M. Balasubramanian, "3D Body Scanning Applied for Human Torso Evaluation", Proc. of 3DBODY.TECH 2023 - 14th Int. Conf. and Exh. on 3D Body Scanning and Processing Technologies, Lugano, Switzerland, 17-18 Oct. 2023, #27, https://doi.org/10.15221/23.27.

Title:

3D Body Scanning Applied for Human Torso Evaluation

Authors:

Mahendran BALASUBRAMANIAN

Texas Tech University, Lubbock TX, USA

Abstract:

Anthropometrically, humans are considered more-or-less bilaterally symmetric. However, several micro and macro factors perturb the symmetric nature of humans and other living organisms. Typically, human asymmetry may be quantified by measuring the individual components on either side of the body, i.e., right versus left arm length. This matched symmetry approach relies on specific landmarks. Though this is a valid method, the matching symmetry approach is not viable for the 3D torso because a torso's right and left sides cannot be separated precisely by a single plane when it comes to the human torso. Researchers have attempted to look for a single plane that volumetrically divides a human body based on the general assumption that the human body is bilaterally symmetric. In reality, the human body is a three-dimensional object that needs to be perfectly symmetric for such a plane to exist. However, the majority of human body shapes exhibit asymmetry of various degrees. Here, a novel non-invasive method is shown for estimating the rate of asymmetry in the 3d human torso using 3D body scanning technology and mathematical methods. The proposed method computes the asymmetry of a human torso by iteratively estimating localized symmetry in small 2D slices of torso scans and combining them to determine the global symmetry/asymmetry. 3D body scans of 30 subjects (15 males and 15 females) were used in this study to develop and evaluate the method. Here, the torso was defined as the upper part of the body from the cervical to the crotch-level, with hands removed at axilla point posterior left and right. The mathematical computations used the MATLAB programming tools. The developed method quantifies the degree of asymmetry on the human torso. The method is suitable for 2D and 3D surfaces and can compute asymmetry from 3D scans and other types of digital models. The technique has potential applications across various fields.

Keywords:

3d body scanning, asymmetry index, torso evaluation

Details/PDF/VIDEO:

Full paper: PDF
Presentation: VIDEO
Proceedings: 3DBODY.TECH 2023, 17-18 Oct. 2023, Lugano, Switzerland
Paper id#: 27
DOI: 10.15221/23.27

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