title: Child body shape measurement using depth cameras and a statistical body shape model.
abstract: We present a new method for rapidly measuring child body shapes from noisy, incomplete data captured from low-cost depth cameras. This method fits the data using a statistical body shape model (SBSM) to find a complete avatar in the realistic body shape space. The method also predicts a set of standard anthropometric data for a specific subject without measuring dimensions directly from the fitted model. Since the SBSM was developed using principal component (PC) analysis, we formulate an optimisation problem to fit the model in which the degrees of freedom are defined in PC-score space. The mean unsigned distance between the fitted-model based on depth-camera data and the high-resolution laser scan data was 9.4 mm with a standard deviation (SD) of 5.1 mm. For the torso, the mean distance was 2.9 mm (SD 1.4 mm). The correlations between standard anthropometric dimensions predicted by the SBSM and manually measured dimensions exceeded 0.9.
authors.affiliation: a Biosciences Group , University of Michigan Transportation Research Institute , Ann Arbor , MI , USA.
authors.forename: Byoung-Keon
authors.initials: BK
authors.lastname: Park
authors.forename: Julie C
authors.initials: JC
authors.lastname: Lumeng
authors.forename: Carey N
authors.initials: CN
authors.lastname: Lumeng
authors.forename: Sheila M
authors.initials: SM
authors.lastname: Ebert
authors.forename: Matthew P
authors.initials: MP
authors.lastname: Reed
mesh_terms: D000886:Anthropometry / Q000295:instrumentation* / Q000379:methods; D049628:Body Size; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000295:instrumentation* / Q000379:methods; D007834:Lasers; D008297:Male; D015233:Models, Statistical; D010781:Photography / Q000295:instrumentation* / Q000379:methods; D025341:Principal Component Analysis
keywords: anthropometry; child body shape measurement; depth camera; statistical body shape model; surface fitting