title: The ray projection method: a numerical approach for determining ideal camera placement.
abstract: Data piloting is important to ensure accurate marker coordinate data and to minimize camera dropout. Camera dropout results when a camera fails to image a marker, which often occurs when markers merge or become occluded. In this article, we present the conceptual framework for a numerical method of determining where video cameras, if placed, would have an occluded or a merged view of the tracking markers. Experimental data are presented to demonstrate the efficacy of the method as a tool to complement existing data piloting procedures.
authors.affiliation: Center for Biomedical Engineering Research, University of Delaware, Newark, DE 19716, USA.
authors.forename: Kurt
authors.initials: K
authors.lastname: Manal
authors.forename: Joseph
authors.initials: J
authors.lastname: Gardinier
mesh_terms: D000465:Algorithms; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D009068:Movement / Q000502:physiology*; D009716:Numerical Analysis, Computer-Assisted; D010781:Photography / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014741:Video Recording / Q000295:instrumentation / Q000379:methods*