Accuracy and reliability of a low-cost methodology to assess 3D body posture based on commercial cameras and Excel templates
| Autor: | José M. Chicano-Gutiérrez, Gabriel Delgado-García, Víctor M. Soto-Hermoso, Jos Vanrenterghem, Laura Rodríguez Gallego, Clarisa Mildenberger |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
Bioinformatics Computer science Image Processing Population DLT Engineering Multidisciplinary 02 engineering and technology 01 natural sciences Motion capture VALIDATION Engineering Software 0202 electrical engineering electronic engineering information engineering Calibration RECONSTRUCTION Videography Electrical and Electronic Engineering Bland–Altman plot education Instruments & Instrumentation Instrumentation Reliability (statistics) Simulation education.field_of_study Science & Technology Observational error Anthropometry CALIBRATION PROCEDURE business.industry Applied Mathematics 020208 electrical & electronic engineering 010401 analytical chemistry Condensed Matter Physics 0104 chemical sciences Stereophotogrammetry Concordance correlation coefficient business |
| Zdroj: | Measurement. 173:108638 |
| ISSN: | 0263-2241 |
| DOI: | 10.1016/j.measurement.2020.108638 |
| Popis: | Analysing posture in 3D generally requires expensive equipment and complex software, not accessible to most healthcare centres. The aim was to evaluate a 3D postural analysis methodology based on commercial cameras, a portable calibration device and Excel, a popular spreadsheet software. The accuracy and reliability of the methodology were studied using a 3D optical motion capture system with submillimetre accuracy as reference. 99 length and 99 angular anthropometrics parameters of 9 subjects were measured and Lin’s concordance correlation coefficient (Lin’s CCC), magnitudes of errors and Bland Altman graphs were computed. The measurement errors were of approximately 2 mm and of 1–2 deg, and the methodology was reliable (Lin’s CCCs above 0.99). The suggested low-cost methodology could be used for applied 3D postural studies, analysing asymmetries, postural alterations or population-based anthropometric parameters, where usually submillimetre accuracy is not required and therefore can be useful for medical centres with a limited budget. |
| Databáze: | OpenAIRE |
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