NEW PANNING-VIDEOGRAPHY STRATEGIES FOR THE UNDEWATER MOTION ANALYSIS

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The purpose of this study was to evaluate, through simulation, two new panning-videography strategies based on single continuous control volume (continuous-volume approach) in an effort to overcome the shortcomings of the previously reported method that was based on a set of discrete control volumes (discrete-volume approach). Two continuous-volume strategies were tested: the large-frame strategy and the small-frame strategy. A series of camera calibrations were performed based on a theoretical refraction model and an imaginary experimental setup. Both strategies provided continuous DLT parameter-pan angle curves and demonstrated the potential to provide more reliable calibration results than the discrete-volume approach with less discontinuity in the reconstructed object space and less chance of extrapolation.