acquisition Method for Modelling 3D Printed Arm Casts

Tuong Nguyen Van ORCID...1, Truong Le Thanh ORCID...1, Trong Nguyen Van ORCID...1, Natasa Naprstkova ORCID...2
1 Faculty of Mechanical Engineering, Nha Trang University. 02 Nguyen Dinh Chieu, Nha Trang, Vietnam
2 Faculty of Mechanical Engineering, University of Jan Evangelista in Ústí nad Labem. Pasteurova 3334/7, 400 01 Usti nad Labem. Czech Republic

In recent years, 3D printed arm casts can replace traditional arm casts to treat bones fractures. 3D printed arm cast modelling often uses professional 3D scanning systems to capture 3D data of the arm. These systems are very expensive and may not be available in many hospitals. In order to over-come this disadvantage, inexpensive methods should be developed. This paper introduces a new data collection method based on smartphones. The photos of an arm were taken with a smartphone cam-era using some special techniques that could facilitate the process of image processing and 3D mod-elling in Agisoft Metashape and CATIA. To validate the proposed method, the photogrammetric model was compared with the scanned model (obtained by a low cost scanner) in GOM Inspect. Be-sides, a fit check of real 3D printed arm casts attached on the volunteer's forearm was also per-formed. The test results indicate that the photogrammetric model could be used as raw data for 3D arm modelling.

Keywords: Photogrammetry, 3D printed, Arm cast, Smartphone, Data acquisition
Grants and funding:

The work of this paper is supported by Nha Trang University under project No. TR2021-13-19

Received: November 10, 2022; Revised: April 4, 2023; Accepted: April 13, 2023; Prepublished online: April 25, 2023; Published: May 4, 2023  Show citation

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Van TN, Le Thanh T, Van TN, Naprstkova N. Smartphone-based Data Acquisition Method for Modelling 3D Printed Arm Casts. Manufacturing Technology. 2023;23(2):260-267. doi: 10.21062/mft.2023.019.
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