Subframe Temporal Alignment of Non-Stationary Cameras
Benjamin J. Meyer, Timo Stich, Marc Pollefeys · 2008
This paper studies the problem of estimating the sub-frame temporal off-set between unsychronized, non-stationary cameras. Based on motion trajec-tory correspondences, the estimation is done in two steps. First, we propose an algorithm to robustly estimate the frame accurate offset by analyzing the trajectories and matching their characteristic time patterns. Using this result, we then show how the estimation of the fundamental matrix between two cameras can be reformulated to yield the sub-frame accurate offset from nine correspondences. We verify the robustness and performance of our approach on synthetic data as well as on real video sequences. 1