Kinematic measurement from panned cinematography
Gervais, P.; Bedingfield, E.W.; Wronko, C.; Kollias, I.; Marchiori, G.; Kuntz, J.; Way, N.; Kuiper, D.
Canadian Journal of Sport Sciences 14(2): 107-111
1989
ISSN/ISBN: 0833-1235 PMID: 2736439 Document Number: 332921
Traditional 2-D cinematography has used a stationary camera with its optical axis perpendicular to the plane of motion. This method has constrained the size of the object plane or has introduced potential errors from a small subject image size with large object field widths. The purpose of this study was to assess a panning technique that could overcome the inherent limitations of small object field widths, small object image sizes and limited movement samples. The proposed technique used a series of reference targets in the object field that provided the necessary scales and origin translations. A 102 m object field was panned. Comparisons between criterion distances and film measured distances for field widths of 46 m and 22 m resulted in absolute mean differences that were comparable to that of the traditional method.