Print Email Facebook Twitter Posture-invariant three dimensional human hand statistical shape model Title Posture-invariant three dimensional human hand statistical shape model Author Yang, Y. (TU Delft Mechatronic Design; Shanghai University) Yuan, T. (TU Delft Mechatronic Design) Huysmans, T. (TU Delft Applied Ergonomics and Design) Elkhuizen, W.S. (TU Delft Mechatronic Design) Tajdari, F. (TU Delft Mechatronic Design) Song, Y. (TU Delft Mechatronic Design) Date 2020 Abstract A high-fidelity digital representation of (part of) the human body is a key enabler for integrating humans in a digital twin. Among different parts of human body, building the model of the hand can be a challenging task due to the posture deviations among collected scans. In this article, we proposed a posture invariant statistical shape model (SSM) of the human hand based on 59 3D scans of human hands. First, the 3D scans were spatially aligned using a Möbius sphere-based algorithm. An articulated skeleton, which contains 20 bone segments and 16 joints, was embedded for each 3D scan. Then, all scans were aligned to the same posture using the skeleton and the linear blend skinning (LBS) algorithm. Three methods, i.e., principal component analysis (PCA), kernel-PCA (KPCA) with different kernel functions, and independent component analysis (ICA), were evaluated in the construction of the SSMs regarding the compactness, the generalization ability, and the specificity. The PCA-based SSM was selected, where 20 principal components were used as parameters for the model. Results of the leave-one-out validation indicate that the proposed model was able to fit a given 3D scan of the human hand at an accuracy of 1.21 ± 0.14 mm. Experiment results also indicated that the proposed SSM outperforms the SSM that was built on the scans without posture correction. It is concluded that the proposed posture correction approach can effectively improve the accuracy of the hand SSM and therefore enables its wide usage in human-integrated digital twin applications. To reference this document use: http://resolver.tudelft.nl/uuid:964e126f-3ffc-497c-b436-6601967c5229 DOI https://doi.org/10.1115/1.4049445 ISSN 1530-9827 Source Journal of Computing and Information Science in Engineering, 21 (3) Bibliographical note nog geen uitgeversversie beschikbaar Part of collection Institutional Repository Document type journal article Rights © 2020 Y. Yang, T. Yuan, T. Huysmans, W.S. Elkhuizen, F. Tajdari, Y. Song Files PDF Posture_invariant_3D_Huma ... _Model.pdf 1.74 MB Close viewer /islandora/object/uuid:964e126f-3ffc-497c-b436-6601967c5229/datastream/OBJ/view