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Accuracy of photogrammetric extraction of the head and torso shape for personal acoustic HRTF modeling

Photogrammetric computational methods can acquire precise personal head, external ear, and upper torso shapes using video captured with a mobile phone. We analyze the accuracy and repeatability of generating such 3D ge-ometry information. A known head and torso simulator (Kemar) as well as a 3D printed plastic head-and-torso dummy of a real person are considered. The resulting 3D geometry data is compared to the manufacturer’s or the actual 3D geometry. Shape differences between geometries are analyzed. The computer-modeled head-related transfer functions implied by the geometries are compared. The impacts of differences in geometries are dis-cussed. Photogrammetric determination of the 3D head-and-torso geometry can have sufficient accuracy to allow the computation of realistic personal head-related transfer function.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=20740

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