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Updated: May 25, 2026
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Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
Published on: June 7, 2024
A protocol for evaluating the accuracy of 3D body scanners
Makiko Kouchi1, Masaaki Mochimaru, Bruce Bradtmiller
1Digital Human Research Center, National Institute of Advanced Industrial Science and Technology, 2-3-26 Aomi, Koto-ku, Tokyo 135-0064, Japan. m-kouchi@aist.go.jp
Work (Reading, Mass.)
|February 10, 2012
Summary
This study introduces a new protocol for assessing 3D body scanner accuracy using calibrated artifacts and anthropomorphic dummies. The proposed method effectively evaluates surface shape accuracy and landmark location repeatability across various scanners.
Area of Science:
- Biomedical Engineering
- Metrology
- 3D Imaging Technology
Background:
- 3D body scanners are increasingly used for measurements, but lack standardized accuracy evaluation protocols.
- Existing methods for assessing scan-derived landmark locations and surface shapes are not universally accepted.
- Accurate and repeatable measurements are crucial for applications relying on 3D body scan data.
Purpose of the Study:
- To propose and validate a standardized protocol for evaluating the accuracy and repeatability of 3D body scanners.
- To establish reliable methods for assessing surface shape accuracy and landmark location precision.
- To provide a framework for inter-laboratory comparisons and quality assurance in 3D body scanning.
Main Methods:
- Development of a protocol using a calibrated artifact (sphere) for scanner system accuracy and an anthropomorphic dummy for landmark repeatability.
- Application of the protocol to 17 different 3D body/head/foot scanners across six research institutes.
- Calculation of evaluation parameters including trueness, precision, and repeatability from measured data.
Main Results:
- The proposed test objects were measurable and data exportable by most tested 3D body scanner systems (16 out of 17).
- The protocol demonstrated availability across different types of body scanners (body, head, foot).
- A comparative figure of the measured surface proved useful for data analysis.
Conclusions:
- The proposed protocol is a viable and available method for evaluating 3D body scanner accuracy and landmark repeatability.
- Standardized testing objects and parameters facilitate reliable inter-laboratory comparisons.
- The findings support the adoption of this protocol for quality control in 3D body scanning applications.
