Assessing the Accuracy of Vision-Based Accelerometry

Video-based motion measurement enables convenient tracking of multiple points in a plane with a single sensor: a CCD video camera. This paper presents a method to easily assess the accuracy of accelerations computed from the tracking of positions measured via video and quantifies these errors for a consumer-grade camera. A signal with time-dependent frequency and amplitude is applied to a shake table, and the motion of LED targets are tracked. The tracked target positions are filtered and twice-differentiated to compute accelerations. These vision-based acceleration measurements are time-synchronized with conventional accelerometer measurements. The vision-based and conventional acceleration measurements are directly compared, and through a series of experiments, an extensive investigation of the acceleration measurement sensitivity to signal frequency and amplitude is carried out. © 2013 Society for Experimental Mechanics.

Full Text

Duke Authors

Cited Authors

  • Scott Harvey Jr, P; Gavin, HP

Published Date

  • February 2014

Published In

Volume / Issue

  • 54 / 2

Start / End Page

  • 273 - 277

Electronic International Standard Serial Number (EISSN)

  • 1741-2765

International Standard Serial Number (ISSN)

  • 0014-4851

Digital Object Identifier (DOI)

  • 10.1007/s11340-013-9783-9

Language

  • eng

Citation Source

  • Scopus