文章基本信息

标题：The development of a low-cost photogrammetry-based 3D hand scanner
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作者：Yusheng Yang ; Yusheng Yang ; Jun Xu 等
期刊名称：OpenHardwareX
印刷版ISSN：2468-0672
出版年度：2021
卷号：10
页码：1-17
DOI：10.1016/j.ohx.2021.e00212
语种：English
出版社：Elsevier
摘要：Graphical abstractDisplay OmittedAbstractAcquiring an accurate 3D scan of the human hand is a challenging task, mainly due to the complicated geometry and the instability of the hand. In this paper, we present a low-cost photogrammetry-based scanner that is designed for scanning the human hand. The scanner has fifty modules, each has a Raspberry Pi with an 8-megapixels camera. They are uniformly positioned in two parallel frames and 96% of a hand surface can be viewed by at least 3 cameras. Using the timestamp method, we synchronize the shutters of the 50 cameras within the range of 80 ms to minimize the influence of the instability of the hand. Moreover, the scanner is easy to build with its modular design, and easy to operate with a laptop that is connected to the system by WiFi. Using a 3D printed prosthetic hand, we compared the 3D scanning accuracy of the proposed scanner with the Artec Spider® scanner. The mean absolute error between the two scans is 0.62 ± 0.28 mm. It is concluded that the proposed hand scanner can be used as a low-cost yet accurate tool in many applications, such as personalized product design.
关键词：3D scan;Photogrammetry;Raspberry Pi